> 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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