>I beg to differ. Based on rather careful measurements, my 400 Hz >8-pole filter needs an offset of .045 to center it with the DSP >filters.
I don't understand what the filter offset is really doing. My 2.7 KHz filter for example is -0.87. I assume this means 870 Hz offset from something. What reference is the offset from? Does this mean that the IF frequency is actually shifted from some nominal value? Could someone explain a method of measuring roofing filter offset? I have spectrum analysis software. Soon [I hope] I will have the second receiver and I will possibly be setting up a compromise offset for two filters. I paid a little extra for matching filters but it would be good to do some measuring. Mike Scott - AE6WA Tarzana, CA (DM04 / near LA) K3-100 #508/ KX1 #1311 _______________________________________________ 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
