Hi Everyone, I have proudly owned K3 #371 for about a year and run about 40% CW with it.
A while back (December?) INRAD briefly offered a 500Hz 8 pole CW Roofing filter for the K3. Then it quickly disappeared from its product listings. About two weeks ago I e-mailed Trey at INRAD and inquired about its availability. He responded that there were a few remaining from that first batch. Having spent over 30 years running a 500Hz bandwidth for CW on various rigs, I decided to try one to replace my 400 Hz 8 pole. I reasoned that I could run CW at my preferred bandwidth while also having a narrow CW roofing filter in line simultaneously. In my opinion this filter is excellent and does exactly what I expected that it would. Some have reported that the 250 and 400 Hz filters do not have much difference in actual performance. This new filter may provide some differentiation between the two. I prefer it over the 400 Hz filter (which is an excellent filter also!) Trey has told me that the 500 Hz filter will be permanently added to their inventory shortly. My $.02...YMMV. Best 73 de N1LQ-Dave ______________________________________________________________ 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
