[Elecraft] Data A filter questions

[Wes Stewart]

Don, and I'll reply to Monty here too,

There is no question that I'm in Data A and my HI and LO controls do not function.  I seldom use PSK, I prefer RTTY, but I'm sure that this didn't happen in the past.  Just for giggles I rolled back my firmware to 4.0 sumptin' and I had the same issue.

I generally leave the VFO set for example to 14.070 and click tune on the waterfall, but use HI and LO cut to select the signal of interest.  As it stands the SHIFT range is so limited that I can't isolate lower tones.

Wes




--- On Thu, 12/16/10, Don Wilhelm <w3fpr at embarqmail.com> wrote:

> From: Don Wilhelm <w3fpr at embarqmail.com>
> Subject: Re: [Elecraft] Data A filter questions
> To: "Wes Stewart" <n7ws at yahoo.com>
> Cc: "Elecraft Reflector" <elecraft at mailman.qth.net>
> Date: Thursday, December 16, 2010, 12:58 PM
>   Wes,
> 
> Yes, the NORM for DATA A mode is 400 Hz width, but my HI
> and LO knobs 
> are not locked out (just tap either of the 2 knobs to
> change to HI and 
> LO from SHIFT and WIDTH).
> My DATA A filter width stays the same as I last used it,
> and I usually 
> have the I/II presets with one set wide and the other set
> narrow and 
> switch between them as the situation requires.  Yes, I
> try to move the 
> VFO so the station I am working appears near 1500 Hz on the
> waterfall 
> display.
> 
> I prefer to do most tuning in PSK operation with the VFO
> knob - I run 
> with the AGC on, and unlike when PSK31 started, there are
> now many 
> stations running with power in excess of 50 watts, so those
> stations 
> cause AGC pumping if I set the passband to the full SSB
> width.  The 
> presence of those "Power PSK Stations" has caused me to
> change my 
> operating habits.
> 
> Your choices may be different than mine, but I am quite
> happy with the 
> NORM default for DATA A on the K3.
> 
> 73,
> Don W3FPR
> 
> On 12/16/2010 1:01 PM, Wes Stewart wrote:
> > I don't do much PSK operation but I was just fiddling
> with it and noted something puzzling (to me anyway).
> >
> > Data mode A, although basically a USB mode, defaults
> to CW-like filtering.  The "NORM" setting is 400 Hz (my
> CW filter width, I guess), "Shift" is 1.5 KHz (and very
> limited) and "LO" and "HI" are locked out.  Considering
> how much PSK operation is done, this is quite limiting.
> >
> > Is there some compelling reason that I'm overlooking
> why the default for this mode shouldn't be the same as SSB,
> with the options to have both SHIFT/WIDTH and HI and LO
> CUT?
> >
> > Wes  N7WS
> >
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