[GreenKeys] Flecher TU 170 with model 15?

[Harold Hallikainen]

The keyer in the TU-170 has an active current sink setting the current to
60 mA, so no external resistor is needed. The selector magnets and
keyboard in series can be connected directly to the TU-170 loop Jack.

Harold
https://w6iwi.org

On Sun, January 26, 2025 6:11 pm, steve bennett via GreenKeys wrote:
> GKs,
> Â  Can the loop on the Flecher TU170 be connected directly to the selector
> magnets or does it need an external current limiting resistor?I have the
> instruction manual but it is not clear to me.Is the TU170 self limiting to
> 60mA?
> Thanks,-Steve
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