wildstar@nmtvax.UUCP (01/06/86)
I have a BC-348-R Signal Corps military surplus receiver. I have been going crazy trying to find a schematic for it, or at the very least, what kind of power and where to apply it to get it working. Please don't let this noble rig go to waste. 73's Andrew Jonathan Fine
larry@kitty.UUCP (Larry Lippman) (01/12/86)
> I have a BC-348-R Signal Corps military surplus receiver. I have been going > crazy trying to find a schematic for it, or at the very least, what kind of > power and where to apply it to get it working. Please don't let this noble > rig go to waste. Have you tried Fair Radio Sales in Lima, Ohio? Hell, they still sell ARC-5 Command Sets! If Fair Radio Sales doesn't have the data (they do sell just manuals), no one does. ==> Larry Lippman @ Recognition Research Corp., Clarence, New York <== ==> UUCP {decvax|dual|rocksanne|rocksvax|watmath}!sunybcs!kitty!larry <== ==> VOICE 716/741-9185 {rice|shell}!baylor!/ <== ==> FAX 716/741-9635 {G1, G2, G3 modes} duke!ethos!/ <== ==> seismo!/ <== ==> "Have you hugged your cat today?" ihnp4!/ <==
stephany.WBST@Xerox.ARPA (01/15/86)
I hav a schematic for the BC 348-r. I own a BC 348-Q and keep it in my living room for use and a conversation piece. The BC348 runs on 28 volts DC. The screen grids are disabled in xmitting so you have to run a jumper from pins 2 to 6 on the back cable. The other pins on the socket are for the 28 volts and the output to the phones or speaker. You can get the plug and the mounting frame from Fair Radio, Lima Ohio, as wel as any other parts. Be sure to run it on 28 and not 24 volts. People complain about the low audio volume of the BC 348 but that is due to rinning it on 24 volts. I have removed the dynamotor from mine and built a power supply inside the room for the dynamotor. A 24 volt xformer fits in place of the big 2 microfarad capacitor, which was removed and replaced with a midget 2 mocrofarad. Originally I put 24 volts AC on the filaments and got the low volume and some hum and aised the voltage. I put in a rectifier and cap to put DC on the filaments and eliminated the Hum. i use walkman type earphones which respond to 60 hertz, so use of DC. I also added a 4000 ohm to 4 ohm output xformer togive a low impedance output. Send your address and Ill send the schematic. The BC 348 was used on the B17 and B25 bomers during WW2. mine was built in 1943 and is used for SWL evenings. Joe N2XS