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+12V output when TX?
I seek a +12V signal when I key my '6400. I want to use this for some switching; the manual seems to say all the TX1-3 are pull-to-ground and would require a pull-up resistor...?
Is there some port/pin/jack which will source +12V at 10mA upon transmit? Or, where would I find and apply a pull-up to +12V for a TX1 signal that does what I need?
(for the truly curious: I operate my TS-850 in this manner, with the +12V TX being some 10ms faster than using the T/R relay. This +12V TX signal goes into a buffer/inverter box containing a Solid-State-Relay (SSR) which in turn triggers the open-frame relay in my Collins 30S-1 amp. The '6400 TX1 output is not directly compatible with the amp's 12V relay: the current is high and un-specified, and the inductive-kick upon opening is at least 100V... my buffer/inverter box deals with all this).
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