tag:blogger.com,1999:blog-12244385923181422202024-03-16T14:52:20.307-04:00Chinese Military RadioI have been always inspired by military radio items since very early childhood. I made several telegraph keys around 10. However, I never touched any military radio until 2006 and it started my military radio collection hobby. My main focus is on Chinese military field portable transceivers used by PLA. Follow me if you are interested to know some Chinese military radio hardwares.
<br> All Rights Reserved © 2007 - 2022Unknownnoreply@blogger.comBlogger39125tag:blogger.com,1999:blog-1224438592318142220.post-71048927998726810462022-03-04T09:32:00.003-05:002022-03-04T09:34:51.177-05:00<p style="text-align: center;"> I miss my hometown!</p><p style="text-align: center;">(I can see where I grew up in this video)</p><div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen="" class="BLOG_video_class" height="266" src="https://www.youtube.com/embed/7keLrzMcZRc" width="320" youtube-src-id="7keLrzMcZRc"></iframe></div><br /><p><br /></p>Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-1224438592318142220.post-82400999251260047402021-03-07T21:22:00.006-05:002021-03-07T21:22:53.671-05:00<p style="text-align: center;">My Hometown</p><div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen="" class="BLOG_video_class" height="266" src="https://www.youtube.com/embed/O-yXrbxXBX8" width="320" youtube-src-id="O-yXrbxXBX8"></iframe></div><br /><p><br /></p>Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-1224438592318142220.post-78395525725050449142021-02-25T12:37:00.000-05:002021-02-25T12:37:00.978-05:00<p><span style="text-align: center;"><br /></span></p><p><span style="text-align: center;"> </span><span style="text-align: center;"> </span><span style="text-align: center;"> </span><span style="text-align: center;"> </span><span style="text-align: center;"> </span><span style="text-align: center;"> </span><span style="text-align: center;"> </span><span style="text-align: center;"> </span><span style="text-align: center;"> </span><span style="text-align: center;"> </span><span style="text-align: center;"> </span><span style="text-align: center;"> </span><span style="text-align: center;"> </span></p><p style="text-align: center;">BRAVO</p><p style="text-align: center;">I went to college there.</p><p><br /></p><div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen="" class="BLOG_video_class" height="268" src="https://www.youtube.com/embed/ejzPbOcuGjI" width="322" youtube-src-id="ejzPbOcuGjI"></iframe></div><p></p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-1224438592318142220.post-82734704660728909612021-02-22T15:04:00.009-05:002021-02-23T09:09:44.606-05:00<p style="text-align: center;"> HERO</p><p style="text-align: center;">岁月静好,山河无恙,只因有你!</p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvXji4wwhqC1Yf_WRsjftjqD-aj03ZlHIkvIBcsGvZi8vnRtrig0XjCj_DbQT1JKqNmZgQrdKXPUnLLZVjdJuFRGJnnz5Ky8ehOqWpW3c39Vio7QUPAaGJdIqBH1NJtydZrXoxuRiZmMA/s866/IMG_3199.PNG" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="866" data-original-width="640" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvXji4wwhqC1Yf_WRsjftjqD-aj03ZlHIkvIBcsGvZi8vnRtrig0XjCj_DbQT1JKqNmZgQrdKXPUnLLZVjdJuFRGJnnz5Ky8ehOqWpW3c39Vio7QUPAaGJdIqBH1NJtydZrXoxuRiZmMA/w295-h400/IMG_3199.PNG" width="295" /></a></div><br /><p><br /></p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-1224438592318142220.post-71718100790760243082019-09-26T20:59:00.002-04:002019-09-26T21:11:32.960-04:005 Watts Border Patrol Shortwave SSB radio<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhLE-OsL2BIq2Gjc7H66Yl14CFzQD1HO7Y2wGMCj9b3D3_AOAlqcE41tKijncYKKn_E2p4fiaQWyOzUSVcaTyAvUGvQq-C4R0fEgZ3jKYUQE-35Br2-yZGCkiMBhjZTgCAoImfq1zPvyH0/s1600/5w-0.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1075" data-original-width="1600" height="268" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhLE-OsL2BIq2Gjc7H66Yl14CFzQD1HO7Y2wGMCj9b3D3_AOAlqcE41tKijncYKKn_E2p4fiaQWyOzUSVcaTyAvUGvQq-C4R0fEgZ3jKYUQE-35Br2-yZGCkiMBhjZTgCAoImfq1zPvyH0/s400/5w-0.jpg" width="400" /></a></div>
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5 Watts Border Patrol Shortwave SSB radio Was developed by
Hainan BaoTong Corporate around 2000. It is to provide a lightweight
easy-to-operate radio for border patrol troops. The system consists of a radio
body, a battery box, a 2.4 meter antenna, a 15 meter wire antenna, a headset
and/or handset, a moss code key, a carrying backpack and a battery charge
station. <o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhdgr5mAHBZGjD6xa203j5-yBp-VWVQUsMVH__UvUc9NMrVgQP_qBJsSAln9CpYweYmtCfTnFkTAwoiWJt1yOPDWDsguL-oemg1bRA7M2EQt2qc0iw6h-RN2Glcyl_zwZ1wVU8aoa_8w5c/s1600/5w-1.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhdgr5mAHBZGjD6xa203j5-yBp-VWVQUsMVH__UvUc9NMrVgQP_qBJsSAln9CpYweYmtCfTnFkTAwoiWJt1yOPDWDsguL-oemg1bRA7M2EQt2qc0iw6h-RN2Glcyl_zwZ1wVU8aoa_8w5c/s400/5w-1.JPG" width="400" /></a></div>
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The radio is a short wave radio operates under either USB or LSB voice mode, or cw mode. The frequency range is 1.6 MHz to 12.999 MHz and it has 10 preset channels. The radio is measured 270mm X 200mm X 66mm with battery, weights 5.6 kg with header and 2.4 meter antenna and carrying backpack.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgjhzFJkYGCj47DfwMZ4Ohl_ufn3mQPBECe9sd_eqjPwHnCHjhCBt-Q68RyiGSbjRd6GCPIStdMeBKBeDj7YMrJGe7CRteSO2IZhdII_m_IXF6MgqXQ3UTRs_jzW1s31WgaIT9Pe1yGrLo/s1600/5w-2.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgjhzFJkYGCj47DfwMZ4Ohl_ufn3mQPBECe9sd_eqjPwHnCHjhCBt-Q68RyiGSbjRd6GCPIStdMeBKBeDj7YMrJGe7CRteSO2IZhdII_m_IXF6MgqXQ3UTRs_jzW1s31WgaIT9Pe1yGrLo/s400/5w-2.JPG" width="400" /></a></div>
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The output power is 5 Watts, supplied by 12 V rechargeable
batteries. The communication range is between 5 to 10 km using 12.4 meter
antenna depending on the frequency used. When using 15 meter wire antenna, range
could be longer than 80 km when using a higher frequency.<o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj9vQ5WzJvRxGMF1gcXDron9c2InLKVKY01tKzau-c7bsTek5e0tSJ5B0Ormpxte-wnxGyvGfFtRN6KPVO9kCUyN7V5NFquqNmBVALlMzRUGCTE4eEINl3flVywhtuCK3g_4uUrHAMSiF8/s1600/5w-3.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj9vQ5WzJvRxGMF1gcXDron9c2InLKVKY01tKzau-c7bsTek5e0tSJ5B0Ormpxte-wnxGyvGfFtRN6KPVO9kCUyN7V5NFquqNmBVALlMzRUGCTE4eEINl3flVywhtuCK3g_4uUrHAMSiF8/s400/5w-3.JPG" width="400" /></a></div>
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Since it is light-weighted and easy to operate, troops like it very much. Further development of this radio add a frequency agile module, and this upgraded radio was formally adopted by Chinese military as TBR-133 shortwave SSB radio.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh82KWeCVla-2gQlRAeatwT9k3A3waepL3u-4L6IpkW_uBQqlCpxxQazC_wzn9EFKt_r2YFoE81b13xQiLCOCJpsOvI2FEhuTXw_GVHeX_3Cb9N1LnQaXMTutFyIEKJtsuIRPTvd3Vv4V4/s1600/5w-5.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="912" data-original-width="1600" height="227" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh82KWeCVla-2gQlRAeatwT9k3A3waepL3u-4L6IpkW_uBQqlCpxxQazC_wzn9EFKt_r2YFoE81b13xQiLCOCJpsOvI2FEhuTXw_GVHeX_3Cb9N1LnQaXMTutFyIEKJtsuIRPTvd3Vv4V4/s400/5w-5.JPG" width="400" /></a></div>
<br />Unknownnoreply@blogger.com4tag:blogger.com,1999:blog-1224438592318142220.post-76036117793485200802018-12-09T22:32:00.000-05:002018-12-09T22:32:47.169-05:00TBR-142 Artillery Communication System<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgodP05Ku2jop0jg5_WtTBX1PuHWrfjHrKpa4q5KO62r3WIcnsGDMhcBRQk6ljxYzXigPyGk0uQnOn0lGSjk5R1J0cRTFhko8eNLZNXHChxfd3wwR6mnt7iSDwaLQ0L4ngKTMBAZZvo31Y/s1600/142-1.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgodP05Ku2jop0jg5_WtTBX1PuHWrfjHrKpa4q5KO62r3WIcnsGDMhcBRQk6ljxYzXigPyGk0uQnOn0lGSjk5R1J0cRTFhko8eNLZNXHChxfd3wwR6mnt7iSDwaLQ0L4ngKTMBAZZvo31Y/s400/142-1.JPG" width="400" /></a></div>
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I wrote a blog 10 years ago about <a href="http://chinesemilitaryradio.blogspot.com/2009/10/tbr-142-i-artillery-vhf-transceiver.html">TBR-142 (I),</a> it seems that it is time to update my knowledge. TBR-142 Artillery Communication System was developed as part of the ZXY88-200 Artillery Command and Control System in early 90’s and it functions as the communication section of the system. It also could work independently as communication devices for artillery units. The system mainly consists TBR-142(I) VHF Transceiver, TBR-142(II) Commanding Device, TBR-142(IIID) Multifunction telephone and TBR-142(IIIG) Control Unit for Anti-Aircraft Artillery system. The system works as this: </div>
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(1) When works independently:</div>
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For gunner, the system consists a TBR-142(I) VHF transceiver and a TBR-142(IIID) multifunction telephone. </div>
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For commander, the System consist a TBR-142(II) Commanding Device which is commander’s multifunction telephone and a transceiver (either a TBR-142(I), or a TBR120 VHF transceiver).</div>
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(2) When works within ZXY88-200 Artillery Command and Control System:<br />
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In ground artillery system:</div>
<ul>
<li>For Gunner, in addition to TBR-142(I) VHF transceiver and a TBR-142(IIID) multifunction telephone, there is a Gunner’s data console come from ZXY88-200 system. This device is connected to the TBR-142(IIID) multifunction telephone and display data sent from commander. </li>
<li>For the commander, the TBR-142(II) Commander’s multifunction telephone and transceiver are connected to ZXY88-200 as the communication device.</li>
</ul>
In Anti-Aircraft Artillery system:<br />
<ul>
<li>For Gunner, in addition to TBR-142(I) VHF transceiver and a TBR-142(IIID) multifunction telephone, there is a TBR-142(IIIG) device which connect the TBR-142(IIID) and the anti-aircraft artillery piece and control the gun’s aiming and firing.</li>
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What I have here is a gunner’s unit. It consists a TBR-142(I) VHF transceiver, a TBR-142(IIID) multifunction telephone, a TBR-142 (IIID) speaker plus two antennas, handset, headset and some other accessories, all are carried by a plastic box.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjO3bEuQCFdZ0-Sl9DbGzEyztLazsc7hqg7kKryENiDgIvFk7RVt-fJZo16jtPbuK-VnGyueCNiql4z43FFfDLFvK38EwRShXYIhvbSwL2ZVovVgnxnOysnaFA_Om-kMvasENmbJPIswAc/s1600/142-2.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjO3bEuQCFdZ0-Sl9DbGzEyztLazsc7hqg7kKryENiDgIvFk7RVt-fJZo16jtPbuK-VnGyueCNiql4z43FFfDLFvK38EwRShXYIhvbSwL2ZVovVgnxnOysnaFA_Om-kMvasENmbJPIswAc/s400/142-2.JPG" width="400" /></a></div>
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<span style="line-height: 107%;"><b>TBR-142(I) VHF FM transceiver (code
name 865-1):</b><o:p></o:p></span></div>
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<span style="background: white; line-height: 107%;">The
TBR-142 (I) is a channel-based VHF FM transceiver. It could work alone or connected to a </span><span style="line-height: 107%;">TBR-142 (IIID) as the wireless portion of the
gunner’s communication unit. The radio <span style="background: white;">works within 40.000 to 59.975MHz with
output power of 1 Watt or 0.3 Watt selectable. It is powered by a 12V Ni-Ca
rechargeable battery unit or external 12V DC power source like a vehicle
battery. It measures 217x135x58, and
weight about 2.7 kg with battery, antenna and headset. It has a three-level voice volume control with
squelch mode. There are three antennas: a 1.3-meter whip antenna, a 0.3-meter
short antenna and a 10-meter wire antenna.
When using 0.3-meter short antenna, the communication distance over a
flat terrain is about 500 meters; and when using 1.3-meter whip antenna, the
communication distance is about 2 km.</span><span style="font-size: 14pt;"><o:p></o:p></span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi1cKCQBlP_Ryugx8j18dbSJ8j2QSUHh2heOiRbQNeJ3dfTmlsZPaf-Yeez2ou0GaQdXGGaG3IoPfrvszla1dynbCk9rx6Sq0vvr8vxcJzVofvaLU6fZw1mg-RXFg1XEgdf-xs_kGVfy-g/s1600/142-3.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi1cKCQBlP_Ryugx8j18dbSJ8j2QSUHh2heOiRbQNeJ3dfTmlsZPaf-Yeez2ou0GaQdXGGaG3IoPfrvszla1dynbCk9rx6Sq0vvr8vxcJzVofvaLU6fZw1mg-RXFg1XEgdf-xs_kGVfy-g/s400/142-3.JPG" width="400" /></a></div>
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<span style="line-height: 107%;"><b>TBR-142(IIID) Multifunction Telephone
(code name 865-3D):</b><o:p></o:p></span></div>
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<span style="line-height: 107%;"><br /></span></div>
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<span style="line-height: 107%;">TBR-142(IIID) is a multifunction
telephone. It could work alone as a
field telephone; or it could be connected to a TBR-142 (I) radio form a
gunner’s communication unit; and it also could be connected to a gunner’s data
console or a TBR-142(IIIG) device and works as a communication section within
ZXY88-200 Artillery Command and Control System.<o:p></o:p></span></div>
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<span style="line-height: 107%;">TBR-142(IIID) has the same dimension
as that of <span style="background: white;">TBR-142 (I) and weights
about the same as that </span>of <span style="background: white;">TBR-142
(I). Same as that of 865-1, it is
powered by a 12V Ni-Ca rechargeable battery or external 12V DC power
source. The TBR-142 (IIID) Speaker is
part of the 865-3D.</span><span style="font-size: 14pt;"><o:p></o:p></span></span></div>
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<br />Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-1224438592318142220.post-5840644634120340972018-11-26T08:56:00.000-05:002018-11-26T08:56:03.140-05:00139 with Chairman Mao’s quotation <div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4AEW2RGEGN6KX84Yfm_an_QOJpy8j3BYqqEy562VXYetAv7Q0brVLY5N-JE8pib2gros3O4euwXzvdnw0l-x8rN9SgVJnWbUsNTppxIvSWYV6-8TpQb5MHyhcWZ7kLWn-0qLCIFceVr0/s1600/139-1.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4AEW2RGEGN6KX84Yfm_an_QOJpy8j3BYqqEy562VXYetAv7Q0brVLY5N-JE8pib2gros3O4euwXzvdnw0l-x8rN9SgVJnWbUsNTppxIvSWYV6-8TpQb5MHyhcWZ7kLWn-0qLCIFceVr0/s400/139-1.JPG" width="400" /></a></div>
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<span style="font-family: "calibri"; font-size: large;">This one is a <a href="http://chinesemilitaryradio.blogspot.com/2008/10/type-139-short-wave-field-portable.html">139 tube SW receiver</a> I purchased from eBay. <span style="mso-spacerun: yes;"> </span>The previous owner could never get it working,
and I was pretty confidence that I could get it fixed since I have all the spare
tubes, parts and manual.<span style="mso-spacerun: yes;"> </span>The reason I
want to have it is that it has Chairman Mao’s quotation on it, it is a highly sought-after item in China. <span style="mso-spacerun: yes;"> </span>It would normally sell around 3000 Yuan (about $450).</span></div>
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<span style="font-family: "calibri";"><span style="font-size: large;">After received it, I connected the power and turned it on,
no sound at all.<span style="mso-spacerun: yes;"> </span>It was expected.<span style="mso-spacerun: yes;"> </span>I opened it up, the first thing popped into my
eyes was the fuse.<span style="mso-spacerun: yes;"> </span>I took it off and
found the wire inside was broken.<span style="mso-spacerun: yes;"> </span>I
found a spare fuse, put it on, turned on the receiver again, sound immediately
came out from my headset.<span style="mso-spacerun: yes;"> </span>I was
pleased.<span style="mso-spacerun: yes;"> </span>This receiver was made in 1968,
and it has been 50 years since.<o:p></o:p></span></span></div>
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<span style="font-family: "calibri";"><span style="font-size: large;">One question I have on this receiver is that it is all-tube radio,
I expect a delay after turn the power on since it takes time to heat up the
filament inside tubes.<span style="mso-spacerun: yes;"> </span>But this receiver
does not have any delay once the power is turned on.<span style="mso-spacerun: yes;"> why is that?</span></span></span></div>
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<span style="font-family: "calibri"; font-size: large;"></span><br /></div>
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<span style="font-family: "calibri"; font-size: large;">(The standard power source for this radio is a 1.5V / 90V unit battery. The one I use is a DIY power convertor I brought in China many years ago.)</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjmog2pJOwFPSyv1MBEgW_Lws8CbyfZzYs1yz-PfVfqlUnmfAEHLZr56fDC0cwohRn-ms8VPsnJCQJD0lKhMe3UyJRJPY85JryDKoUwpKBFdxqPS_s2ZrrD-8O4Pr3LB4iXXMH3rcU2HNM/s1600/139-3.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1554" data-original-width="1600" height="387" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjmog2pJOwFPSyv1MBEgW_Lws8CbyfZzYs1yz-PfVfqlUnmfAEHLZr56fDC0cwohRn-ms8VPsnJCQJD0lKhMe3UyJRJPY85JryDKoUwpKBFdxqPS_s2ZrrD-8O4Pr3LB4iXXMH3rcU2HNM/s400/139-3.JPG" width="400" /></a></div>
<br />Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-1224438592318142220.post-30642175166319714752018-11-07T11:28:00.004-05:002018-11-08T13:06:34.666-05:00702D AM Transceiver <div class="separator" style="clear: both; text-align: center;">
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEikABIbWjIBxEpxIK_9f_Vi8IX-LbDgi-bUuSWfYsOIozWIsNpLlj1mN7viUPSdOsT7WyF5LaE6_EhH6tFr2jLVTeQFSDm2GXKIpx-iL1ApzRS72XL7D2tzdjLtb6KxMYm6IMOA3vRyb_k/s1600/702-0.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="635" data-original-width="474" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEikABIbWjIBxEpxIK_9f_Vi8IX-LbDgi-bUuSWfYsOIozWIsNpLlj1mN7viUPSdOsT7WyF5LaE6_EhH6tFr2jLVTeQFSDm2GXKIpx-iL1ApzRS72XL7D2tzdjLtb6KxMYm6IMOA3vRyb_k/s400/702-0.jpg" width="296" /></a></div>
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<span style="color: #222222; font-family: "arial" , sans-serif; font-size: 10.0pt; line-height: 107%;">When Chinese troops step into Korean War, they found that they badly
needed wireless communication equipment. In one hand, orders were given to
Soviet for immediate import; on the other hand, requirements were given to
domestic works. The requirement for a Battalion-Company level SW transceiver
was given to Tianjing Wireless Works (Works No. 712) in end of 1950. Development started
in November 1950 and the shop quickly brought up prototypes in April 1951. Its code name is 702 and saw large scale action before the end of Korea War.</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgQROKTK21JoSOTp8mRLA7VcWKLTC83qFe5t8tWW5UFKtIkbu9mLWP7Tk9rjT2fos5icl-1nqqgBjzRnBXzvWIGtQv7n6k1XxdmciCp5x2FLOQNNWQmX0nxJAatJq1hqrFcO7YPXAqZn4E/s1600/702-1.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgQROKTK21JoSOTp8mRLA7VcWKLTC83qFe5t8tWW5UFKtIkbu9mLWP7Tk9rjT2fos5icl-1nqqgBjzRnBXzvWIGtQv7n6k1XxdmciCp5x2FLOQNNWQmX0nxJAatJq1hqrFcO7YPXAqZn4E/s400/702-1.JPG" width="400" /></a></div>
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<span style="color: #222222; font-family: "arial" , sans-serif; font-size: 10pt; line-height: 107%;">The 702 radio uses two imported tubes (2П2П, later production uses
domestic 2P2 tubes) and two diodes </span><span style="color: #222222; font-family: "arial" , sans-serif; font-size: 10pt; line-height: 107%;">(Д1Ж), other components were from Works 712
itself and other local shops and manufacturers.
The radio consists a radio body, a 2.34-meter pull-out type 6-section wipe
antenna, a 20-meter wire antenna, a head set and a backpack carrying a battery
unit plus the radio body and accessories when not in use. </span><span style="background: white; font-family: "trebuchet ms" , sans-serif; font-size: 9.5pt; line-height: 107%;">The radio body weighs about 1.9 kg and is measured
120x80x30 mm. I have never seen a
battery for 702 radio, but by judging the size of the backpack, it should be
measured 29x14x9 cm, and weights 2-3 kg. </span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgEETZR4Ud084GGuas2_-QCorF9ITtnNJQ3PaAX56rLixLmLc6SMVHUQgRkKpMEbWfyq_TQqbL9UzTnEJvMhGCGHXzHeeSfPo1W3kB_UgTt0u6kuxDxLazdhIHj0tYS5P98JrMkSJAf9FA/s1600/702-2.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgEETZR4Ud084GGuas2_-QCorF9ITtnNJQ3PaAX56rLixLmLc6SMVHUQgRkKpMEbWfyq_TQqbL9UzTnEJvMhGCGHXzHeeSfPo1W3kB_UgTt0u6kuxDxLazdhIHj0tYS5P98JrMkSJAf9FA/s400/702-2.JPG" width="400" /></a></div>
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<span style="color: #222222; font-family: "arial" , sans-serif; font-size: 10.0pt;">The radio operates at
frequency of 26.1 to 37.0 MHz, right at the border between HF and VHF. It is powered by a battery unit with output
voltage of 3V, -7.5V and 96V. The
transmitting output power is 0.05 to 0.1W and operates in AM mode. The receiving part of the radio is a two-tube
super-regenerative AM receiver. The
frequency scale has 11 numbered marks (0 to 10), corresponding to 26.10, 26.60,
27.35, 28.20, 29.10, 31.05, 32.35, 34.05, 35.65, and 37.00 MHz. <o:p></o:p></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjvYBhzhiZ6ou9BLjL5Ow7MvcjDFjywZyfloe0s66GVK98F2eNEfudOVC_XHUSa6ybeiwHKwTvYSHYNUHJs14tT9G8-nlQlB2xeeYFNS8-m9rQsUUzufiGQ5sZnmyHA2t4JiJKc-mAQpLM/s1600/702-3.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjvYBhzhiZ6ou9BLjL5Ow7MvcjDFjywZyfloe0s66GVK98F2eNEfudOVC_XHUSa6ybeiwHKwTvYSHYNUHJs14tT9G8-nlQlB2xeeYFNS8-m9rQsUUzufiGQ5sZnmyHA2t4JiJKc-mAQpLM/s400/702-3.JPG" width="400" /></a></div>
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<span style="color: #222222; font-family: "arial" , sans-serif; font-size: 10.0pt;">702 radio had gone
through several revisions during its production life. Mine is a D model, the last model I believe,
built in early 60’s. I am still looking
for a whip antenna for my 702 radio.<o:p></o:p></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg54cMZ2MFU645tNgktW_HYicSs3XyUVRMLFCltUE8Ma8y9oFTfkir3BTYygOm3tqNb-iStLLwRPRJY3vIGe8Ui9KWzDJ2rujBDJreu60y1PCHhZJB77HbV4RZlkZoImjVNucX3yS1Z7CA/s1600/702-4.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1219" data-original-width="1600" height="303" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg54cMZ2MFU645tNgktW_HYicSs3XyUVRMLFCltUE8Ma8y9oFTfkir3BTYygOm3tqNb-iStLLwRPRJY3vIGe8Ui9KWzDJ2rujBDJreu60y1PCHhZJB77HbV4RZlkZoImjVNucX3yS1Z7CA/s400/702-4.JPG" width="400" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjKkquIB9k0DrtTySUMPId1S0v-DFj4ID1OkHiDW-Ba1vhmxpeLBIcHWv3PrqOS8orPZBpHDYHkBYoRAhDT0kw3HweS4xkNyagMpOPjGxyG-u8bZ_fFL4lzbqKwBquLNkK6E1-Xba4xSpU/s1600/702-5.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1219" data-original-width="1600" height="303" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjKkquIB9k0DrtTySUMPId1S0v-DFj4ID1OkHiDW-Ba1vhmxpeLBIcHWv3PrqOS8orPZBpHDYHkBYoRAhDT0kw3HweS4xkNyagMpOPjGxyG-u8bZ_fFL4lzbqKwBquLNkK6E1-Xba4xSpU/s400/702-5.JPG" width="400" /></a></div>
<br />Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-1224438592318142220.post-50865994472600793262018-11-06T11:10:00.000-05:002018-11-06T11:10:01.822-05:00BWS-1 VHF FM Receiver<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhEBaF4r2Np4SSDHSRPxmxVyB581bB0mMjCPdnpeCqTIjnc2d_r7KSVOjYsQ48pCY8vgjxxZaAu26IAQYi711Hfj6nll7HezI8b6zbyiRSSVVuItU7rVmzJgGFM2yzRcu7VOPlm6-CuU_4/s1600/BSw-1.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1245" data-original-width="1600" height="310" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhEBaF4r2Np4SSDHSRPxmxVyB581bB0mMjCPdnpeCqTIjnc2d_r7KSVOjYsQ48pCY8vgjxxZaAu26IAQYi711Hfj6nll7HezI8b6zbyiRSSVVuItU7rVmzJgGFM2yzRcu7VOPlm6-CuU_4/s400/BSw-1.JPG" width="400" /></a></div>
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<span style="font-size: 14.0pt; line-height: 107%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">The BWS-1 VHF FM receiver is intended
to work with 861 and 861A transceiver. It is a
receiver only device to receive the transmitting from 861/A transceiver. It is designed for squad leaders to listen to the commands from platoon/company commander.
It is believed that BWS-1 saw Sino-Vietnam border conflict during 80’s,
but number of units deployed is very limited.<o:p></o:p></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiAVGWlTlhwHwMdE_Wu2TmypvmGKFEJ7H5Lz2tyduwEOqHERfn7wNSj6FSbWrkWXCwKg90dVwkLOzYywyR0a_Ygwpj89gF-_jRM11m7vC0mJ9gKgjCxbjm09fBfMSJrbXOWeTCZh59KdXY/s1600/BSw-2.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1245" data-original-width="1600" height="310" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiAVGWlTlhwHwMdE_Wu2TmypvmGKFEJ7H5Lz2tyduwEOqHERfn7wNSj6FSbWrkWXCwKg90dVwkLOzYywyR0a_Ygwpj89gF-_jRM11m7vC0mJ9gKgjCxbjm09fBfMSJrbXOWeTCZh59KdXY/s400/BSw-2.JPG" width="400" /></a></div>
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<span style="background: white; font-size: 14pt; line-height: 107%;">The radio weighs
about 400 g with battery. The radio body
itself (with battery) is measured 120x70x30 mm, not much bigger than a standard
cigarette box. The BSW-1 has two subtype, Type A and Type B. They are the same radios with different channel
settings. Type A has channel 1, 2, 3, 4
(</span><span style="background: white; font-family: "trebuchet ms" , sans-serif; font-size: 9.5pt; line-height: 107%;">49.3, 49.4, 49.5 and 49.5</span> MHz<span style="background: white; font-size: 14pt; line-height: 107%;">); Type B has
channel 5, 6, 7 and 8 (</span><span style="background: white; font-family: "trebuchet ms" , sans-serif; font-size: 9.5pt; line-height: 107%;">49.6, 49.7,
49.8, 49.9 and 50.0</span> MHz<span style="background: white; font-size: 14pt; line-height: 107%;">). they are corresponding
to the channel number on a 861 radio. The
radio </span><span style="font-size: 14.0pt; line-height: 107%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">is powered by two AA size batteries. The antenna is built into headset. There is only one control knob on the radio, it is a power switch and channel selector. There is no volume control for this radio. <o:p></o:p></span></div>
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<br />Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-1224438592318142220.post-29272783013396028952018-11-05T09:18:00.001-05:002018-11-05T09:18:06.151-05:00The 826 VHF FM Paratrooper’s Direction-Finding Receiver <div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvt22c5_YGyuTuyhIOjzqRQ3dFvOlhxDyFS2Z-YXWtyA_vggo84DL_okqOf3tTsX8FBMfmqmy8URW8RuxnYCqxlxbePgpUa-NA8W4aGU_Yui3H_Iiw_yj0xWOTXssKNLZBNIeQ7m-B3PQ/s1600/826-1.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvt22c5_YGyuTuyhIOjzqRQ3dFvOlhxDyFS2Z-YXWtyA_vggo84DL_okqOf3tTsX8FBMfmqmy8URW8RuxnYCqxlxbePgpUa-NA8W4aGU_Yui3H_Iiw_yj0xWOTXssKNLZBNIeQ7m-B3PQ/s400/826-1.JPG" width="400" /></a></div>
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<span style="line-height: 107%;">The 826 Paratrooper’s direction-finding </span>VHF FM receiver is intended to work with 823 Paratrooper’s Transceiver. It is a receiver only device to receive
signal from a 823 transceiver. It also
could find the direction of the signal. It
is designed for a paratrooper to receive the commands from their leader and
find the direction of their leader’s radio signal. </div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhstmzllMRVwmtuGK9pS0DJBP4U2EFdKcr8cWUg298oLG0nXJbEXTymfjF_uJ9ogQSpGKa1lKV1fiaTgEsLCY9N1rIw8sI0UfYDOwBIuXfI6jmCWOLQ_Ab3gxeToITkyMi8Z4i_nXxwC-s/s1600/826-2.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhstmzllMRVwmtuGK9pS0DJBP4U2EFdKcr8cWUg298oLG0nXJbEXTymfjF_uJ9ogQSpGKa1lKV1fiaTgEsLCY9N1rIw8sI0UfYDOwBIuXfI6jmCWOLQ_Ab3gxeToITkyMi8Z4i_nXxwC-s/s400/826-2.JPG" width="400" /></a></div>
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<span style="background: white; line-height: 107%;">It weighs
about 290 g without battery, antenna and headset. The radio body itself is measured 120x80x30
mm. It has three channels corresponding to the channel 1, 2 and 3 on a 823
radio. The radio </span><span style="line-height: 107%;">is powered by three AA size batteries. The antenna is a simple wire type antenna; it
also has a built-in direction-finding antenna. When in direction finding mode, the wire antenna has to be removed from the radio body, so that the built-in directional antenna could be functional. The headphone is also a simple one
side earphone. <span style="font-size: 14pt;"><o:p></o:p></span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh5kpS3ZnFpSrJbMG6EMZf2bEPb4XBvTBAAU3s0tKRXKeHaSN_BerTkvmGCcP7a341x_yp7zK0DxtTjAbmADd3Zh2e5xpD3ZItqt47fEE6vm4NV1zvOHIp5UMLFv09lABImLaXMD7r7lCI/s1600/826-3.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh5kpS3ZnFpSrJbMG6EMZf2bEPb4XBvTBAAU3s0tKRXKeHaSN_BerTkvmGCcP7a341x_yp7zK0DxtTjAbmADd3Zh2e5xpD3ZItqt47fEE6vm4NV1zvOHIp5UMLFv09lABImLaXMD7r7lCI/s400/826-3.JPG" width="400" /></a></div>
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<span style="background: white; line-height: 107%;">The 826 </span><span style="line-height: 107%;">VHF FM Paratrooper’s direction-finding
receiver <span style="background: white;">was developed at the same
time as that of the Type 823 transceiver.
It was certified around in early 80’s.
Now it is long retired from PLA paratroop force. My sample is built in 1985.</span><span style="font-size: 14pt;"><o:p></o:p></span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgUv3qQAJU-fX-Ze2wOozdWd4hdO-T5BjzfyGoSNiFPE89RJdrlNB1WXM-OROdjG9IsCLyAfgFtFdVH4QGoMuhaYK4ZuTAsvPA23QPZjo5nM5dldp8f4fS0yM5CYzJzg1r0BswC_fMUkuQ/s1600/826-4.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgUv3qQAJU-fX-Ze2wOozdWd4hdO-T5BjzfyGoSNiFPE89RJdrlNB1WXM-OROdjG9IsCLyAfgFtFdVH4QGoMuhaYK4ZuTAsvPA23QPZjo5nM5dldp8f4fS0yM5CYzJzg1r0BswC_fMUkuQ/s400/826-4.JPG" width="400" /></a></div>
<br />Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-1224438592318142220.post-12622639415830572142018-11-03T15:18:00.003-04:002018-11-03T15:18:43.626-04:00TBR-170 transceiverIt seems that there is a replacement of TBR-115/116 VHF FM transceiver, the new toy is TBR-170 VHF/UHF wide-band transceiver. There is not much information available about this radio. It is said that it is on par with American AN/PRC-152.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjn5EoLYgVCwkXLSDh4HiDhyphenhyphen45PdOOD04wPddi_ORAeQwtx5rCZ4podSfWSPlller4sc0ZGZfL7anQAv41POaCjnt8rLz29HDGp2nltiLVK0J4b7IwHMfhDnD_-EVq06Oq2xkIOg227HB4/s1600/NcDS-fyiphwc3067846.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="412" data-original-width="550" height="298" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjn5EoLYgVCwkXLSDh4HiDhyphenhyphen45PdOOD04wPddi_ORAeQwtx5rCZ4podSfWSPlller4sc0ZGZfL7anQAv41POaCjnt8rLz29HDGp2nltiLVK0J4b7IwHMfhDnD_-EVq06Oq2xkIOg227HB4/s400/NcDS-fyiphwc3067846.jpg" width="400" /></a></div>
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<span style="color: #222222; font-family: "georgia" , "times new roman" , serif; font-size: x-small;"><i>courtesy of mil.sohu.com</i></span></div>
Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-1224438592318142220.post-65788674256818236172018-11-02T00:07:00.002-04:002018-11-12T01:07:54.692-05:00TBR-002 Squad Leader VHF FM Transceiver<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhlGthSv_ha_SkIdrVsN_n_JPamdnRdso7XtfLFdF1GELWbOqjwF8Nvom4mMmkaAS2JawMqYRa8kOhwaIJw0FDmtyAUv0S_u6DZN-zbfS3gx6EgrqB5DWR00VFj0CrfZXYA4vYI4605svw/s1600/002-1.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1245" data-original-width="1600" height="310" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhlGthSv_ha_SkIdrVsN_n_JPamdnRdso7XtfLFdF1GELWbOqjwF8Nvom4mMmkaAS2JawMqYRa8kOhwaIJw0FDmtyAUv0S_u6DZN-zbfS3gx6EgrqB5DWR00VFj0CrfZXYA4vYI4605svw/s400/002-1.JPG" width="400" /></a></div>
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<span style="line-height: 107%;">The latest and maybe the last Squad
Leader transceiver for PLA infantry is the TBR002 Squad Leader VHF FM
transceiver (TBR002 </span><span style="font-family: "ms gothic"; line-height: 107%;">班</span><span style="font-family: "microsoft jhenghei" , sans-serif; line-height: 107%;">长电台</span><span style="line-height: 107%;">). It is a further development of TBR001A
radio. The biggest improvement over 001A
is the channel frequency could be set on the radio itself, no need of a
specific device anymore. The antenna,
battery unit, headset, and charging station are also redesigned. It was introduced into PLA infantry unit
around 2008. It is designed to communicate
between squad leaders and platoon/company commanders.<span style="font-size: 14pt;"><o:p></o:p></span></span></div>
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<span style="background: white; line-height: 107%;">The radio weighs
about 460 g with antenna and battery. The
radio body itself (with battery) is measured 134x55x30 mm, a little smaller
than TBR001A. It operates on frequency range of 45.000 MHz to 54.975 MHz, channel spacing is 25 kHz. There are 10 preset channels</span><span style="line-height: 107%;">.
There is a speaker and PTT control on
the radio so that the radio could be operated without a headset. The output power is 0.1W on low and 0.8W on
high, and normal communication distance is about 2 km. It is powered by a 7.2V 2000mAh rechargeable
Lithium battery unit. There are 6 push
buttons and a small led screen on the radio <span style="font-size: 14pt;"><o:p></o:p></span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg9b0B2KHwy3ObECEN6pt4c5wWzFfaFgVFKI0BA5-MfWVHMDsfG22jMTWWMzNP5Muy3k4MTsWPtYzBs0kxx0IIyG0qWGVR7iioiwW9nJoFJDLWywf0ccasrXVI-jHEXzIc2BNUYmQrr9SE/s1600/002-2.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg9b0B2KHwy3ObECEN6pt4c5wWzFfaFgVFKI0BA5-MfWVHMDsfG22jMTWWMzNP5Muy3k4MTsWPtYzBs0kxx0IIyG0qWGVR7iioiwW9nJoFJDLWywf0ccasrXVI-jHEXzIc2BNUYmQrr9SE/s400/002-2.JPG" width="400" /></a></div>
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<span style="line-height: 107%;">The TBR002
transceiver is the current equipment in service with PLA infantry units. The latest information shows that PLA starts
to shift from traditional VHF transceiver to network based UHF communication device. The latest toy
is TBR-180.</span><span style="font-size: 14pt; line-height: 107%;"> <o:p></o:p></span></div>
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<br />Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-1224438592318142220.post-47625511570021067282018-11-01T09:15:00.001-04:002018-11-01T09:15:15.460-04:00TBR001A Squad Leader VHF FM Transceiver<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhMOd5ECJ-h8jJr8mHkek_CZZTDSTZEn0kHzgQt-kav9iaIlo7PMLjbbHZhpHElzP2Y6_a_2rdN8JJTQwKxgYc9azRpoV_QODKeTSMyMk5T6dGVCM8w91uP99kWtKy4YpuI4nTj4dC9muc/s1600/001A-1.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1245" data-original-width="1600" height="310" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhMOd5ECJ-h8jJr8mHkek_CZZTDSTZEn0kHzgQt-kav9iaIlo7PMLjbbHZhpHElzP2Y6_a_2rdN8JJTQwKxgYc9azRpoV_QODKeTSMyMk5T6dGVCM8w91uP99kWtKy4YpuI4nTj4dC9muc/s400/001A-1.JPG" width="400" /></a></div>
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TBR001A Squad Leader VHF FM transceiver (TBR001A <span style="font-family: "ms gothic"; mso-bidi-font-family: "MS Gothic";">班</span><span style="font-family: "microsoft jhenghei" , sans-serif; mso-bidi-font-family: "Microsoft JhengHei";">长电台</span>)
is a much-improved version of the TBR001 radio.
The radio itself is completely redesigned, only antenna, battery unit,
headset and charging station are come from TBR-001 radio. It borrowed some design elements from TBR115 so that it is more like a smaller version of TBR-115
radio. It was introduced into PLA infantry
unit around 2000. It is designed to communicate
between squad leaders and platoon/company commanders. It could also be used as a repeater in the
battle field.<o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjEQVsay6QHNsDzDNaGzDiezAKZPffMCrUA_RuDd0zDaodU2j4l_uhyphenhyphenPKXN8h1nROyw2h93UvVWNXmCTusGXMg7QS0AHE2mTbRmdvYzxaSPmXniOQ5Y6RejBHphMF7rdjr04p9B_SQc0sE/s1600/001A-7.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1245" data-original-width="1600" height="310" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjEQVsay6QHNsDzDNaGzDiezAKZPffMCrUA_RuDd0zDaodU2j4l_uhyphenhyphenPKXN8h1nROyw2h93UvVWNXmCTusGXMg7QS0AHE2mTbRmdvYzxaSPmXniOQ5Y6RejBHphMF7rdjr04p9B_SQc0sE/s400/001A-7.JPG" width="400" /></a></div>
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It weighs about 470 g with antenna and battery. The radio body itself (with battery) is measured 148x55x35 mm. It operates on frequency range of 46.5 MHz to 49.5 MHz. There are 10 preset channels (channel 1 – 8 for communication and channel 9/10 for repeater), however it required another device to set the channel frequency. There is a speaker and PTT control on the radio so that the radio could be operated without a headset. The output power is 0.1W on low and 0.5w on high, and normal communication distance is about 1000 meters. <br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgZ8uIYEVnwJKnrtqlMFie-ybhrGfsroWZN8djoGq8aAptwJ0ORH6mw0JMyHd_KoC9O96LRbefkO4-5_FYlFF4jUhL3OwXaWJAcNUVvrHxp3z07jN5ZOFqtWF7rYaZklOfC6B2zq3MyQXE/s1600/001A-3.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1400" data-original-width="1400" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgZ8uIYEVnwJKnrtqlMFie-ybhrGfsroWZN8djoGq8aAptwJ0ORH6mw0JMyHd_KoC9O96LRbefkO4-5_FYlFF4jUhL3OwXaWJAcNUVvrHxp3z07jN5ZOFqtWF7rYaZklOfC6B2zq3MyQXE/s400/001A-3.JPG" width="400" /></a></div>
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<span style="text-align: start;">The radio is powered by a 7.2V battery unit attached to bottom of the radio, same as that on TBR001 radio.</span><span style="text-align: start;"> </span><span style="text-align: start;"> </span><span style="text-align: start;">Inside the battery unit, there are 6 AA size rechargeable NiCd batteries.</span><span style="text-align: start;"> </span><span style="text-align: start;">The later production replaced the NiCd batteries with rechargeable Lithium batteries. </span><span style="text-align: start;"> </span><span style="text-align: start;">There are two control knobs on top of the radio, one is for channel selection and the other one serves as a power switch, a volume control and transmit power setting control, and squelch setting control.</span><span style="text-align: start;"> </span></div>
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The TBR001 transceiver is still in service with PLA infantry
units. Requiring another device to set
the channel is the biggest drawback of this radio. Without such a specific device, I cannot even
reset my radio’s channels. It is nowadays
being replaced by more modern TBR002 VHF FM Squad Leader Radio. <o:p></o:p></div>
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<br />Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-1224438592318142220.post-53979174248845970412018-10-31T12:42:00.001-04:002018-11-01T09:11:28.250-04:00TBR001 Squad Leader VHF FM Radio<div class="separator" style="clear: both; text-align: center;">
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TBR001 Squad Leader Radio (TBR001 <span style="font-family: "ms gothic"; mso-bidi-font-family: "MS Gothic";">班</span><span style="font-family: "microsoft jhenghei" , sans-serif; mso-bidi-font-family: "Microsoft JhengHei";">长电台</span>)
is the first-generation Chinese VHF FM transceiver designed to equip a squad leader
in an infantry unit. Information about this radio is scarce, I believe
it was designed in late 90’s, and only saw limited service. The radio looks
like a civilian walky-talky but without a speaker. <span style="background: white; font-family: "trebuchet ms" , sans-serif; font-size: 9.5pt; line-height: 107%;"> </span></div>
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It is very light weighted in military standard, only about 380 g with antenna and battery (without headset). The radio body itself (with battery) is measured 140x60x40 mm. It has 8 channels (49.3, 49.4, 49.5, 49.5, 49.6, 49.7, 49.8, 49.9, and 50.0), and they are compatible with 861, 272 transceivers. The output power is 0.3W and normal communication distance is about 1000m. It is powered by a 7.2V battery unit attached to the bottom of the radio, inside it has 6 AA size rechargeable NiCd batteries, later the battery is replaced by rechargeable Lithium battery.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZX3qKm1KSlz0gMiipA2kGD4_HCvJMhgXjnVc4y5JnhZPYkFPjc-xZFTXvqnLkGGg75s9YDNgnPW002ZD7b2Le-4B-wdTh57pAtuifMupIU-qW6cJVaP6RLd28iANoOEtgx75DqKltyQY/s1600/001-2.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1400" data-original-width="1400" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZX3qKm1KSlz0gMiipA2kGD4_HCvJMhgXjnVc4y5JnhZPYkFPjc-xZFTXvqnLkGGg75s9YDNgnPW002ZD7b2Le-4B-wdTh57pAtuifMupIU-qW6cJVaP6RLd28iANoOEtgx75DqKltyQY/s400/001-2.JPG" width="400" /></a></div>
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The controls are very simple, it has a on/off switch with volume control, a channel selection knob and a squelch control knob. Those control knobs are too small for larger hands. The antenna is a rubber type and 120mm long. The headset is TKOS-4 headset which represent a smaller version of what is for TBR115 transceiver. It also come with a battery charging station which could charge the battery which still attached to the radio or not. The TBR001 transceiver is still in service with PLA infantry unit but is being replaced by more modern TBR001A or TBR002 Squad Leader Radio. </div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi-rDd0iwg-fhOz9tNtxi4Q4NO0eUE5fLaU3rmAL3Aye9gy4LSq7U2NHwia_unFhVEfp0Lqv1kBr_Im7ciUhqJgI1TSrAGPWpJH8mVWdddVrL_QxId-iBfgsvgy9yrcpqHQSz6YseIbgZw/s1600/001-4.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1400" data-original-width="1400" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi-rDd0iwg-fhOz9tNtxi4Q4NO0eUE5fLaU3rmAL3Aye9gy4LSq7U2NHwia_unFhVEfp0Lqv1kBr_Im7ciUhqJgI1TSrAGPWpJH8mVWdddVrL_QxId-iBfgsvgy9yrcpqHQSz6YseIbgZw/s400/001-4.JPG" width="400" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiM44irQojKTtEfLz9DOh_mcp-33sQDPTmkRsnt45YkdZSon1sasIlPqyp3aQBIrHLLnIu1qBwo3gboQBdIAbMMBVKn0DptQiS3ydXIT6VebbEY-K4LQxlUFklioVrDjjZdgr1rtI5k_AM/s1600/001-3.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1400" data-original-width="1400" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiM44irQojKTtEfLz9DOh_mcp-33sQDPTmkRsnt45YkdZSon1sasIlPqyp3aQBIrHLLnIu1qBwo3gboQBdIAbMMBVKn0DptQiS3ydXIT6VebbEY-K4LQxlUFklioVrDjjZdgr1rtI5k_AM/s400/001-3.JPG" width="400" /></a></div>
<br />Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-1224438592318142220.post-61282964728843072552017-12-04T20:00:00.002-05:002018-03-21T10:25:44.063-04:00A211B tube FM Transceiver<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg6qXC7r8HHWm4eEsum0K1lKBgjcDXuRAK6cWRYaxw8VKtjVUdI5LVr5uOCCNQ7ehrkdON0uTgEwuZlyvpC3L7qy3wwX3CKCQz1IYlJ5pDOOnG_c9fDXN9OlwOytpFkHy_disTRJQ2B4nU/s1600/A-01.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg6qXC7r8HHWm4eEsum0K1lKBgjcDXuRAK6cWRYaxw8VKtjVUdI5LVr5uOCCNQ7ehrkdON0uTgEwuZlyvpC3L7qy3wwX3CKCQz1IYlJ5pDOOnG_c9fDXN9OlwOytpFkHy_disTRJQ2B4nU/s400/A-01.jpg" width="400" /></a></div>
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<span style="background-color: white; font-family: "helvetica neue" , "segoe ui" , "helvetica" , "arial" , "lucida grande" , sans-serif; font-size: 13px;">“A” series VHF/FM field backpack transceiver is part of Sino-Soviet tech transfer pack signed in 1950. With Soviet’s technology transfer, Chinese license produced Soviet’s R-105/108/109/114 FM field radios. Their Chinese model names are A130 (R-105, 36.0 to 46.1 MHz), A211(R-108, 28.0 to 36.5 MHz), A212(R-109, 21.5 to 28.5 MHz) and A233(R114, 20.0 to 26.0 MHz). These four radios are basically the same radio but with different frequency range. They are defined by PLA as Regiment-Battalion level radio mainly for artillery units. A130 was used to communicate between regimental artillery HQ to infantry units. A211/A212 was used between regimental artillery HQ and artillery battalion HQs/artillery observation posts. A233 was used to communicate between regimental artillery HQ and armored troops.</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiQo0sUb8LR29T6EVnSNjBYlZ1yEHCGT6HVeBGON8EeTsWwvaK24fqAzipmI6_dQ7SXhHnvk9eG8JolZ3q5h_AulYNm3K7R_8Bqzn3PFdxEeoMtIL4gjV2z8tV7llFSUXia08r5zQD6C9M/s1600/A-02.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiQo0sUb8LR29T6EVnSNjBYlZ1yEHCGT6HVeBGON8EeTsWwvaK24fqAzipmI6_dQ7SXhHnvk9eG8JolZ3q5h_AulYNm3K7R_8Bqzn3PFdxEeoMtIL4gjV2z8tV7llFSUXia08r5zQD6C9M/s400/A-02.jpg" width="400" /></a></div>
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<span style="background-color: white; font-family: "helvetica neue" , "segoe ui" , "helvetica" , "arial" , "lucida grande" , sans-serif; font-size: 13px;">The A series radios are all tube radio with a mechanical vibrator unit to produced 150 V of voltages from 4.8V batteries. The A series radio came with four types of antennas, 1.5 meter wipe antenna, 2.7 meters wipe antenna (1.5 meter antenna plus 4 extension sessions), 10 meters wire antenna and 44 meters directional antenna. Communication distance ranges from 6 km to 20km depend on antenna type and environments. Additional to regular FM transceiver, The A series radios could also be used as a wired field telephone, or a semi/full auto repeater.</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXEflrGfGRhcAOgM5LugGOOEcIkD_Hx61tDWF6QCdBCiic8tzFt4wa3zg80RxFWwcqAHmnHq6K81Guv97q1afLRweFxJSnyu6XTnreQq4flysNiX1zITKo_cY79ILOWOhO8EPlaRqKAs4/s1600/A-03.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXEflrGfGRhcAOgM5LugGOOEcIkD_Hx61tDWF6QCdBCiic8tzFt4wa3zg80RxFWwcqAHmnHq6K81Guv97q1afLRweFxJSnyu6XTnreQq4flysNiX1zITKo_cY79ILOWOhO8EPlaRqKAs4/s400/A-03.jpg" width="400" /></a></div>
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<span style="background-color: white; font-family: "helvetica neue" , "segoe ui" , "helvetica" , "arial" , "lucida grande" , sans-serif; font-size: 13px;">In mid-60’s, model B was introduced. What I could tell is that a squelch mode sensitivity adjustment was added, but this sensitivity adjustment is not very sensitive. The vibrator is still the mechanical type. All A series radios were replaced in early to mid-70’s by 7 series all transistors VHF FM transceivers. My sample is an A211B made in 1969 with full set of accessories and spare tubes/parts. The batteries came with my radio are long dead. I used 8 D size 5AH NiCd rechargeable batteries to power this tube radio. When I first turn my A211B on, no sound came out but the meter indicated the correct voltage. I checked the manual, and it said the vibrator should make constant noise, but my radio was very quiet. I found a new vibrator from the spare tube/parts box and replaced the old one. Turned on the radio again, noise immediately came out of the radio from the new vibrator and static noise also flew out of headset. My A211B is live again after over 40 years in storage.</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGqiQkP9c2wTN0Z0ROZj5Cfi5-YPlUrPDX1bnW9VRKC-WForhibCeYejf1YgDwGzdb_ff8qgdeS_M8FDpiXen0nNgjh85GTi_OAWxOVpR_pGKnxGFSipg78c-d3t202iZPN_PrXIyBucY/s1600/A-04.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1575" data-original-width="1600" height="392" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGqiQkP9c2wTN0Z0ROZj5Cfi5-YPlUrPDX1bnW9VRKC-WForhibCeYejf1YgDwGzdb_ff8qgdeS_M8FDpiXen0nNgjh85GTi_OAWxOVpR_pGKnxGFSipg78c-d3t202iZPN_PrXIyBucY/s400/A-04.jpg" width="400" /></a></div>
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<div class="yiv5416059415MsoNormal" id="yui_3_16_0_ym19_1_1512435441465_4146" style="background-color: white; font-family: "helvetica neue" , "segoe ui" , "helvetica" , "arial" , "lucida grande" , sans-serif; font-size: 13px; line-height: 16.86px; margin: 0in 0in 0pt; padding: 0px;">
<span id="yui_3_16_0_ym19_1_1512435441465_4184" style="-webkit-padding-start: 0px;">A211B:</span></div>
<div class="yiv5416059415MsoNormal" id="yui_3_16_0_ym19_1_1512435441465_4142" style="background-color: white; font-family: "helvetica neue" , "segoe ui" , "helvetica" , "arial" , "lucida grande" , sans-serif; font-size: 13px; line-height: 16.86px; margin: 0in 0in 0pt; padding: 0px;">
<span id="yui_3_16_0_ym19_1_1512435441465_4183" style="-webkit-padding-start: 0px;">Type: VHF FM transceiver</span></div>
<div class="yiv5416059415MsoNormal" id="yui_3_16_0_ym19_1_1512435441465_4143" style="background-color: white; font-family: "helvetica neue" , "segoe ui" , "helvetica" , "arial" , "lucida grande" , sans-serif; font-size: 13px; line-height: 16.86px; margin: 0in 0in 0pt; padding: 0px;">
<span id="yui_3_16_0_ym19_1_1512435441465_4182" style="-webkit-padding-start: 0px;">Frequency: 28.0 to 36.5 MHz</span></div>
<div class="yiv5416059415MsoNormal" id="yui_3_16_0_ym19_1_1512435441465_4144" style="background-color: white; font-family: "helvetica neue" , "segoe ui" , "helvetica" , "arial" , "lucida grande" , sans-serif; font-size: 13px; line-height: 16.86px; margin: 0in 0in 0pt; padding: 0px;">
<span id="yui_3_16_0_ym19_1_1512435441465_4181" style="-webkit-padding-start: 0px;">Transmitting power: 1.2W</span></div>
<div class="yiv5416059415MsoNormal" id="yui_3_16_0_ym19_1_1512435441465_4145" style="background-color: white; font-family: "helvetica neue" , "segoe ui" , "helvetica" , "arial" , "lucida grande" , sans-serif; font-size: 13px; line-height: 16.86px; margin: 0in 0in 0pt; padding: 0px;">
<span id="yui_3_16_0_ym19_1_1512435441465_4180" style="-webkit-padding-start: 0px;">Dimension: 365X385X230 mm</span></div>
<div class="yiv5416059415MsoNormal" id="yui_3_16_0_ym19_1_1512435441465_4179" style="background-color: white; font-family: "helvetica neue" , "segoe ui" , "helvetica" , "arial" , "lucida grande" , sans-serif; font-size: 13px; line-height: 16.86px; margin: 0in 0in 0pt; padding: 0px;">
<span id="yui_3_16_0_ym19_1_1512435441465_4178" style="-webkit-padding-start: 0px;">Weight: 14 kg with batteries, antenna and headset</span></div>
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<span id="yui_3_16_0_ym19_1_1512435441465_4177" style="-webkit-padding-start: 0px;">Auto receiver tracking +-10Kz</span></div>
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<span id="yui_3_16_0_ym19_1_1512435441465_4174" style="-webkit-padding-start: 0px;">Power supply: 2 x Type 2NK24 2.4V rechargeable batteries</span></div>
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<span id="yui_3_16_0_ym19_1_1512435441465_4173" style="-webkit-padding-start: 0px;">Tubes (12 tubes): 3 x 4J1S, 1 x 4P1S, 8 x 2J27S</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJbWotaz_kxzUuEJ3dOpnqlrHsPUc5B4pAe8WUFMcUKoBcO0-2fTHuscS3fdOehFj00xqfEiNaXAPCVsohvPE-CIQ5bttBEUVxqMCGff7cxRlvUpUftptforu_l10thwuH7d6iTLktbUY/s1600/A-05.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJbWotaz_kxzUuEJ3dOpnqlrHsPUc5B4pAe8WUFMcUKoBcO0-2fTHuscS3fdOehFj00xqfEiNaXAPCVsohvPE-CIQ5bttBEUVxqMCGff7cxRlvUpUftptforu_l10thwuH7d6iTLktbUY/s400/A-05.jpg" width="400" /></a></div>
<br />Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-1224438592318142220.post-17225350017813727292017-11-25T22:22:00.000-05:002017-11-27T09:19:21.575-05:00It still works! <div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiRbwiVgaUv9ULGE-Xt97i-_1cZLwS2WKy8CHjqKfADbSjHN32u6SpHodJ7BatBaXrPck_xztU5uBR-EO1I_TTY8ZInl0sJ7mybuhk_s-_jQv-Rfu9NKMPSTjypuz9aClFcgVGIXlrWSBI/s1600/10C-1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiRbwiVgaUv9ULGE-Xt97i-_1cZLwS2WKy8CHjqKfADbSjHN32u6SpHodJ7BatBaXrPck_xztU5uBR-EO1I_TTY8ZInl0sJ7mybuhk_s-_jQv-Rfu9NKMPSTjypuz9aClFcgVGIXlrWSBI/s400/10C-1.jpg" width="400" /></a></div>
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<span style="background: white; font-family: "trebuchet ms" , sans-serif; font-size: 9.5pt;">It is working! What a pleasant surprise! I got this radio 9 years ago for
a nice price, never tested it until this week. I would say this
radio was stored in a not ideal environment before I brought it, most of the
non-painted external parts got rust on it. I tried to clean out the
rust but no luck. I never expect it is still in working
condition. Last week, I decided to give it a try. To my
grateful surprise, it works 100% and goes strong. </span><span style="font-family: "helvetica" , sans-serif; font-size: 10pt;"><o:p></o:p></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgn-fGTUHlXevLiO2dRqqGzur3Q_-ToHjmAhlN7YqaG8qh118p0vxGcP1wu2TxySzNuB0DBeX08kyUOEr-tqJrzvrIpdVV-37_BcCEyztuXPtMPVZNyTUtRXDyZYQJOlyr0OaqwHUQjBSA/s1600/10C-2.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgn-fGTUHlXevLiO2dRqqGzur3Q_-ToHjmAhlN7YqaG8qh118p0vxGcP1wu2TxySzNuB0DBeX08kyUOEr-tqJrzvrIpdVV-37_BcCEyztuXPtMPVZNyTUtRXDyZYQJOlyr0OaqwHUQjBSA/s400/10C-2.jpg" width="400" /></a></div>
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<span style="background: white; font-family: "trebuchet ms" , sans-serif; font-size: 9.5pt;">This radio is
labelled as “10W Crystal Controlled SSB”; it is a USB only radio. No
military code name could be found so far. The background is that in
mid 70s, PLA gave requirements for third generation infantry radios. It has to
be light weight, easy to operate/channel based and reliable. A 10 W SSB device
went into development in mid-70’s targeted to replace the Silicon 2W (Type 73)
Regiment-Battalion level SW transceivers. However, the development mat its
difficulty in late 70’s since manufactory could not develop a reliable
frequency syntheses device. A stop gap device was introduced, crystal
controlled version of 10W SSB transceiver (with an industry name of XD-D2), in
late 70s. This radio saw action in Sino-Vietnam boarder conflict in the 80s,
but never adopted by PLA, the production quantity is very limited.</span><span style="font-family: "helvetica" , sans-serif; font-size: 10pt;"><o:p></o:p></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhG4euiY3jadOfvJeHvt7a9oMDmaTOePEop9AmZ-SWHYessPaJf1zWEENd8p5dyTP_PbEuulGmeLUa855csC0HGo3wf4QlRvGZlwqWlQ3pIGSAU5zHlTt_kSuh9brFF2KGA9-gO4kMxhWs/s1600/10C-3.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhG4euiY3jadOfvJeHvt7a9oMDmaTOePEop9AmZ-SWHYessPaJf1zWEENd8p5dyTP_PbEuulGmeLUa855csC0HGo3wf4QlRvGZlwqWlQ3pIGSAU5zHlTt_kSuh9brFF2KGA9-gO4kMxhWs/s400/10C-3.jpg" width="400" /></a></div>
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<span style="background: white; font-family: "trebuchet ms" , sans-serif; font-size: 9.5pt;">The control panel
layout is very similar to that “10W Frequency Syntheses SSB” (TBR-130), it has
a crystal box in place of the frequency setting knobs. Inside this
crystal box has 11 crystal sets for 11 channels. The channels setting
knob is directly below the crystal box. In the middle of the control
panel, there is a large dial to set frequency which was showing in a small
window beside the knob. Wait a minute, was it supposes to be a
channel based crystal controlled radio? Actually, this dial is
nothing to do with frequency setting; it is one of two antenna tuning
knobs. The frequency reading just gives operator a starting point in
antenna tuning process. </span><span style="font-family: "helvetica" , sans-serif; font-size: 10pt;"><o:p></o:p></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh9U03Pt7yziLIjp1jqxYENhDicdJYIZP43Un1k6T-jV4eQUkMhFsHw7cRdBTFrQ1CmYipH2yBObqXFQwG24x1PQsih2vvOyMIP7fm0ZrVbtWs-SyZ9CnQekc-7Sqsjb0QuszATbtd-Jyk/s1600/10C-4.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1098" data-original-width="1600" height="273" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh9U03Pt7yziLIjp1jqxYENhDicdJYIZP43Un1k6T-jV4eQUkMhFsHw7cRdBTFrQ1CmYipH2yBObqXFQwG24x1PQsih2vvOyMIP7fm0ZrVbtWs-SyZ9CnQekc-7Sqsjb0QuszATbtd-Jyk/s400/10C-4.jpg" width="400" /></a></div>
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<span style="background: white; font-family: "trebuchet ms" , sans-serif; font-size: 9.5pt;">The operating
procedure is like this: After everything is connected, including battery,
antenna, and handset, you turn the mode switch to CW mode, and the radio on by
turn the volume control knob which is also the power switch and set the
channel. Turn the big dial in the middle to the frequency of your
channel and push down the PTT, and adjust the antenna tuning knob at the very
left to make the meter showing a peak reading, and then adjust the big dial in
the middle a little to a maximum meter reading. Then you are ready
to go in either Voice mode and CW mode.</span><span style="font-family: "helvetica" , sans-serif; font-size: 10pt;"><o:p></o:p></span></div>
<br />Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-1224438592318142220.post-40521106335190822792017-11-18T12:24:00.001-05:002017-11-20T12:23:08.587-05:00Women in PLA Communication Service<div class="separator" style="clear: both; text-align: center;">
<span style="font-family: "arial" , "helvetica" , sans-serif;">Note that is is the correct way to wear standard PLA headset, and it seems that the radios they are using are TBR-134 <span style="background-color: white;"> </span><span style="background-color: white;">frequency agile SSB transceivers. Unless in the west, PLA Army service women typically service in all women unit like communication company attached to division HQ, army group HQ or military region HQ. (courtesy of <i>PLA Pictures</i>)</span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgf2MT6EyYZXVOMXjDvauzgSuXfNjZB8WMu3ZzgZy8753i3I8yH0wBllfO0k_K4uyuXj8KQiQoE6KtzO28cIWKPv0_bJLXVTGgByx6yL2ryD6406Kx_EmYkqSx5sCfUGkltNzbqIUDvdM4/s1600/25272782.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="404" data-original-width="600" height="268" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgf2MT6EyYZXVOMXjDvauzgSuXfNjZB8WMu3ZzgZy8753i3I8yH0wBllfO0k_K4uyuXj8KQiQoE6KtzO28cIWKPv0_bJLXVTGgByx6yL2ryD6406Kx_EmYkqSx5sCfUGkltNzbqIUDvdM4/s400/25272782.jpg" width="400" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj2sfiUo1ZkFR1D2-UWtDgWj8C5Fnmc5hKJIKjNo85dZhXyDM6YunbCchbuLOd-HOYdZgBdVDpOkQ8ZR-JRILsmgy1Y9BcsSdghqyYVS7yhDScCl2Shkn1HYrIJokm0Sngb2YKsnzg98S0/s1600/25272784.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="404" data-original-width="600" height="268" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj2sfiUo1ZkFR1D2-UWtDgWj8C5Fnmc5hKJIKjNo85dZhXyDM6YunbCchbuLOd-HOYdZgBdVDpOkQ8ZR-JRILsmgy1Y9BcsSdghqyYVS7yhDScCl2Shkn1HYrIJokm0Sngb2YKsnzg98S0/s400/25272784.jpg" width="400" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEif6iQ-dqVg-Ar3mfjl7dFdFyQZ5c5Y5V6rXrKbnYB2hzDBCnHgMQJafzWcYrk2Le2FncykdQOqA0lmJdLwGzHqtLr82sGOfOLHnsQrjlNOqlyMY6ChG8TL2i8Pp5GaAh9_S_ZNWSeyhoA/s1600/w01.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="528" data-original-width="831" height="253" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEif6iQ-dqVg-Ar3mfjl7dFdFyQZ5c5Y5V6rXrKbnYB2hzDBCnHgMQJafzWcYrk2Le2FncykdQOqA0lmJdLwGzHqtLr82sGOfOLHnsQrjlNOqlyMY6ChG8TL2i8Pp5GaAh9_S_ZNWSeyhoA/s400/w01.jpg" width="400" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh8G1JH1QsNgTeAfg0gY2pNQhjeQyyB1_xCS0ccL-x2m_kbwDXm5caCsjpl4CgL_wKyObnpxPiItStD-ZLWspTKRzO8VE8_kDLV40MSAb3UYFavT8tfPtp0q10m0CTDENUvXm8MQujJ_nw/s1600/w02.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="529" data-original-width="831" height="253" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh8G1JH1QsNgTeAfg0gY2pNQhjeQyyB1_xCS0ccL-x2m_kbwDXm5caCsjpl4CgL_wKyObnpxPiItStD-ZLWspTKRzO8VE8_kDLV40MSAb3UYFavT8tfPtp0q10m0CTDENUvXm8MQujJ_nw/s400/w02.jpg" width="400" /></a></div>
<br />Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-1224438592318142220.post-17080788180130700372017-11-16T20:30:00.003-05:002018-11-25T19:07:25.139-05:00BWT-119 / TBR-120A General Purpose VHF FM Transceiver<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYo-y8Ms-Hs7jKMvVyYQ0DdJYNVm1UjHW5oSZfA1aWmDWpZpd3HR7haAWH-lI_OOb3N11dNCFBr4B3OGv6cWmnIiaTbNV-YqQxXQaWrBsEIxIUP4954Tu-PUYIXXxgAZkBGF4ynFCyIKg/s1600/120-1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYo-y8Ms-Hs7jKMvVyYQ0DdJYNVm1UjHW5oSZfA1aWmDWpZpd3HR7haAWH-lI_OOb3N11dNCFBr4B3OGv6cWmnIiaTbNV-YqQxXQaWrBsEIxIUP4954Tu-PUYIXXxgAZkBGF4ynFCyIKg/s400/120-1.jpg" width="400" /></a></div>
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<span style="background: white; font-family: "trebuchet ms" , sans-serif; line-height: 115%;">The development of
replacement radio of Type 81 Compact started in 1978, and a general purpose VHF
FM radio (code name 711) was also requested at the same time. There were some arguments on
whether or not to combine SSB and VHF/FM into one machine. A decision was
reached that three models would be developed at the same time. There are BWT133
15W SSB, BWT119 6W general purpose VHF radio, and TBR-122 dual mode radio with
15W SSB and 6W VHF. The development work of BWT119 started in 1977 by Tianjing
Wireless Work, and went to production in 1987 and spread onto several factories. The development work for the other two also
finished in mid 80's and the military adopted the BWT-133 and BWT119, and TBR122
only saw limited deployment. </span><o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDyik4A2JiDHl-C6f-A_zraQ5jNqZW8RWZlF4smjUDRpTSblLogoj_1AVd-FOerar_vviAMl_1bH2iSue38uIG3C9JkiEofhWlT941Fusg0cwUSUInzXwIT_56sBUL-w8K-Nm6WJ7szVI/s1600/120-2.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDyik4A2JiDHl-C6f-A_zraQ5jNqZW8RWZlF4smjUDRpTSblLogoj_1AVd-FOerar_vviAMl_1bH2iSue38uIG3C9JkiEofhWlT941Fusg0cwUSUInzXwIT_56sBUL-w8K-Nm6WJ7szVI/s400/120-2.jpg" width="400" /></a></div>
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<span style="background: white; font-family: "trebuchet ms" , sans-serif; line-height: 115%;">The BWT-119 is the
first general purpose VHF FM radio developed for PLA covering 30 to 80 MHz
frequency range; it is defined as Regiment-Battalion level general purpose
transceiver. It is designed to replace Type 73 (Silicon 2W) shortware HF transceiver,
884 FM transceiver, and even in some cases the 10W SSB in PLA infantry units. It is also used to replace 7 series radio in
artillery units. Mass production started in late 80’s. The formal name should be TBR-120, but I never saw
a single machine labeled like that. It
could be that it was not yet formally adopted by the military at that
time. Soon after it was issued to the
troop, it was reported that the frequency syntheses module was not that
reliable and difficult to repair. An
improved version was introduced in early 90’s with much improved frequency
syntheses module using newer IC chips and redesigned structure. This version is
called TBR-120A. It is the most common
version sees service in PLA.<span style="font-size: 9.5pt;"><o:p></o:p></span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj80cmWSlIMGk-tcTTCZtbeXJL7m2KDmqTF-I3Dje-EozO9X0xUf4twWip1Qkq9QuZxsnCILm914F5cQcextY_XXCUxkByl3ENQ0zHI9OVa5uGOraVeey9zjT6MbqQfqaOwuwQ8TmSJhyQ/s1600/120-3.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj80cmWSlIMGk-tcTTCZtbeXJL7m2KDmqTF-I3Dje-EozO9X0xUf4twWip1Qkq9QuZxsnCILm914F5cQcextY_XXCUxkByl3ENQ0zHI9OVa5uGOraVeey9zjT6MbqQfqaOwuwQ8TmSJhyQ/s400/120-3.jpg" width="400" /></a></div>
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<span style="background: white; font-family: "trebuchet ms" , sans-serif; line-height: 115%;">BWT-119/TBR-120A is a
channel based frequency syntheses VHF/FM back-pack transceiver with a manual
antenna tuner. The unit has two output power
levels, 6W and 1W. With a 2.9 meter
antenna and 6W output, the typical communication distance over a flat terrain
is 10~30 km. It also has a squelch mode, a nice feature lacks in most of older
PLA radios. With an external device,
BTR-120A could achieve secured digital communication. It weight 5.5 kg. It is water proof and could float on
water. It could also be used as a wired field telephone if so desired.</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhL8hOSJZBlK45lqwtkA_MsNmmFVnTHFEKe6a_9G8XpPd5DO6eUMDOxH-kvu3EejaCr9CvU5JDxUeHkvaR5KGyBcUy65OzEpspwC3xf7IaFwCQYJ_8c76XN3fLS7vnJ2HwLsQUg3aSFL7s/s1600/120-4.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="909" data-original-width="1600" height="226" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhL8hOSJZBlK45lqwtkA_MsNmmFVnTHFEKe6a_9G8XpPd5DO6eUMDOxH-kvu3EejaCr9CvU5JDxUeHkvaR5KGyBcUy65OzEpspwC3xf7IaFwCQYJ_8c76XN3fLS7vnJ2HwLsQUg3aSFL7s/s400/120-4.jpg" width="400" /></a></div>
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<span style="background-color: white; font-family: "trebuchet ms" , sans-serif;">TBR-120A along with
BWT-119 is still the main Regiment-Battalion level general purpose transceiver
in PLA infantry units, but is being replaced by TBR-121C frequency agile IP
address based networking capable transceiver.</span><span style="background-color: white; font-family: "trebuchet ms" , sans-serif;"> </span><span style="background-color: white; font-family: "trebuchet ms" , sans-serif;">Recently a large number of retired
TBR-120A/BWT-119 is offered in surplus market.</span><br />
<span style="background-color: white; font-family: "trebuchet ms" , sans-serif; font-size: 9.5pt;"><br /></span>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiXaR3yjhdaccTOUaVbujkHZrNVjb9upMghhn2xeIIhSXaeoxKJCTl4s40ABFZjsP-wjUgEeZqkJh7u2ew_4hoJNV313KeH8NY-vHjqGUlO2hABtQmda5Ca-j3k45hyphenhyphenEIPQSTkTSUtND20/s1600/120-5.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiXaR3yjhdaccTOUaVbujkHZrNVjb9upMghhn2xeIIhSXaeoxKJCTl4s40ABFZjsP-wjUgEeZqkJh7u2ew_4hoJNV313KeH8NY-vHjqGUlO2hABtQmda5Ca-j3k45hyphenhyphenEIPQSTkTSUtND20/s400/120-5.jpg" width="400" /></a></div>
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<span style="font-family: "arial" , "helvetica" , sans-serif;">Technical data:</span><br />
<ul>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;">Frequency range: 30.00 – 79.975 MHz</span></li>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;"><span style="background: white; line-height: 115%;">T</span>ransmit type: FM</span></li>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;">Channel spacing: 25 KHz</span></li>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;">Output power: 6 W on high and 1 W on low output</span></li>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;">Antenna: </span></li>
<ul>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;">1.5 meter wipe antenna</span></li>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;">2.9 meter wipe antenna (1.5 meter antenna plus 6 extension
sections)</span></li>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;">40 meter wire
directional antenna.</span></li>
</ul>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;">Power supply: 24V non-rechargeable or rechargeable unit battery, or 24V
external power supply</span></li>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;">Weight: 5.5 kg without battery,
antenna, and handset/handset.</span></li>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;">Dimensions: 29cm x 10.5cm x 31cm</span></li>
</ul>
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<o:p></o:p><br /></div>
<br />Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-1224438592318142220.post-56668611527141399902017-11-12T10:02:00.000-05:002017-11-17T11:06:15.471-05:00Early and late production 884<div class="separator" style="clear: both; text-align: center;">
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEimXF68Gn4URH3BfJifESdekKC0B-klMkssGDSnU4hUvGsnxcB0zlciqSMMTj-hxbwFcytthenk1R03NdT2c1_LJ5f_v4VZLZphE8DDd5N_F4rz4FJIcw5rkvor-xdTEmg2ljUAQsPmyUg/s1600/884-02.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="616" data-original-width="700" height="281" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEimXF68Gn4URH3BfJifESdekKC0B-klMkssGDSnU4hUvGsnxcB0zlciqSMMTj-hxbwFcytthenk1R03NdT2c1_LJ5f_v4VZLZphE8DDd5N_F4rz4FJIcw5rkvor-xdTEmg2ljUAQsPmyUg/s320/884-02.jpg" width="320" /></a></div>
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I have two 884, one is a very early production and one is a
late production sample. It is
interesting to see some minor differences between these two samples. Please note they are the same production
version or mod, just made in different time.
The receiving of late production sample is much more sensitive than the
early production sample.<o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgZwR3eDjuwcN9FtI7vLDuwzwOMwhc_XwM_pG2XqKi3642d_Qhu4EaIOEuhXl19wcZofzHTRCNkxGNVr3bS79IN4lt9plQPlOzWcBvreWwpzsoSs8GvXXLlUkM4Zo0pImtB91C86lXGhpI/s1600/884-01.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="576" data-original-width="700" height="263" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgZwR3eDjuwcN9FtI7vLDuwzwOMwhc_XwM_pG2XqKi3642d_Qhu4EaIOEuhXl19wcZofzHTRCNkxGNVr3bS79IN4lt9plQPlOzWcBvreWwpzsoSs8GvXXLlUkM4Zo0pImtB91C86lXGhpI/s320/884-01.jpg" width="320" /></a></div>
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<o:p></o:p></div>
<ul>
<li>The overall paint color is different, the early production one is more of olive color.</li>
<li>
<div class="MsoNormal">
The carry harnesses are little different. Here the dark olive one is later production sample.</div>
</li>
<li><div class="MsoNormal">
The control knobs are different.</div>
</li>
<li><div class="MsoNormal">
Antenna is different. The early antenna is made by all metal, the fish bones are replaced by plastic ones in late production sample.</div>
</li>
</ul>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj1gZYjJVVEt_MDsAin6l59SWfPHWTnLWqLpr2OntBYmSSsxAsxZ7sXHqh1pe6buS-c8yWguX3VmuhlBfnwDk68-qjat3xUAFTYLu_jIfl6nrEexDGkz-ojZW7qsDu_MuGe0mFbPeUsI7U/s1600/884-03.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="697" data-original-width="700" height="318" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj1gZYjJVVEt_MDsAin6l59SWfPHWTnLWqLpr2OntBYmSSsxAsxZ7sXHqh1pe6buS-c8yWguX3VmuhlBfnwDk68-qjat3xUAFTYLu_jIfl6nrEexDGkz-ojZW7qsDu_MuGe0mFbPeUsI7U/s320/884-03.jpg" width="320" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj0DXVW5msBfi03ts38kSHEDb1doMbUsHeAauKjF88g0eJt1SyAZNIpqaVhDR55_OymNSWISFeiVmGb_VPpSD65nWO_pND_NcMf_JXcqdeNl3VBJQwuXKQMoK_z2MCUp1hqtk3p0XfZIcE/s1600/884-04.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="491" data-original-width="700" height="224" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj0DXVW5msBfi03ts38kSHEDb1doMbUsHeAauKjF88g0eJt1SyAZNIpqaVhDR55_OymNSWISFeiVmGb_VPpSD65nWO_pND_NcMf_JXcqdeNl3VBJQwuXKQMoK_z2MCUp1hqtk3p0XfZIcE/s320/884-04.jpg" width="320" /></a></div>
<br />Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-1224438592318142220.post-77104489457680493012017-11-11T20:05:00.003-05:002017-11-17T11:06:41.160-05:00272, a smaller version of 861A Infantry Transceiver<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEibGIwdh-1xaWsfeBw7mo19w6XeLbzR-dIWctlTN_DBMAZNmwuuqHep6FiaqmGEzBmigQORikL3uSTzUQoiHLRhC_0EJkCQNlDi4drWfkfMsbTmBF2x3dPoDIv0nEtfGY4pKCxiVB8-eYM/s1600/2-1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEibGIwdh-1xaWsfeBw7mo19w6XeLbzR-dIWctlTN_DBMAZNmwuuqHep6FiaqmGEzBmigQORikL3uSTzUQoiHLRhC_0EJkCQNlDi4drWfkfMsbTmBF2x3dPoDIv0nEtfGY4pKCxiVB8-eYM/s400/2-1.jpg" width="400" /></a></div>
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The Type 861/861A Company-Platoon Level Transceivers saw
large scale actions during Sino-Vietnam border conflict between 1984 and 1989.
The only issue come out of the feedback from the troop is that it lacks squelch
mode. This makes the operation of this radio not only a very tiring business
but also decreasing environment awareness for the operator. In mid 80's,
requirements for lighter and better replacement of 861 were given. One of the results is a much improved version
of the 861A transceiver, code name 272.
It is much smaller and lighter radio; it uses the same antennas and
headset as that of 861. Most important
of all, squelch mode is added. It is
basically a smaller version of 861, plus squelch mode.<o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGAxavYYPYJNeMKWwqu0Z8PRWMNVbmvShpujkYY6YeOtHHzk2Z34rSA30K3NnUkTL6yiqBNKqV2Qd_LMP-5OLtxt5vGsDmqTYaM637XtrVs2ZYiPSHRbpUp3ypnnmVsMPEw67r3Lpb7lY/s1600/2-2.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGAxavYYPYJNeMKWwqu0Z8PRWMNVbmvShpujkYY6YeOtHHzk2Z34rSA30K3NnUkTL6yiqBNKqV2Qd_LMP-5OLtxt5vGsDmqTYaM637XtrVs2ZYiPSHRbpUp3ypnnmVsMPEw67r3Lpb7lY/s400/2-2.jpg" width="400" /></a></div>
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A small number of 272 transceivers were sent to troop for
trial but never adopted by the military since it had a much better radio in
mind, the TBR-115. <o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi9yfmEB2xO0Mvr_RIeblswzHf9R36Z3qJXJTJMoC7RjiV2322t1m54zAQA7ytt0ELUxYz_n0SK-01WR5I_F59QP11GjIum4oN67F8mMXt9ddh847NgveqT_xil3Tq6MD6D7kjxk9VBi4Q/s1600/2-3.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi9yfmEB2xO0Mvr_RIeblswzHf9R36Z3qJXJTJMoC7RjiV2322t1m54zAQA7ytt0ELUxYz_n0SK-01WR5I_F59QP11GjIum4oN67F8mMXt9ddh847NgveqT_xil3Tq6MD6D7kjxk9VBi4Q/s400/2-3.jpg" width="400" /></a></div>
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Basically no information could be found in internet for this
radio. Not until recently, I got this radio
code name correct after having two of them for almost 10 years. Nowadays, 272 is not a common item among
collectors, and sales for high price for such a small and simple radio.<o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjRChG1_1s4bsuFYzfc09Y3KWf4Zq2G1QSFfr7xXJ1F-y8adJNqs173dGHon01l4Mn04kxfgBgwtc1OaKeT_atYPmrlohTypUEDLoYmtGrwVs_BEK5fgi4AGyaYrj9hPzLO3jArpXaI72g/s1600/2-4.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjRChG1_1s4bsuFYzfc09Y3KWf4Zq2G1QSFfr7xXJ1F-y8adJNqs173dGHon01l4Mn04kxfgBgwtc1OaKeT_atYPmrlohTypUEDLoYmtGrwVs_BEK5fgi4AGyaYrj9hPzLO3jArpXaI72g/s400/2-4.jpg" width="400" /></a></div>
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<span style="text-align: left;">Technical data:</span></div>
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<ol>
<li style="text-align: left;">VHF/FM
transceiver with 11 channels (49.1, 49.2, 49.3, 49.4, 49.5, 49.5, 49.6, 49.7,
49.8, 49.9, 50.0 and 50.1 MHz) controlled by crystals. </li>
<li style="text-align: left;">0.3W
output</li>
<li style="text-align: left;">Should be
powered by a 15V battery (I never see one), or 10 1.2V AA rechargeable battery
pack.</li>
<li style="text-align: left;">Using 0.48
meter whip antenna, it has a range of no less than 1 Km in a normal flat battle
field condition.</li>
<li style="text-align: left;">It also
could use a 10.5 meter wire antenna to improve its range.</li>
<li style="text-align: left;">The
earphone and microphone are built into a hat and connect to a small power
switch/control box and then connect to the radio body. The 272 does not have a
volume control knob on its body, a simple high/low two-level volume control
switch is built into the headset control box.</li>
<li style="text-align: left;">The 272
also has a simple telegraph key on top of the radio body for operating in CW
mode.</li>
<li style="text-align: left;">It Weights ~600 g without battery, antenna, and headset.</li>
<li style="text-align: left;">The radio
body measures 18 cm x 10 cm x 4.5 cm.</li>
</ol>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj9MR5XrdwlCrGZ2CQIbJLUgbVRy-J-DRwrc2vytYPhezK8_wmwu9PvMoBmKIl_QSUKMzR13TP4nnAFtuP6-fdXxwVK2CEJRvbh5GCTbsdaIosUBt5WxmF6xgEdio2d2PCCSG6W8DyG2Xg/s1600/2-5.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1600" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj9MR5XrdwlCrGZ2CQIbJLUgbVRy-J-DRwrc2vytYPhezK8_wmwu9PvMoBmKIl_QSUKMzR13TP4nnAFtuP6-fdXxwVK2CEJRvbh5GCTbsdaIosUBt5WxmF6xgEdio2d2PCCSG6W8DyG2Xg/s400/2-5.jpg" width="400" /></a></div>
<br />Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-1224438592318142220.post-83631156106288376942017-11-06T16:35:00.003-05:002020-09-16T09:37:26.024-04:00My Radio CollectionsThis list shows my Chinese military radio collections ordered by received date. This list will be updated as new collections coming in.<br />
<br />
<ol>
<li><a href="http://chinesemilitaryradio.blogspot.com/2007/11/884-vhf-fm-backpack.html"><span style="color: #bb3300;">884 VHF FM transceiver </span></a>(8/2006)</li>
<li>Type Eight One SW transmitter (9/2006)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2008/10/type-139-short-wave-field-portable.html"><span style="color: #bb3300;">139 HF receiver </span></a>(9/2006)</li>
<li><a href="https://chinesemilitaryradio.blogspot.com/2017/11/early-and-late-production-884.html">Later production 884</a> (10/2006)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2008/11/708b-vhf-fm-backpack-transceiver.html"><span style="color: #bb3300;">708B VHF FM transceiver </span></a>(11/2006)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2008/10/silicon-two-watt-short-wave-transceiver.html"><span style="color: #bb3300;">Silicon 2W SW transceiver </span></a>(11/2006)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2010/04/type-823-paratrooper-company-platoon.html"><span style="color: #bb3300;">823 paratroop direction finding VHF transceiver</span></a> (12/2006)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2010/03/862-gunners-radio-transceiver.html"><span style="color: #bb3300;">862A artillery command VHF transceiver</span></a> (12/2006)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2008/10/type-eight-one-compact-division.html"><span style="color: #bb3300;">Type 81 Compact 15W SW transceiver </span></a>(01/2007)</li>
<li>Type 65 hand crank power generator (2/2007)</li>
<li>339 HF receiver (7/2007)</li>
<li>SEM52A VHF transceiver/German (10/2007)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2007/11/type-7512-hf-receiver.html"><span style="color: #bb3300;">7512 HF receiver </span></a>(10/2007)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2009/10/tbr-115-compact-vhf-transceiver.html"><span style="color: #bb3300;">TBR-115 VHF transceiver </span></a>(10/2007)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2008/10/type-861-infantry-company-platoon-level.html"><span style="color: #bb3300;">861A VHF transceiver </span></a>(10/2007)</li>
<li>116 150W SW transmitter (11/2007)</li>
<li>239-1 HF receiver (11/2007)</li>
<li><a href="https://chinesemilitaryradio.blogspot.com/2017/11/272-much-improved-861a-infantry.html">272 VHF transceivers</a> (2, 12/2007)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2009/10/tbr-142-i-artillery-vhf-transceiver.html"><span style="color: #bb3300;">TBR-142 VHF transceiver </span></a>(4/2008)</li>
<li><a href="https://chinesemilitaryradio.blogspot.com/2018/10/tbr001-squad-leader-radio.html">TBR-001 Squad Leader VHF transceiver</a> (5/2008)</li>
<li><a href="https://chinesemilitaryradio.blogspot.com/2018/11/tbr001a-squad-leader-vhf-fm-transceiver.html">TBR-001A Squad Leader VHF transceiver</a> (5/2008)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2009/10/tbr-115-compact-vhf-transceiver.html"><span style="color: #bb3300;">TBR-115 VHF transceiver </span></a>(second, 5/2008)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2008/10/type-861-infantry-company-platoon-level.html"><span style="color: #bb3300;">861 VHF transceiver</span></a>(6/2008)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2010/04/type-823-paratrooper-company-platoon.html"><span style="color: #bb3300;">Paratroop direction finding VHF transceiver <second></second></span></a> (second, 6/2008)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2008/06/early-gunners-radio-transceiver.html"><span style="color: #bb3300;">Artillery command transceivers early</span></a> (6/2008)</li>
<li><a href="https://chinesemilitaryradio.blogspot.com/2017/12/a211b-tube-fm-transceiver.html">A211B VHF transceiver</a> (6/2008)</li>
<li><a href="https://chinesemilitaryradio.blogspot.com/2017/11/it-is-still-working.html">10W Crystal Controlled SSB transceiver</a> (11/2008)</li>
<li>PRC-10 (11/2008)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2009/11/7011-tbr-111-vhf-transceiver.html"><span style="color: #bb3300;">7011 VHF transceiver</span></a> (11/2008)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2009/12/10-watt-frequency-syntheses-ssb.html"><span style="color: #bb3300;">10 W Synthesised SSB transceiver </span></a>(12/2008)</li>
<li>139A HF receiver (Sealed, 10/2009)</li>
<li><a href="https://chinesemilitaryradio.blogspot.com/2018/11/the-826-vhf-fm-paratroopers-direction.html">826 VHF receiver</a> (10/2009)</li>
<li><a href="https://chinesemilitaryradio.blogspot.com/2018/11/when-chinese-troops-step-into-korean.html">702D AM Transceiver</a> (10/2009)</li>
<li><a href="http://chinesemilitaryradio.blogspot.com/2010/02/bwt-133-15w-ssb-transceiver-tbr-131.html"><span style="color: #bb3300;">BWT-133 SSB transceiver</span></a> (11/2009)</li>
<li>Type 77 HF receiver (4/2010)</li>
<li><a href="https://chinesemilitaryradio.blogspot.com/2017/11/bwt-119-tbr-120a-general-purpose-vhf-fm.html">TBR-120A VHF Transceiver</a> (7/2011)</li>
<li>BBT-603A VHF Transceiver (7/2011)</li>
<li><a href="https://chinesemilitaryradio.blogspot.com/2019/09/5-watts-border-patrol-shortwave-ssb.html">5W Patrol SW Transceiver</a> (4/2015)</li>
<li><a href="https://chinesemilitaryradio.blogspot.com/2018/11/139-with-chairman-maos-quotation.html">139 tube Shortwave Receiver, early</a><span style="color: #bb3300;"> </span>(12/2017)</li>
<li><a href="https://chinesemilitaryradio.blogspot.com/2018/11/tbr002-squad-leader-vhf-fm-transceiver.html">TBR-002 Squad Leader VHF transceiver</a> (5/2018)</li>
<li><a href="https://chinesemilitaryradio.blogspot.com/2018/12/tbr-142-artillery-communication-system.html">TBR-142 VHF Gunner's Communication Unit</a> (5/2018)</li>
<li><a href="https://chinesemilitaryradio.blogspot.com/2018/11/bws-1-vhf-fm-receiver.html">BWS-1 VHF Receiver (B)</a> (6/2018)</li>
</ol>
Unknownnoreply@blogger.comtag:blogger.com,1999:blog-1224438592318142220.post-71261677042626669582010-04-19T00:57:00.003-04:002017-11-17T11:06:57.014-05:00Type 823 Paratrooper Company-Platoon Level Direction-Finding Compact Transceiver<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWvpAfFO6EyPLLehAuTKH4xCHGBoMrwjL_mHdjrfNkxDuqZNZoAwctN5JNduGm6beSuQryq2mJT85QpR71yY4aylevfoFmci_vQ0eO53kPABRykuglSBF6D2PGE_9lPCC_r1o8b2rA_gI/s1600/823-01.jpg"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5461708492748424706" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWvpAfFO6EyPLLehAuTKH4xCHGBoMrwjL_mHdjrfNkxDuqZNZoAwctN5JNduGm6beSuQryq2mJT85QpR71yY4aylevfoFmci_vQ0eO53kPABRykuglSBF6D2PGE_9lPCC_r1o8b2rA_gI/s400/823-01.jpg" style="cursor: hand; cursor: pointer; display: block; height: 400px; margin: 0px auto 10px; text-align: center; width: 300px;" /></a><br />
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Type 823 Paratroop Company-Platoon Level Direction-Finding Compact Transceiver was developed at the same time as that of the Type 861 transceiver, and it is based on Type 861 with additional direction finding feature. It was certified around 1979. Now it is long retired from PLA paratroop units.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgskGrRgaFeJ6tD16J-1JYOBx9jd_wpIU6MTuTLZjSHtZ1LtZ3zYT7To4XM26425PoYp4hkXieinOJxnSimRMjrhwe9ujJ5NrvZ3k2MNp7kSHkpU8zabeKWLVXw6KD8XRfISZ8cqIsFGA0/s1600/823-02.jpg"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5461708582926882578" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgskGrRgaFeJ6tD16J-1JYOBx9jd_wpIU6MTuTLZjSHtZ1LtZ3zYT7To4XM26425PoYp4hkXieinOJxnSimRMjrhwe9ujJ5NrvZ3k2MNp7kSHkpU8zabeKWLVXw6KD8XRfISZ8cqIsFGA0/s400/823-02.jpg" style="cursor: hand; cursor: pointer; display: block; height: 400px; margin: 0px auto 10px; text-align: center; width: 282px;" /></a><br />
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This paratrooper’s radio is designed to be carried by company/platoon commanders and their team leaders. When the commander is landed, he would turn on his radio in a direct finding mode. The radio will transmit a beeping signal as long as the transition button is pushed. The unit’s team leaders would turn on the radio and find the direction of the commander’s beeping signal and act accordingly.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiKen8Ap2M2njXNePjdEWNlJVUnQynBeUloZI1fAXHVfjuuPj62fEJ-0cSP65G6-mk2-xKf93KtvLtBPqNFo3orRLqprLFk9GlmoBkiVJLWWKCvCaJIVc1LesUpte0Va-ktBEnl7_iZ1xI/s1600/823-03.jpg"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5461708682536358930" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiKen8Ap2M2njXNePjdEWNlJVUnQynBeUloZI1fAXHVfjuuPj62fEJ-0cSP65G6-mk2-xKf93KtvLtBPqNFo3orRLqprLFk9GlmoBkiVJLWWKCvCaJIVc1LesUpte0Va-ktBEnl7_iZ1xI/s400/823-03.jpg" style="cursor: hand; cursor: pointer; display: block; height: 161px; margin: 0px auto 10px; text-align: center; width: 400px;" /></a><br />
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The radio is light weighted, only about 2.5 kg with antenna, battery and headset. It is measured 180x210x56 mm. It has 11 channels from 49 to 50 MHz with channel space of 100 KHz controlled by crystals. It requires no search and no fine tune, so it could be operated by anyone with minimum training. It also use early generation of IC chips as of Type 861. It is basically the same radio with higher output power and additional direction finding feature. <br />
<br />
The radio’s power output is about 0.5W. Using 0.86 meter whip antenna, it has a range of no less than 2 Km in a normal flat battle field condition. The earphone and microphone are built into a hat and connect to a small power switch/control box and then connect to the radio body, the same one for Type 861. Unlike 861, 823 radio does not have a CW mode, and it has a volume control in addition to the high/low two-level volume control switch built into the headset control box. Addition to the channel switch, 823 has an operation mode switch, voice mode and direction –finding mode.<br />
<br />
The radio is powered by a 13V Type 861 alkaline unit battery. With a 1:3 transmitting/receive ratio, the unit battery could last 6 hours. A battery holder, which holding 20 AA size batteries, is also supplied in case that unit battery is not available. I have two 823 radios, one was made in 1984 and the other one was made in 1985. <br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgQyCECr3jesqVedZm4eUtMyDpkhhPrXU7EDtacqoFhnD55HOuKPCjSErGRThLSCaFYGDLzfcxa7geJerp6FAxImHSe1ut3z4V8qCWpHorSxuEAwylMHEtmrzzPGHekPS5VLKi6eZr16Ww/s1600/823-04.jpg"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5461709953925618066" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgQyCECr3jesqVedZm4eUtMyDpkhhPrXU7EDtacqoFhnD55HOuKPCjSErGRThLSCaFYGDLzfcxa7geJerp6FAxImHSe1ut3z4V8qCWpHorSxuEAwylMHEtmrzzPGHekPS5VLKi6eZr16Ww/s400/823-04.jpg" style="cursor: hand; cursor: pointer; display: block; height: 400px; margin: 0px auto 10px; text-align: center; width: 343px;" /></a><br />
<br />
To find the commander’s signal direction, operator first finds the signal’s rough direct in voice mode with the whip antenna. When the radio is within 1 Km of the signal source, operator would switch to direction-finding mode and take off the whip antenna from radio body. At this time, the radio would use a bipolar antenna built inside the radio body to find the exact direction of the signal source. <br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi5EsqU39sKwrPy4OoYLunResXtZJxnAEoMY90ICuNY0Jc3lo-ybu6O9H_sxrsy5J_HNo1d9o6QdRV0Qj2Pu1V71CGF_dK-0WB3XFa2petJ573Ys4w4qc8M8W22NJ_eIN7CNKpUKsEsPbM/s1600/823-05.jpg"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5461710096538898770" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi5EsqU39sKwrPy4OoYLunResXtZJxnAEoMY90ICuNY0Jc3lo-ybu6O9H_sxrsy5J_HNo1d9o6QdRV0Qj2Pu1V71CGF_dK-0WB3XFa2petJ573Ys4w4qc8M8W22NJ_eIN7CNKpUKsEsPbM/s400/823-05.jpg" style="cursor: hand; cursor: pointer; display: block; height: 322px; margin: 0px auto 10px; text-align: center; width: 400px;" /></a><br />
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As of 861, lacking a squelch mode is the biggest issue for the operator. Other than that it is a neat little radio which is retired from PLA paratroop units in early 90’s; and replaced by 870 series direction-finding radio, or TBR-115:)Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-1224438592318142220.post-52927606650760203892010-03-31T12:09:00.007-04:002017-11-17T11:07:10.149-05:00862 Gunner’s Radio Transceiver<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhU8lRtwvNZzpM7oeIVnGGQ1B57YQh3xoMLCFOAHEBbX0bF_bkff_mC1BbySRiIQfqbaAAzFXgZgy7g11RS_yGXeNG9OkEYXMaT1uKh_R0Y2yzU03h3jCPfhCOZVJnC9dDmYDomp0XAGDQ/s1600/862-01.jpg"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5454831279536262402" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhU8lRtwvNZzpM7oeIVnGGQ1B57YQh3xoMLCFOAHEBbX0bF_bkff_mC1BbySRiIQfqbaAAzFXgZgy7g11RS_yGXeNG9OkEYXMaT1uKh_R0Y2yzU03h3jCPfhCOZVJnC9dDmYDomp0XAGDQ/s400/862-01.jpg" style="cursor: hand; cursor: pointer; display: block; height: 400px; margin: 0px auto 10px; text-align: center; width: 309px;" /></a><br />
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Several years after early gunner’s radio project was cancelled, the project was resumed in mid 70s’. It is the result of continue great pressure from the USSR. To better coordinate the anti-tank guns in the field, China needs better communication equipments other than field telephones. The radio was developing at the same time as that of the 861 radio but with different group. The radio, called 862 gunner’s radio, was certified in late 70s’. An improved version, 862A, was introduced later in early 80s’.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiadn8Iau3Hnik33TkbrgHd00eVP73jaieSrxV-r82jwaGuU4ITCItNz0GEwOuZsc9xv2dMLW1TB4fWz4G-LSQeAtjWQuQkUSgbgWmXgGiqKmFX5wkKOeqNGM8QGyQr_iPFqtCxCVsqa5A/s1600/862-02.jpg"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5454831357641605890" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiadn8Iau3Hnik33TkbrgHd00eVP73jaieSrxV-r82jwaGuU4ITCItNz0GEwOuZsc9xv2dMLW1TB4fWz4G-LSQeAtjWQuQkUSgbgWmXgGiqKmFX5wkKOeqNGM8QGyQr_iPFqtCxCVsqa5A/s400/862-02.jpg" style="cursor: hand; cursor: pointer; display: block; height: 400px; margin: 0px auto 10px; text-align: center; width: 298px;" /></a><br />
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This gunner’s radio transceiver is designed to be carried by artillery gunners, especially the anti-tank gunners. It is light weighted, only about 2.2 kg with antenna, battery and headset. and measured 170x135x55 mm. It has 10 channels (34.25, 34.35, 34.45, 34.55, 34.65 and 34.75 MHz) controlled by six crystals. It requires no search and no fine tune, so it could be operated by anyone with minimum training. It is more or less the same radio as the early gunner’s radio. The only operable switches/knobs are the channel switch and a volume control knob.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEireNG6CsPviIJxwqNrXAP-7Rfnk8GB2iASJDTFnTne4HD00XvoR2CXTDHzNZ5_eFlkllRr0DJuX-HVQKLiF1uYYaW8gpQWUcPryBeBQfa2TRqrk6I7BbFgQMXz8Cy88YyET1i_o8-VdLI/s1600/862-03.jpg"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5454831475681699410" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEireNG6CsPviIJxwqNrXAP-7Rfnk8GB2iASJDTFnTne4HD00XvoR2CXTDHzNZ5_eFlkllRr0DJuX-HVQKLiF1uYYaW8gpQWUcPryBeBQfa2TRqrk6I7BbFgQMXz8Cy88YyET1i_o8-VdLI/s400/862-03.jpg" style="cursor: hand; cursor: pointer; display: block; height: 166px; margin: 0px auto 10px; text-align: center; width: 400px;" /></a><br />
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The radio uses a 0.5 meter whip antenna. An external wire antenna could also be used in place of the 0.5 meter whip antenna. The earphone and microphone are built into a hat and connect to a small power switch control box and then connect to the radio body. Unlike that of 861 serious, there is no volume control built onto the PTT control, instead, there is a volume control knob on top of the radio. Unlike 861, 862 radio does not have a CW mode.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEifuFAc-Y0reyu7DtB9ojdag3NXOxkwCEH_TSLRUk3einKkG1qmSW3u1WB-3aRwBv9SE-f6JeOGQU_BY0VggtpATNh4J_GKXGeWUSkW4UoZdRPOu5R9GzWgqq9V3KhdqeMJd1_44oBT_aQ/s1600/862-04.jpg"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5454831598918020450" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEifuFAc-Y0reyu7DtB9ojdag3NXOxkwCEH_TSLRUk3einKkG1qmSW3u1WB-3aRwBv9SE-f6JeOGQU_BY0VggtpATNh4J_GKXGeWUSkW4UoZdRPOu5R9GzWgqq9V3KhdqeMJd1_44oBT_aQ/s400/862-04.jpg" style="cursor: hand; cursor: pointer; display: block; height: 276px; margin: 0px auto 10px; text-align: center; width: 400px;" /></a><br />
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The radio is powered by a 13V Type 861 alkaline unit battery. With a 1:3 transmitting/receive ratio, the unit battery could last 6 hours. A battery holder, which holding 20 AA size batteries, is also supplied in case that unit battery is not available.<br />
The radio output power is about 0.3W. The stated range is 2.5 km in a flat field. My sample is made in 1983 with a manufactory serial number of 833808.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjFgt2s5Sx5-u6g5fjmTXK9bWJdCCNYpAttoA6FwPvZUMMZfAewzXVM3cbCUyewWsNHQzJOIwXb0bSF5lJE4ZKwF_CqWR1GghTts1FT6IsqT9EKVxZSCUB6RQmQF11r8SOakjXSh9YIVOo/s1600/862-05.jpg"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5454831711801139026" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjFgt2s5Sx5-u6g5fjmTXK9bWJdCCNYpAttoA6FwPvZUMMZfAewzXVM3cbCUyewWsNHQzJOIwXb0bSF5lJE4ZKwF_CqWR1GghTts1FT6IsqT9EKVxZSCUB6RQmQF11r8SOakjXSh9YIVOo/s400/862-05.jpg" style="cursor: hand; cursor: pointer; display: block; height: 307px; margin: 0px auto 10px; text-align: center; width: 400px;" /></a>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-1224438592318142220.post-18307960081188764242010-03-11T13:35:00.006-05:002018-11-02T09:52:12.851-04:00A Brief History on the Development of Chinese Infantry Portable Transceivers (Part Three)VI. Third Generation<br />
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In mid 70s, PLA gave requirements for third generation infantry radios. It has to be light weighted, easy to operate/channel based and reliable. A 10 W SSB device went into development first in mid-70 targeted replacing the Silicon 2 W. However, the development mat its difficulty in late 70’s since manufacturer could not develop a reliable frequency syntheses device. A stop gap transceiver was introduced, crystal controlled version of 10W SSB transceiver (with an industry name of D2), in late 70s. This radio saw action in Sino-Vietnam boarder conflict in 80s, but never saw large scale deployment in the troops.<br />
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Finally, in mid 80, reliable frequency syntheses device was produced and 10W frequency syntheses SSB transceiver was sent to troop and also saw later stage of Sino-Vietnam border conflict in 80s. The former code name is TBR-130 and the industry name is D2A. The 10 Watt Frequency Syntheses SSB transceiver is designed to replace Silicon 2 Watt and in some cases 81 Compact transceivers in infantry units. A 15W scale up version, D2B, was introduced later to compete with BWT-133, but failed.<br />
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Later than that of 10 Watt Frequency Syntheses SSB, development of replacement radio of Type 81 Compact started in 1978, and a general purpose VHF FM radio was also requested in the same time. There were some arguments on whether or not to combine SSB and VHF into one machine. A decision was reached that three models would be developed at the same time. There are BWT133 15W SSB, BWT119 6W general purpose VHF radio, and TBR-122 dual mode radio with 15W SSB and 6W VHF. The development works finished in mid 80s and the military adopted the BWT-133 and BWT119, and TBR122 only saw limited deployment. The military code name for BWT-133 and BWT-119 are TBR-131 and TBR-120 accordingly.<br />
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TBR-131/BWT-133 is the major Division-Regiment level short ware SSB radio starting in 90s replacing all Type 81 Compact radios. BWT-119/TBR-120 is the first general purpose VHF radio replacing 884, 7 series and, in some cases, 861/862/7011 radios.<br />
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TBR-115 Company-Platoon level Compact VHF transceiver is a result of Sino-American technology transfer taken place in early 80s during so-called “Honeymoon” period. It is modeled after American AN/PRC-139 and is designed to equip battalion-company-platoon level commanding personal in infantry, artillery, airborne and marine units, replacing 861(A), 862(A), 823, 7011 transceivers and other similar radios. It also could communicate with 861, 823, 884, and other transceiver working within its frequency range. With the technology transfer, design work was started in mid 80s and the machine was certified in early 90s, likely in 1992. An all domestic components version was introduced later as TBR-116. TBR 115 and 116 have exactly the same externals but with redesigned circuit based on domestic produced microprocessor and other IC chips.<br />
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TBR-142 artillery communication system was developed in 90s and it contains three major devices, TBR-142(I) VHF transceiver, TBR-142(II) control device and TBR-142(IIID) multi-function field telephone. It is designed to replace 862 radio and equip the artillery front line observation post, individual artillery squad. It could achieve voice or date communicate wired or wireless between command center, observation posts and artillery units within 20Km.<br />
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TBR-001 is PLA’s first squad level transceiver developed in 90s. Before TBR-001, there are only receivers (804, 826 and etc) designed to equip in squad level. However, its relative short range (less than 1km) limits its deployment. An improved version TBR-001A was introduced later in 90s with additional feature like speaks, however, it still did not get large scale deployment.<br />
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870 paratrooper’s radio series was developed in late 90 to replace 823 radio and 826 receiver. The series contains 870 paratrooper’s transceiver, 871 receiver, 872 signal transmitter and 873 direction locator. An improved series was introduced in late 90s. The 872 signal transmitter is a small device. Once turn on, it transmits a coded signal until it is turned off. It could not only be used by the leaders to gather their troops but also could be used to locate the heavy equipment dropped separately. The 873 direction locator is a small handhold device to locate the 872 transmitter. The 871 receiver equips every paratrooper, and it is a two-piece device mounted on paratrooper’s helmet.<br />
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In 80s and 90s, we saw large number (in term of different models) of radio equipment coming out of Chinese electronic industry; however, few was adopted by the military. You could see some fancy toys in newspaper and magazine, but most of them are just in trial. In this period, 10 W SSB, BWT133/TBR131, BWT-119/TBR-120, and TBR-115 are the mainstream man-pack radios in PLA infantry.<br />
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VII. Beyond<br />
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When history turned away from 80s, it marked the beginning of a new era. We saw a series of incidents. The 89 incident marked the end of military cooperation between China and the West. The technical assistant from the West is stopped and Russian technology started to flow in, however, in term of field portable wireless technology, Russian is not ahead of China too much. China is on herself once again. The Gulf War in 1990 really shocked the leadership of Chinese military and China Started to emphasize on technology. The US bombing on Chinese embassy in Belgrade in May 1999 made Chinese leadership realized that an armed conflict with US is not unlikely. Money started to pour into military R&D after the bombing. Some of the R&D institutes and manufactures started 611 work schedules (6 days a week, 11 hours per day). The result of it started to show up recently.<br />
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TBR-121 VHF transceiver, TBR-133 5W and TBR-134 20W SSB transceiver appeared around 2000, they replace BWT-119/TBR-120, TBR-130 and BWT-133/TBR-131 series accordingly. They are characterized by full digital data, self-adaptive control (including automatic antenna tuner) and frequency agile. In 2004, TBR-121C won a national award for its break though in wireless communication technology. It was reported that it had IP based wireless networking capabilities and is on par with US SINCGARS ASIP.<br />
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After 60 years, China is finally catching up with the world in term of field tactical portable transceiver. In recent years, the development scale of Chinese military technology is unseen in history, driven by military press from the US and backed by economic and technology boom. Don’t be surprise that there will be more and more new fancy toys coming out of Chinese military manufactures in the near future.<br />
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(March 2010)Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-1224438592318142220.post-60275212717161934962010-03-01T13:49:00.001-05:002018-11-02T09:53:00.287-04:00A Brief History on the Development of Chinese Infantry Portable Transceivers (Part Two)IV. Second Generation<br />
In early 60s, due to the development of transistor technology, the request to make the portable transceiver smaller and lighter could be materialized. The first such radio is Type Eight One Compact which means smaller version of Type Eight One. The development was started in early 60’s. Due to lack of reliable out power amplifier transistor, the receiver part was release first as 139A SW receiver in early 60s (an all silicon version of 139A was introduced later as 139B). In 1966, the new radio started to appear in PLA for trial use. Its size and weight were only half of that of Type Eight One.<br />
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The feedback from the troop was mixed. Troops welcomed this much smaller and lighter radio; however, this radio faced a list of technical problems. On top of the list was that the transistor in transmitting amplifier stag was very easy to get fried. To solve this long list of issues, manufacturer had been working on improved versions for 10 years. In early 70s, The Type Eight One Compact (A) is certified. The amplifier transistor issue was still exists. Starting from March 1972, a campaign was launched included a number of manufactures and research institutes, this problem was finally resolved after 6 months of intensive R&D. Then Eight One Compact (B) was certified in May 1973. The B version is the mostly produced version in Eight One Compact series, and most of the issues are basically resolved, but not completely until Eight One Compact (C) was introduced in late 70s.<br />
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The development of transistor version of Regiment-Battalion Level transceiver was started later than that of Type Eight One Compact; however, it matured in 1969 much earlier than that of Type Eight One Compact. Unless Type Eight One Compact, it used all silicon transistors from the beginning. That is why it got a name of Silicon Two Watt. In early 1970, the production of Silicon 2 W had spread to 14 manufactures nation wide. It was finally certified by military in May 1973 as Type 73 Regiment-Battalion Level Short Wave transceiver. Unless that of Type Eight One Compact, Silicon Two Watt has only one improved version introduced in mid 70s.<br />
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7 series VHF FM backpacks were developed in late 60s to replace the heavy A series VHF FM backpacks. They are second generation VHF backpack radios developed 100% by China. They use all silicon transistors and much lighter and smaller than A series, and use much less power. However basic functionalities remain the same as A series. It has four radios, 705, 708, 709 and 714 to cover different frequency range. Development started in late 60s; production started in early 70s. They were certified by military in 1973. Improved A, B and C versions were introduced later in mid 70s.<br />
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884 VHF FM Battalion-Company level transceiver was developed in late 60s, and certified in 1972. It is the all transistor version of 883 radio. Unless other radios developed at this period, 884 radio does not have any improved version introduced during its entire service life. 884 radios were supplied to Vietcom in large quantity in early 70’s even before that of Chinese army.<br />
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In early 60s, an all transistor receiver was introduced as 239 SW receiver. It has much better sensitivity, selectivity and much wider frequency range than 139A/B receiver. A much improved all silicon transistor version was introduced in late 60 as 339 receiver. Production of 339 receiver had been continued until early 80s, and it is still widely used by HAM nowadays.<br />
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In this period, Type Eight One Compact, Silicon Two Watt transceivers plus 884, 7 series VHF FM transceivers formed the backbone of PLA infantry field portable transceivers. They were widely used by both sides of 1979 border conflict between Vietnam and China, and retired in mid 80’s.<br />
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V. In Between<br />
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All of second generation radio has one or more continuous band(s). This required a dedicated radio operator. In 1968, requirement was given for a light weighted, simple to operate artillery gunner’s radio. Wuhan Wireless Manufacturer create this gunner’s radio in 1971 and samples were sent to troop for trial use. It is light weighted (less than 1kg) and channel based. This project was canceled in 1971 for political and economic reason. The development was resumed in 1973. This time, the project consists three models, Type 861 Company-Platoon Level Transceiver, Type 862 gunner’s radio and Type 823 paratrooper’s direction finding radio. They share a similar features and construction and use early type of IC chips. They all certified in 1979 and 861 radio saw large scale of operation in Sino-Vietnam boarder conflict in 80s. In this series, there are 804 receiver to be used with 861 radio and 826 receiver to be used with 823 radio. However, these two receivers did not see large scale deployment.<br />
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In early 80s, 70 series radio was developed for the infantry reconnaissance units. The series has 7011 transceiver, 7012 direction finding receiver and 7013 sub-compact transceiver. 7013 has a size of a regular cigarette pack, a range of several hundreds meters and only two channels. They also saw operation in Sino-Vietnam boarder conflict in 80s.<br />
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In this period, the radios developed have characters of light weight, channel based and crystal controlled. Some like to put these radios into third generation group, but I like to categorize these as pre-third generation. You could also add 10W crystal-control SSB to this list. Since it is tied too close to the third generation radios, I would like to introduce it in the next chapter.Unknownnoreply@blogger.com0