[Milsurplus] [MRCA] BC-652 Video

[mstangelo at comcast.net]

Ray,

Enjoyed your video. Keep them coming.

I noticed you only changed some of the capacitors. What criteria did you se for capacitor replacement? Are the original rectangular capacitors mica?

Enjoyed the sound of the dynamotor. The last time I ran a dynamotor rig was the Wireless #19 set I got from my cousin. It kept blowing silicon rectifiers in my homebrew power supply upon startup so I ran it from the battery in my father's car.

73 Mike N2MS

> On 07/03/2024 9:47 AM EDT Ray Fantini via MRCA <mrca at mailman.qth.net> wrote:
> 
> 
> Some of you may be aware, or maybe tired of hearing about the 1941 BC-652 receiver that I have been playing around with. This radio was part of the Joe Munson estate and although he had it in his collection have no reason to believe that he had anything to do with the extensive hacking that had taken place prior to me picking it up. Think it was something he picked up at some point and just threw into the pile. The receiver was missing everything on the top deck and had one of the worst AC power supplies installed that I have seen. It also had several shorted or extremely leaky capacitors in the screen and plate bypass sections that had to be changed and thanks to John K4OZY I was able to get a NOS dynamotor so I was able to install that and now the radio is set up for field operation from twelve volts DC I had played around with a lot of solid state inverters but when the opportunity turned up to install a dynamotor and being that I have never used one before on one of my projects decided to go ahead and deal with the high current demands, vibration issues and all the other stuff that comes along with that technology. This receiver sucks down almost six amps with three just for filaments and another two or three for spinning the dynamotor. But you have to admit that just seeing it up on top spinning is sexy.
> You can see the video and judge for yourself at:
> 
> https://www.youtube.com/watch?v=nLIwxZaF61k
> 
> Ray F/KA3EKH