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THE AM BULLETIN BOARD => Military Amateur Radio Section => Topic started by: n8fvj on January 23, 2025, 06:38:21 AM



Title: The Great BC-348 Receiver
Post by: n8fvj on January 23, 2025, 06:38:21 AM
Yes, many articles on the BC-BC-348 receiver, but worthy of an overview. The BC-348 is a very good receiver for AM and no issue with SSB. It actually outperforms these vintage Ham receivers per W1VD receiver tests.
Collins 75A4
Hallicrafters SX-28A
Hallicrafters SX-88
Hallicrafters SX-117
Hammarlund HQ-120X
Hammarlund HQ-170A
Hammarlund SP600-JX17
Mackay 3010B
National NC-183D
RCA CR-88
RME 4350A
TMC GPR 90

I would only recommend the BC-348 models with antenna tuning. I believe the BC-348H, K, M, O, P, R have the antenna tune. All of these radios are the early more expensive build radios. They are called the GCT design. Being Mil-Spec design, the radios are rugged. I would replace the 120 volt power supply HV caps with 100uF to keep AC hum low. Use a HV dropping resistor if higher than 235 volts. 10x .01uF caps in cans should be replaced and 8x molded paper caps should also be replaced.


Title: Re: The Great BC-348 Receiver
Post by: KA3EKH on February 05, 2025, 09:11:29 PM
This was under technical but thought I would post the link over here in the Military section.

https://www.youtube.com/watch?v=p9pMvDN7kMk

Its the Mr Carlson Labs stuff and three hours long but have been told a lot of people think its good. Have at least one Ham I know and respect tell me that he now wants a BC-348 and never did have a desire for one until after seeing it.
Its a Q in the video and they were always my favorite. No big fan of the older grid top tube versions.






Title: Re: The Great BC-348 Receiver
Post by: Steve - K4HX on February 09, 2025, 03:11:59 PM
Ashtabula Bill used one. 'Nuff said.
AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands