BTA-1R1 AM Transmitter Restoration
(see here for the custom support rack)
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the finished product ...
Now the full story ...
Each one weighs HOW much?!
comes the BTA-1R1
BTA-1R1 to the left; BTA-500R on its side
(Compare the sizes to the 1KW BTI amp on the bench!)
The cabinets are the same size; 84 x 34 x 32
for both (HV, HV choke, Mod, Mod reactor); misc
following few photos are of the BTA-1R1
view of RF deck - stripped of most components
Front view showing disassembly
RF tank coils disassembled and ready for silver
HV Diode stacks; note the heat discoloration.
All resistors test good;
a few diodes are shorted and were replaced with 1N4007's
Feedback ladder renewed!