[Central-Electronics] 20A and relay output voltage

[Stan McIntosh]

Hello all,

I joined late last year after a 20A fell into my lap, and then some things
interfered with radio play for a few months.  After digging out, I'm now
digging back in.

After recapping, mine had a B+ of around 400V.  Moving the capacitor in the
power supply to make it purely choke-fed dropped B+ to just over 300V,
which then dropped the output to 1-2 Watts.

Last week, I put the 20A back on the bench.  The 10k resistor in the
negative voltage divider had drifted to 15k over the years.  Replacing it
got the output to 10 Watts with a 40 meter rock plugged into the front
panel.

Mine (SN 4434) is apparently too early to have the antenna relay plug in
the back, but a previous owner did wire the 115 through the relay and
terminal positions 8-10 on the back panel.  I started reversing that last
night to take the relay outputs back to the original configurations.  Even
if/when I do find a rack to house my 20A, I'd rather not have exposed hot
contacts.  Also, that'll make the 20A easier to connect with the R4B muting
connection.

This one's getting close to being ready to take out on the air.

73
Stan
KD4BTH