[Milsurplus] BC-348 Questions

[John Hutchins]

Mack -
Short answers 1.  To much voltage.  2. The draw should be about 50-55ma 
@200V.
The voltage should be about 220V - 17V = 203V to ground from the B+ 
rail.  The negative lead off the power supply goes, went, to a coil then 
to ground developing a ~ -17v bias for the audio tube VT-48, type 41 
tube.   There should be part, 101 audio pack, consisting of 101-A is the 
coil and 101-B is the audio transformer. 
Hutch


Mack wrote:
> I'm restoring a BC-348-O. Can anyone tell me how much current the B+ circuit should draw? I'm drawing 70 ma at 250V. Is that a bit high? Might there be another leaky capacitor that I haven't found? It's also  pretty deaf but I'll work on that after I'm sure it's not drawing too much current. 
>
> So far I've thoroughly cleaned the rig and replaced most of the non-mica caps. I've also completely rebuilt the AC power supply. After I'm sure it's working electrically then I'll tackle all the cosmetics with completely stripping the paint and refinishing. 
>
> The BC-348 was the first receiver I owned as a Novice 41 years ago and I'm trying to rebuilt a bit of that nostalgia. Thank you in advance for any advice. 
>
> 73,
>
> Mack
> WB4MAK
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