I primarily run, and only (currently) work RTTY contests. With my
756PRO I have steep-sided filters, and routinely use 250 Hz, which is
all I need to hear stns calling me BUT I worry about my CQ being
heard by S&P guys using conventional filters. If they hear QRM near
my call freq then maybe they can't copy me.
So if I keep my filters narrow to help me receive weak stns then I
don't hear nearby QRM when it starts up. Maybe I waste time calling
when average stns can't copy me.
There is probably an optimum Rx BW for calling stns. Any guesses?
Jerry W4UK
At 23:09 1/30/2006, Michael Condon wrote:
>The quick answer is "all of it"...
>The reality is "none"...
>
>But on CW with a 250 Hz filter on, someone inside of 100-150 Hz is
>getting close.
>I often work with someone who is positioned to produce zero beat to
>me, so I just see AGC action, and that works fine. I will also move
>when it is possible.
>
>I noticed this fellow when I moved to mitigate, and he just slid
>each way with me.
>
>So, Jerry, How much space do you need?
>
>Mike...
>
>Jerry Flanders <jeflanders at comcast.net> wrote:
>
>How much space do you guys think is needed on each side of your
>calling freq in a contest? - for what mode?
>
>Jerry W4UK
>
>At 16:06 1/30/2006, you wrote:
> >FWIW
> > I had someone jump my Freq, low on the band, and give me some ...
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