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MIFlyer

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  • Location
    Merritt Island, FL, USA
  • Interests
    WWII Aircraft<br /><br />Military radios of any era, but especially WWII<br /><br />Armored combat vehicles
  1. If you go over to Archive.org and do a search for TRC-7 you can download a manual for it.
  2. You can buy them at FairRadio.com and also may find them on ebay. Ebay has had some very good prices on the bags I built a rechargable battery pack to fit my two PRC-77's and my PRC-25.
  3. That PL-54 on those headphones is 1/4 inch in diameter but is too short to fit a standard 1/4 jack. You can buy a CD-307 adapter cord from FairRadio.com that will adapt the headphones to a standard 1/4 inch or just buy a JK-26 jack and make your own.
  4. That model of receiver generally was used as an Intermediate Frequency receiver for a UHF converter that was part of a navigation system. The carriers and bases transmitted a signal in the 230 MHZ range and the converter's output was fed into that radio A Morse code signal, for example "A," was sent when the transmitter antenna rotated past due North. 5 degrees later a "B" was sent, and so forth. The pilot received the signal and if it was "A" he knew he was due north of his destination. :
  5. Nice set! But that is not a BC-348-O. That is a BC-348-Q.
  6. I have what I believe is an original BC-620-F. The name tag on it has a plastic cover that was freshened up considerably with an application of Marvel Mystery Oil. I have acquired an original manual and all the required tubes as well. Acquisition of the set was a rare delight. I found it sitting by the road a quarter mile from my house with a sign that said "Free. Take it!"
  7. Cinncinatti Electronics was the original manufacturer. Associated industries would have been the overhaul contractor. I believe that company also took older radios such as the PRC-6 and upgraded them from tubes to solid state. The green color paint used seems to be the same color used by the US Army Depot at Tobyanna during overhauls; I have a couple of PRC-77 cases that came from there in newly overhauled condition. Take a look at Radionerds.com. I have an article there on how to build an adapter to use the nearly identical earlier PRC-10 antennas, which are more easily available and
  8. I have a BC-620. As compared to the BC-659 and the BC-1000, the BC-620 operated on Armor frequencies. Thus, presumably the BC-620 was used by troops scouting for armor units. The BC-620 was tried out as an answer for communicating with tanks during the fighting in the hedgerow (Bocage) country in Normandy. A backpack version was created, and you can imagine what it must have been like walking around with the equivalent of a full sized microwave oven on your back! The interim answer was to put field telephone boxes on the rear of the tanks, hooked into the intercom, so that the troops c
  9. I wonder how much of the failure to develop true FAC capabilities was due to attitude and careerism and how much to technology. I have an SCR-522 - it's a BIG set, and using one in the field would be like carrying around two of today's microwave ovens along with a 1960's TV set. There were huge advantages to using VHF for aircraft comm, but other than strapping an SCR-522 to a jeep there was no way for forward ground units to use it. And of course ground units already had HF sets in use. But the other thing was that airpower theories focused on an independent air force fighting its own
  10. The antennas that fit the PRC-25 and PRC-77 seem to have gotten scarce and expensive. But the nearly identical AT-272A antenna for the PRC-8-9-10 are still available at pretty reasonable prices. I decided to make an adapter to enbale teh AT-272A to be used on teh PRC-25 and 77. I found I could buy 1 inch long pieces of 0.75 in diameter brass rod on ebay, three for $8.30, including shipping. This is exactly the size of rod needed for the adapter. Take one of the pieces of brass rod and drill a small hole, about 1/8 inch diameter or so, through it lengthwise. Then you need to enlar
  11. I used to have one of those. I was not too impressed with it. It uses some relatively hard to get tubes.
  12. An interesting aspect of FAC activities is what occurred in Burma. The earliest close cooperation between air and ground units occurred there, since use of aircraft for both supply and close support was intrinsic to operating behind enemy lines. The USAAF Air Commandos were equipped with P-51A's still fitted with HF SCR-274-N radios. The RAF units had gone over to the SCR-522 VHF set - and thus could not talk to the ground units - and they asserted they had no need to, since they could properly brief their pilots before takeoff. But the P-51A's still had the SCR-274-N, could talk to the gr
  13. I have one of those, as well as a few of the Detrola set that was similar in terms of use but a bit different in design. I do not believe that the terminal strip on the back is original. The original had the phone jack on the front, the antenna jack on the left side and a wire coming out of the back. That's all. The case would short out that terminal strip if installed. Here is little write up i did on those sets: The Cutest Aircraft Radios They Ever Made: The Detrola Model 438 and the BC-1206 In the 1940’s the standard aircraft radio navaid system in the U.S. was the AN Rang
  14. You can download a copy of the SCR-536 BC-611 handi talkie Technical Manual, TM 11-235 at: http://bama.edebris.com/manuals/military/bc611/ Good luck!
  15. The latest FAQ on the CMP website says that they will NOT be selling the 1911's
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