I have a significantly different way to try to address the
underlying problem. I'm not sure if it is even possible, and it
is a fairly big change.
When operating on CW, I use full break-in (QSK) to monitor my
transmit frequency. When operating voice and other data modes,
the transmit times aren't synchronized, so monitoring the
frequency between transmissions can be effective.
These techniques don't work with the JT modes. However, they
have an excellent ability to decode a message in spite of
significant fading. It should be possible to switch to receive
during the middle of a transmission to monitor the frequency and
switch back with only minor loss of decode effectiveness.
I have simulated this approach using a K3 by pressing the "Halt
TX" button for a second or two and then restarting the
transmission without having the other end miss the decode. If
this procedure was automatic, the windows of non-transmission
could be shorter, reducing the effects on decode.
I dream of being able to press a button to invoke this
procedure, and get back something like a signal to noise level
on the channel: a low S/N meaning the channel is not occupied.
73 Bill AE6JV
---------------------------------------------------------------------------
Bill Frantz |"After all, if the conventional wisdom was
working, the
408-348-7900 | rate of systems being compromised would be
going down,
www.pwpconsult.com | wouldn't it?" -- Marcus Ranum
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