On Sun, 18 Jul 2010 16:33:40 -0400, Joe Subich, W4TV wrote: >I don't know that "benefit" is necessarily the correct word to use >ton describe cascading. The better term would be "effect." The K3 >still exhibits benefits from the distributed filter design - the >roofing filter protects the 2nd IF and DSP from overload, AGC >pumping and IMD from strong signals outside the passband of the >DSP filter.
Of course. But as contesters and DXers, we always look for more, and the cascading of filter responses can certainly be beneficial. >However, the roofing filter is not intended to contribute significant >selectivity within the DSP passband. That's not the function of a >roofing filter Yes, but the laws of physics does result in cascaded response. Just because a tool is designed for one purpose doesn't necessarily mean that it can't be used for others. :) Repeating what I stated earlier -- when 100 big signals like W8JI, W4ZV, N6RO, and K1TTT are crammed into 15-25 kHz to work EU or JA, you can never have enough front end! And thankfully, I think all those stations are running K3s (I'm not sure about TTT). 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
