Wanted - Cheap - for Drake TR-4C: broken AC-4 or AC-3, or home brewed power
supply, or modifiable power supply by other manufacturer, or interesting
power transformer.
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I want to power up a Drake TR-4C I picked up. It did not have a power
supply. The price an AC-4 power supply brings today is more that the
transceiver is worth. Are there more radios out there than power supplies?
(Kind of like there are more horses asses than horses). Are the high AC-4
prices a function of scarcity or what?

I've looked at the schematic of the AC-4 and decided that it's not rocket
science. I'm not putting together an "original" collection of Drake
equipment and I don't need the power supply to fit within a MS-4 speaker
(which I don't have and don't need). So - I think I have some economically
appealing options.

- I could repair a broken AC-4, AC-3 as long as the transformer is OK.

- Home brew power supplies do not scare me.

- It's possible power supplies for other rigs could be adapted to work with
Drake gear.

- I could build my own homebrew power supply. The critical component would
be the power transformer / transformers. (There are many power supply
designs that would work).

Here is what the power supply needs to do:

Input: 117 vac
Outputs: (12.6 vac @ 5.5A), (650 vdc @ 300mA average - 500 mA peak), (250
vdc @ 175 mA), (-45 to -65 vdc for bias)

If any of you have something to sell me that will get me there, please let
me know (with details).


Thanks Jeff - KA9S