[GreenKeys] Model 15 remedial question

[Harold Hallikainen]

Agree on the need for high voltage loop supply. Back in high school (a bit
over 50 years ago), I found that I could get 60 mA with a 12V loop supply,
but the model 15 would only print garbage.

I seem to recall that the original poster had a TU like a HAL ST-6000 or
something. It has an internal loop supply, so you are off to a good start
there. Again, if I remember correctly!

I bought some loop supplies from RTTY Electronics. Notes on these and
other stuff at https://w6iwi.org/rtty

Harold



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