[Elecraft] K3 - Using MiC Key (PTT) to Transmit (activate) VOX (NOT Computer)

[Richard Ferch]

It occurs to me that another option might be to connect the footswitch,
with a pullup resistor to 5VDC, to pin 7 of the ACC connector, and set
CONFIG:TX INH to HI=INH. This should prevent the K3 from transmitting
except when the footswitch was pressed. You might want to wire an SPST
switch in parallel with the footswitch so you could disable the inhibit
function in other modes.

73,
Rich VE3KI

On 8/15/2014 1:33 PM, iain macdonnell - N6ML wrote:
> I think it's an interesting idea. It seems it should be feasible to
> implement in firmware, but maybe non-trivial.
>
> Thinking outside the box; what if you route the mic signal through the
> footswitch instead of PTT? Or maybe through a relay that the
> footswitch triggers... and keep VOX on all the time.
>
>