----- Original Message ----- From: "Darwin, Keith" <keith.dar...@goodrich.com> To: "Elecraft Discussion List" <elecraft@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 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
