[Elecraft] PBT Macros

[Guy Olinger K2AV]

I use 2.7 and matching DSP setting for almost all casual use.

I don't use the narrow SSB filter (1.8) except for contests and
occasional encroachment.  In that case NOT being able to remove loud
sidebands from above and below is far more fatiguing. And I find
myself jockeying shift all during the contest based on conditions.
The narrow filter also keeps up or down loud sidebands from hitting
the analog-digital converter stage in the IF, and needing to engage
the (necessarily) primitive analog hardware protection AGC.

The narrow sounds great during the contest and when the contest is
over I can't stand it.   : >)

73, Guy.

On Mon, Apr 12, 2010 at 11:54 AM, Al Lorona <alorona at sbcglobal.net> wrote:
>> With passband tuning
>> (IF shift) and narrow and wider filters, I find myself
>> almost always using the narrower filter.
>
> I caution you against equating PBT with IF shift; I did the same thing a few weeks ago and almost got my head chopped off by the resident gurus.
>
> By the way, here are two trivial macros that I use to simulate --now, let me get this right-- *passband tuning*:
>
> SHIFTDN   BW0200;IS 1000;  (or even narrower if you desire)
>
> SHIFTUP   BW0190;IS 1550;
>
> UNSHIFT   BW0240;IS 9999; (or whatever normalized passband you desire)
>
> Though I know you're not a fan of doing this, Tom, I occasionally employ this technique to pull an exchange out when the contest QRM is at the moment coming predominantly from one side.
>
> I can't listen to SSB in narrower than about 2.0 kHz for very long; I get listener's fatigue. I have been astounded by the folks who have 1.5 kHz filters installed for SSB. For me to understand a guy in a 1.5 kHz bandwidth he would have to slow down his speech to twenty words per minute and repeat each word five times.
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