[ARC5] BC-348M

[Kenneth G. Gordon]

On 20 Dec 2013 at 11:43, Dennis Pharr wrote:

> Also, while tracing the wiring I've noticed a very odd thing - one of
> the six "canned" .5uf 250V caps (39-1) has buss wire shorting the
> terminals. The buss wire shorting the cap appears to be "as-built"
> since the pictorial wiring diagram also shows this cap as being
> shorted.  I can't understand why the designers would include a large
> canned capacitor in the design and then specify it as shorted in the
> documentation.

I just took a close look at the schematic for the "P" model: 39-1(A,B,C) has 
all three high-side terminals shorted TOGETHER, but NOT to ground, so as 
to provide 1.5 MFD capacitance at that point.

The designers simply needed 3 X the capacitance at that point that one 
section could provide, so they simply paralleled all three sections.

This is completely normal.

Either leave it alone, or if it is bad, replace it with one 1.5 MFD capacitor.

BTW, a BC-348 with a BC-946B "Q-5er" was my very first really GOOD 
receiver. They are really excellent receivers.

Ken W7EKB