[Elecraft] So, anyone going to get more CW filtering?

[Dave Hachadorian]

----- Original Message ----- 
From: "Darwin, Keith" <Keith.Darwin at goodrich.com>
To: "Elecraft Discussion List" <elecraft at mailman.qth.net>
Sent: Monday, February 23, 2009 3:25 PM
Subject: Re: [Elecraft] So, anyone going to get more CW 
filtering?


> Interesting.  I had the opposite experience.
>
> I was on 40 meters yesterday afternoon for about 30 
> minutes.  Signals
> were all pretty strong as Europe is just across the pond 
> from my QTH.  I
> did a lot of listening, comparing 1.1 KHz with 1.0 KHz and 
> 550 Hz with
> 500 Hz.  The difference of course, is that my 1 KHz and 
> 500 Hz filters
> kick in.  What I heard was a noticeable reduction in 
> thumps, pops and
> AGC desensing as I stepped across the filter engagement 
> boundary.  There
> were a number of situations when I was at 550 Hz and could 
> hear the
> other guy's signal being pumped up and down as my AGC was 
> affected by
> someone 400 Hz away.  I step down to 500 Hz, and the other 
> guy's signal
> suddenly becomes smooth and consistent - no more AGC 
> pumping.
>
> - Keith N1AS -
-----------------

I operate cw with agc off, and absolute minimum rf gain. 
Preamp is disabled and attenuator is on whenever possible. 
That probably explains the difference.

Dave Hachadorian, K6LL
Yuma, AZ