I received some helpful suggestions from "The Smiths" regarding APF,
specifically using RIT to shift the received signal down 20 Hz or so and
using
APF Shift to peak the signal. The purpose is to make the tone of the
received signal 20 Hz lower than the faint ringing noise induced by APF.
This seems to work pretty well, and I used the technique to copy some
weak signals on Top Band last night.
Since the technique requires a bit of knob fiddling, I decided to try to
incorporate these steps into a K3 Macro. So far, I've been able to put
all the steps except the APF Shift into a Macro. I tried using the "IS"
command to do APF shift (after turning on the APF); however the
command continues to shift the IF rather than the APF. \
Is there a special command available yet for APF shift, or is this too
soon to have something because APF is still in Beta testing?
Here's what I have so far:
APF SHFT
IS 9999;SWH29;RT1;RD;RD;SWT49;
IS 9999 centers IF shift to cw pitch; SWH29 turns on the APF;
RT1 turns on the RIT; the RD commands move RIT down 20 Hz,
assuming the user has the normal 10 Hz tuning steps setup; and
SWT49 engages FINE tuning.
To undo all this I have:
APF CLR
SWH29;SWT49;RU;RU;RT0;IS 9999;
I'm open to suggestions for improvement.
73,
Chuck Guenther NI0C
K3 s/n 1061
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