If you use a 12vdc relay don't forget to put a diode in series and in
parallel to squelch the back voltage.
Art WA6IPD
Grant Youngman wrote:
>> Grant, wouldn't a simple 12vdc relay work in this case? Why
>> would I need a transistor? OR is it because the logic is
>> reversed? (in that case, use the opposite N.O. poles)
>>
>
> I think that would work just fine. Just run +12 (or +5 or whatever) through
> a current limiting resistor in series with the relay coil and connect the
> other end of the coil to a TX OUT line. That will energize the relay when
> the Orion goes into transmit and pulls the TX OUT line low. And a N.O.
> contact can switch the voltage you want to control.
>
> Grant/NQ5T
>
>
>
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