Guy, I will agree with you for CW - cascaded filters of approximately the same width can be necessary. However, the question had to do with SSB width filters, and there I believe the answer is different.
73, Don W3FPR On 3/25/2012 10:05 AM, Guy Olinger K2AV wrote: > a K3 with 8 pole > roofing filter AND DSP set for skirt alignment. The DSP by itself is > nowhere near the MP's selectivity, sorry. Not close. > > There is a point in CW contesting, where if you want to continue on a > run frequency, you will have to be able to deal with a MUCH louder > signal just a few hundred Hz up or down, and try to copy a MUCH weaker > signal in band. And since the K3 is so clean in matters intermod, it > really IS possible to deal with a 35 over 9 signal just up and copy an > S1 signal in band, a mere 80 dB difference. IF you also want the > desired signal to be 20 dB louder than the undesired signal in the > audio, you are trying to create a separation of 100 dB !! > > ______________________________________________________________ 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
