[GreenKeys] W9DDD

[Tom Hunter]

John,

I don"t know which came first - the Heathkit HD 3030 or thr Flesher TU-470.

But they are absolutely identical to the extent that I took the power
transformer out of a dead TU-470 and put it in an otherwise good Heathkit.
It worked perfectly.  Both have internal loop supplies.

Note: these old TU's don't like today's line voltages. That is how
the transformers burn out. I have to run them on an eBay bucking
transformer. They are very happy that way.  My  FlesherTU-170
runs noticeably cooler too. The bucking transformer was well
worth the 90-some dollars.


Tom   N3CRK
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