On 07/06/2016 11:22 AM, Joe Subich, W4TV wrote:
Is there anyway to prevent the frequency changing when tuning on the
K3 VFO? I noted this is possible when using a P3, does this use
software built into the P3 or does it send commands back to the K3?
It uses capabilities built into the P3. Specifically, in "fix tune"
mode, the P3 changes its center frequency to compensate for changes
in the K3 VFO frequency.
With the SDR software that implemented a fix tune mode, the FCD+ could
do the same thing. *However* the SDR software would need to know the
the K3's VFO A frequency, mode and IF Offset (IF; and IS; commands),
calculate the IF frequency that corresponded to the desired "fixed
frequency" *and* compensate every time the K3 VFO, mode and/or filter
shift/width changed.
*and* compensate in real time for the latency of the communications
between the P3 and K3. It was a major development effort to get it to
work smoothly.
Alan N1AL
73,
... Joe, W4TV
On 7/6/2016 11:36 AM, graham.wo...@mypostoffice.co.uk wrote:
Hi All
I have been trying the Funcube PRO + dongle connected to the IF
output on the K3. It works fine, displaying sigs in a 180khz passband
centered on 8215 EG setting the FCD to 8215 khz & tuning the K3 to
10100 (A RTTY WX stn) this stn is still visible on the FCD display
with the K3 is tuned to 10180 khz. Is there anyway to prevent the
frequency changing when tuning on the K3 VFO? I noted this is
possible when using a P3, does this use software built into the P3 or
does it send commands back to the K3?
Gray G3VIP
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