[Elecraft] P3 Beta code 'ghost' issue; Data A revisited

[Joe Subich, W4TV]

In AFSK A/FSK D the transmit/VFO B cursor is 400 Hz.

73,

    ... Joe, W4TV


On 4/27/2014 12:54 PM, Ken Kontor via Elecraft wrote:
> I agree with Rick's comments above. I use N1MM for FSK RTTY. I have an extra RX window set up to receive signals from VFO B in split mode so I can tell who the last worked station was while I copy the DX with VFO A. With a narrow 400 hz bandwidth and 10 khz span on my P3 I can easily tune from station to station centering his tones in the narrow P3 curser. A 2.7 KHz curser pattern on the P3 would cover up most of what I want to see. I for one would not upgrade my P3 software until this issue is corrected. A narrow 400 Hz curser is necessary for both VFO A and B in RTTY as far as I am concerned.
>
> 73, Ken - W8KEN
> On Sunday, April 27, 2014 3:34 AM, "Rick Bates, WA6NHC" <happymoosephoto at gmail.com> wrote:
>
> This evening as I was listening to a moderately weak station on 30 meters CW.  I noticed that the P3 display showed a wide (+-.75 KHz from center) pulse pattern centered on the frequency I was on.  I also noted that there was a strong (XE2, not that it matters) almost 3 KHz down.  The P3 pattern matched the CW pulses of that station down band.  I wasn't hearing anything but the weak station on the K3 (well done Elecraft).
>
> So I wondered, could this anomaly be caused by the new noise blanker algorithm?  Yup.  I turned off the P3 NB function (set at 12) and the anomaly went away.
>
> So if you're seeing something on the P3 that isn't there, turn off the NB function and watch again.
>
> On the subject of the Data A red pattern width change; my normal set up for working RTTY/PSK (AFSK, Data A mode) split was:
>
> Narrow and recenter the filter to hear only the station I want to work (sound card doesn't get hosed);
> sync the two VFOs (double tap; copy everything over to B);
> go split;
> move the VFO B (now with the matching pattern of VFO A RX, in red) on top of the last station worked, fine tune by listening to the sub-RX if desired.
>
> The former (pre-beta) pattern showed the same narrowed width as the main RX (shows the slot my audio tones would go out), which made it easy to spot the (TX) VFO B on or near the last station worked, simply line up their trace under the red swath.  This makes for a nice quick attack mode.
>
> Having the wider red pattern (2.7 KHz) makes this much harder now since I can't 'see' where my tones are going to be.  If given a vote, I like the old way better if the P3 can't read the filter width and match the display to the actual.  At least I had a ballpark idea where my tones would go.
>
> 73,
> Rick, WA6NHC
>
> iPad = small keypad = typos = sorry ;-)
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