Thanks to all for the comments. (I am using a 2x 400Hz and 2x 250 Hz Inrad combo in my MP for selectivity at this time, and a wiiiiiide roofing filter)
The subject is very interesting to me since I expect my K3 sometime in June. How about this one for the K3: 2.7 standard 2.1 8-pole SSB contesting 500 5-pole CW contest running 200 5-pole CW S&P especially 160m and 40m The rationale: you don't need 8-pole since: 1. the interfering signals causing IMD don't have to be more than 20dB down to stop the IMD. 2. If I use the DSP filtering, why add 8-pole filters if 1. applies 3. I read that the roofing filters can introduce IMD (because of steep skirts or...? Is there a chance that 5-pole filters have less chance of introducing IMD? Anybody can comment on this?) I sure would like to hear the difference between 400 8-pole and 500 5-pole with fixed DSP bandwidth in a crowded strong signal band. How about that? 73 Arie PA3A _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
