Thanks for the many replies, after spending HOURS of tweaking and reading and retweaking and listening I have a better picture of what my K2 CW filters are capable of.. There is an interesting dent in each of the curves that I can not explain.. any ideas?
Worth noting, I found out by accident that I can produce a chart that shows zero attenuation between filter settings simply by turning on the AGC. So if you do this, you are not getting realistic attenuation readings. The below chart is the best I can produce with the AGC turned off. Bottom line is that I get about 6 db of attenuation when I switch to the 200 Hz filter. The manual says the filter is designed down to 250 hz so I think that I should be just a tad better than what I am. How far down in db is the filter bandwidth measured ? (I seem to recall it is 6 db?) http://www.vtc.net/~ken/filters2.jpg Ken Lotts aa7jc _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
