I can share my recent experience in the ARRL CW DX contest. I have a K2/100 with no additional filtering (i.e., no KAF2 or KDSP2). I had the variable bandwidth crystal filter set to 1000 Hz, 500 Hz, 300 Hz, and 150 Hz. I ran most of the contest set to 150 Hz.
There were a few times when I felt like additional filtering would have been a "nice to have". There were no times when I felt like it was a "gotta have". And that was also my experience in the CQ WW last November (running 10 watts pre-KPA100!). I'm probably going to build the AF1 external audio filter later this year. I'm sure it will be handy, but I'd do it mostly for the pleasure of building another mini-module! Cheers - Bruce ----- Bruce Rosen K1FFX k2/100 6982 -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Kit-Questions-tp6002462p6078821.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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
