Deni In the past, the -6 dB number was usually paired with a -60 dB number to calculate the shape factor of the filter. It would be the -60dB bw divided by the -6 dB bw, to give a shape factor somewhere between 1 (vertical sided passband) and maybe 2 at the worst.
Not sure where the -3dB comes from, maybe advertising? :-) Makes the filter bandwidths look better. 73, Bob N6Wg _______________________________________________ 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
