[Elecraft] K3 rx audio: who's on first?

[Bill W5WVO]

DOUGLAS ZWIEBEL wrote:

> It never ceases to
> amaze me how I can call some "gnat" signal which would normally be
> covered by a loud, close station unless I used a narrow filter, and
> the guy will return my call.  Clearly, he is not hearing the "loud"
> guy as loudly as I am (if at all)...and he must also be wondering why
> he isn't getting a lot more calls.  :-)

This phenomenon is even more prevalent during 6m contesting (sporadic-E) than 
it is on HF. This is because sporadic-E (Es) tends to have a footprint defined 
quite closely by the location of the Es cloud, the height of the cloud, and 
the ionization intensity of the cloud. If the band is open from Albuquerque 
into Alabama and Georgia, those guys may also be hearing guys in Nebraska and 
South Dakota via another Es cloud. But because there is no Es cloud  between 
me and Nebraska/South Dakota, I don't hear those guys at all. All I hear are 
the guys in Alabama and Georgia. I might be getting clobbered by some guy in 
Nebraska running stacked 11s, but I'll never hear him. To me, the frequency 
sounds completely clear except for the guys I'm trying to work.

This is just one of the many interesting little idiosyncrasies that make 
6-meter contesting such a hoot. :-)

Bill W5WVO


>
> My initial reaction to suggestion about using SSB filter for cw was
> that "wide" must be 2.7 or 2.8khz, which is just too wide for me
> unless you're on a very quiet (meaning the opposite of crowded) band.
> To me, a wide filter is lets in too much "noise" which is what I find
> to be fatiguing (different strokes, apparently).
>
> Now we learn that even 2.8khz is not wide enough on cw for some.  Go
> figure.   Each to his own.
>
> I'm glad that the K3 can ostensibly accommodate everybody.
>
> de Doug KR2Q
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