Removal of that +Vcc is the final step the sequencer performs when switching to transmit, and the first signal to be output when switching back to receive.
Chris Cox, N0UK
chrisc@...
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On Jan 6, 2025, at 08:21, Chris Cox, N0UK via groups.io <chrisc@...> wrote:
Definitely does work, Andrew.
I do exactly the same on one of my 10GHz rigs. If I remember correctly, I have a ~1k current limiter resistor in series between the +Vcc and the TxInh pin.
Chris Cox, N0UK
chrisc@...
On Jan 3, 2025, at 06:32, Andrew G0JCC via groups.io <andrewmlancaster@...> wrote:
Hi David.....i'm following up a very old post you made back in 2016. TX inhibit on an FT817. Did you get to the bottom of it? Does it work? It looks like placing 12v on the TX Inhibit pin on the ACC socket prevents RF being transmitted. I am working on the sequencing for my 10Ghz system and a TX Inhibit would be very useful!
Thanks, best wishes ...and Happy New Year
Andrew G0JCC
Chris Cox, N0UK