>I have a K3/10 on order. I have used my K2 for over a year and find >the filters to be very good. I operate 90% on the time on QRP >CW. I'm looking for opinions on which roofing filters I might include.
Unless you're contesting or dealing with DX pileups, probably none. The default 2.7 kc filter works fine. One of the reasons I purchased a K3 was that it had 5 roofing filter slots and a whole slew of filters available to fill them up. When my K3 kit arrived in June, it came with only the 2.7 KHz filter-- my CW filters were on back order. I notice a huge difference when I installed the 400 Hz filter. Right now, I own two SSB filters and four CW filters, and am evaluating which three of the four CW filters I want to keep. My application is mainly DX pileups, sometimes along with some close neighbors. 73, Chuck NI0C K2/10 s/n 5853 K3/100 s/n 1061
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