Michael, I am using the 2.2 kHz filter on my KSB2 with the KAF2 and have noticed no problems with the low pass filter. There is a very slight difference in the upper end of the audio when I measure the filters with Spectrogram (KAF2 in vs. KAF2 removed), but it is not enough to cause me any concern and may even be an advantage in actual on-the-air listening because it cuts some of the high frequency hiss without reducing intelligibility.
73, Don W3FPR ----- Original Message ----- > I plan on building my KSB2 to KI6WX's 2.2 kHz crystal filter bandwidth > specifications (which is now the current Elecraft bandwidth). Should I shift > the KAF2's low-pass filter roll-off higher in frequency when I build it to > account for the increased bandwidth of the KSB2, or will the low-pass > roll-off be adequate as is? > _______________________________________________ Elecraft mailing list Post to: [email protected] 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
