Military Radio WWII Aircraft BC-344-D Receiver Signal Corps US ARMY

Description: Military Radio WWII Aircraft BC-344-D Receiver Signal Corps US ARMY I do not have the power cable for this but I don’t think it’s an uncommon cable so I wasn’t able to test it and even if I had the cable I would be a little leery to plug it in because of its age, I am selling it as for parts are not working because I’m not able to test it that does not mean it doesn’t work it possibly could work or maybe it doesn’t I have no way of knowing but that is how I’m selling it. I did take a lot of pictures of this radio including the inside it looks all intact pretty good shape for its age. Please take a look at all photos message me with any questions. This is a heavy radio Weighing about 56 pounds. Will be shipped FedEx, UPS or USPS. The design of the BC-312, BC-314, BC-342 and the BC-344 receivers came from the U.S. Army Signal Corps in the late-thirties. Two versions operated on +14vdc utilizing an internal dynamotor (the BC-312 and BC-314) while the other two versions (BC-342 and BC-344) operated on 120vac utilizing an internal power supply unit, the RA-20. All versions of these receivers were stoutly built with rugged mechanical gear-driven tuning, robust wiring technique and made use of a steel chassis with extensive LO shielding utilizing a steel metal box. These receivers were built to "take a beating" and still function. While the overall size of the receivers is relatively small the weight is not - around 60 lbs - mainly due to the "all steel" construction of each receiver. Some aluminum is used (like the front panel) but the durability of the receivers is aided by the steel cabinet and chassis. All alignment adjustments have some kind of "tamper-proof" protection in the form of locking nuts, protective shields or plug covers. The BC-312, 314, 342 and 344 series of receivers were used extensively in ground applications from just before WWII up into the 1950s. The most common contractors were Farnsworth Television & Radio Corp. for both AC and DC operated receivers and RCA Manufacturing Co, Inc. for many of the early DC operated receivers. The circuit is a nine-tube superheterodyne (ten tubes in the BC-342 and BC-344 which includes the 5W4 rectifier tube.) Two 6K7 RF amplifiers are used along with a separate 6C5 Local Oscillator and 6L7 Mixer tube. Two 6K7 IF amplifiers, a 6C5 BFO, a 6R7 duplex-diode triode for the Det/AVC/1st AF function and a 6F6 audio output tube complete the tube line up. Frequency coverage is from 1500kc to 18000kc in six tuning ranges for the BC-312 and BC-342. The BC-314 and BC-344 are medium wave receivers and cover 150kc to 1500kc in four tuning ranges. The BC-312 and BC-314 are operated on 12-14vdc (BC-312-NX version 24-28vdc op) and were intended for vehicular use, which could include trucks, cars, jeeps or tanks. The BC-342 and BC-344 included the RA-20 AC power pack allowing the receivers to operate on 110-120vac with the intended set-up being a fixed station inside a building but mobile stations were possible powered by a portable AC generator. The huge "trunk" connector protruding out of the front panel allows power input on DC versions (or filament voltage access on AC models,) telegraph key input, PTT and microphone routing, remote stand-by (in DC versions,) audio outputs and antenna relay function for interfacing with transmitters and other equipment. All versions of the BC-342 have a Crystal Filter while the DC operated versions will have a DIAL LIGHT control. Early versions of the receivers will have a wire dial index and a fixed 4000Z ohm audio output. All later versions have a plastic dial index and selectable audio output impedance of either 250 ohms Z or 4K ohms Z. Some versions allow access to the 1st AF output for earphone operation while the typical BC-344 set-up has both phones and speaker outputs tied together from the audio output transformer. The receiver shown in the photo above is the BC-344-D built by Farnsworth Television & Radio Corp. This is an AC operated, medium wave receiver. Note that there isn't a Crystal Filter provided on this version and, since it's AC operated, there is no DIAL LIGHT control.

Price: 285 USD

Location: Milford, Connecticut

End Time: 2025-01-06T19:16:47.000Z

Shipping Cost: 68.35 USD