Thanks, Ray.  As usual, my written communication fell short of the mark.

In the instance I described, the DX was keeping his xmit frq constant, and
changing frequency that he was responding to (not enough to call it split) .
Because he had an occasional carrier on his signal and several folks
zero-beating him, he was answering calls on either side at random, +/- 250
Hz.  I had to open the PB to see who he was responding to because some
stations would just call and call.  I wanted to hear who he was responding
to.  I tried doing it visually, but because several stations were
transmitting at the same time I needed to hear it so I could separate the
"winner" in my brain.  As I tried to hear the winner (maybe S5 to the DX
S2), a carrier S9 would pop up and I could not separate anything.

Maybe I am just not using the power of the filters and instead I am relying
too much on my own brain matter to do the separation.

Mark Lunday, WD4ELG
Greensboro, NC  FM06be
[email protected]
http://wd4elg.blogspot.com
http://wd4elg.net


-----Original Message-----
From: K9DUR [mailto:[email protected]] 
Sent: Wednesday, April 06, 2011 5:23 PM
To: 'Mark Lunday'; [email protected]
Cc: [email protected]
Subject: RE: [Flexradio] Notch Filter and PB tuning?

Mark,

You wrote,  "...the DX is S4 and working simplex +/- 300 Hz either side of
his frequency.  So I need to open up the PB filter."

Why do you need to open up the RX filter?  As long as he is not changing
frequency, set the RX filter to cut out the offending signal.

The RX filter setting is just that -- a receive filter.  It has no effect on
the transmitted signal.  You can transmit on any frequency regardless of the
RX filter setting.

73, Ray, K9DUR
http://k9dur.info




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