The only time I've seen that it is "appropriate" is when the response is
more courtesy, and NOT a matter of operational safety... of course, by
taking that tack... any communication that is appropriate to acknowledge
with just 2 taps of the mike is probaby not "appropriate" in its own right.

Just my 2 cents..
Dave

Ben Jackson wrote:

Somewhere I read that you should NOT acknowledge transmissions by just
pressing PTT briefly. Now, I had never heard that before, nor done it,
but since then I think I've heard it happen.

Can someone who is familiar with this explain the PTT-ack customs so I
know how to interpret it?