Mike,
If you use Joe's solution where PTT is one input into an AND gate, if
PTT is not asserted, your relays will not close. All inputs to the AND
gate must be present for the output to change state.
73,
Don W3FPR
On 8/28/2013 2:08 PM, AD6XY wrote:
Hi Joe,
That's an easy one - I did think about that but rejected the idea as the K3
can go into transmit without a PTT input, in several ways, including the
extremely useful voice keyer but also by PC command, pressing the tune
button, VOX etc.
Mike
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