OK, a local ham kindly gave me a spare glitch resistor as a replacement for
R12, and the Drake has been repaired, tested, and then packed for the trip.
The homebrew 5m amp has been reconnected to its internal HV p/s, tested, and
then packed. I may never find out what caused R12 to blow,
Well, I have determined that the cause of my power supply problem is R12, the
.82 ohm 2 watt resistor on the B+ output of the power supply. It is visibly
damaged.
I have searched this list and elsewhere and it seems there is a split of
opinion on whether to replace R12 with a similar
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