>> In CW, I would suggest that the currently non functional LO-CUT-HI
>> function and settings be used to control APF, where SHIFT moves the
>> peak around in the passband, temporarily showing the frequency of the
>> peak, and WIDTH sets the depth of the falloff, temporarily showing the
>> depth of the APC in dB at width setting of current DSP skirts.
LO-CUT-HI are only "non-functional" if PB CTRL -> Shift=.01. That is
not a good place for APF. A better solution would be to overload CMP
since it is not used in CW but the CMP control is not convenient for
right handed operatorsdue to VFO A.
My preference would be to overload DATA MD (AFX Hold) to select APF
and use the VFO B (or RIT/XIT) encoder for setting peak frequency.
Behavior could be like the manual notch ... a hold would turn on APF
and enable frequency control; a tap would release the encoder for its
normal use. A subsequent tap with APF enabled would turn APF off while
a subsequent hold while APF was enabled would reengage the encoder.
73,
... Joe, W4TV
On 10/26/2010 2:53 PM, Guy Olinger K2AV wrote:
> After gnoshing on this for a while and listening to various posts on
> using this, I would sure hope that one usage pattern does not have to
> preclude another. I suggest the following:
>
> ============================
>
> In CW, I would suggest that DUAL PB turns APF on and off.
>
> In CW, I would suggest that the currently non functional LO-CUT-HI
> function and settings be used to control APF, where SHIFT moves the
> peak around in the passband, temporarily showing the frequency of the
> peak, and WIDTH sets the depth of the falloff, temporarily showing the
> depth of the APC in dB at width setting of current DSP skirts.
>
> APF comes on with peak at spot pitch.
>
> Resetting RIT via program or RIT CLR should also reset APF peak to
> spot pitch. Perhaps with config menu options APF RESET "with rit" or
> "none" values
>
> =============================
>
> I find it difficult to use RIT to move a very weak station down to the
> audio peak point in the passband because there is no calibration of my
> twist of the knob to the rate of change of the station. If he stops
> transmitting or fades, I can't continue. I may tune PAST him.
>
> If I am moving the peak while the incoming frequencies remain
> constant, I have both the remembered constant tone of the station and
> the moving tonal center of the peak to compare, so I can center the
> peak on the station, even if he has stopped transmitting or faded.
>
> In a contest operation, having the peak at the same place as the
> transmitted signal is what is normally needed, and the same way RIT is
> canceled after a QSO, an APF peak moved up or down needs to be
> returned to center, so an RIT CLR, button or command, should also
> return the APF to the spot pitch.
>
> Using SHIFT control with light under SHIFT should NOT move APF peak.
> I sometimes deliberately run a skewed passband rather than move TX
> frequency when someone trys to put one more frequency in there than
> will really fit. If I move, I just encourage him, and he will move
> with me because he's just as bad off on the other side. So I just use
> SHIFT and WIDTH together to bring in THAT skirt without moving the
> other. That being the case, I do NOT want the APF peak to have moved.
>
> Even though the front panel would not reflect the presence of CW APF,
> those who really need it and use it will get used to it, and it will
> get out as yet another great feature slipped in on the firmware. You
> can make some front panel silk screen adjustment in the future on new
> K3's.
>
> 73, Guy
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