Hi John, The DSP is audio. Its got a sharper cutoff but can be affected by the AGC which is also audio. The crystals filters FL1 -FL4 are IF and closer to the front end and cut interference before the AGC.
Yes, in non critical situations, the DSP filters are sharper, but if a loud adjacent signal gets through the IF because a narrow IF filter is not being used it will activate the AGC and desense the signal you are listening to. The best thing to do is narrow it down first with the IF filters, and then use the DSP narrow bandwidths if the IF filtering is not enough. I have some samples of the bandwidths here. http://users.ev1.net/~spituch/Steve's%20Page/Radio/RTTY/RTTY.html By the way, using MixW to align the filters was very easy. Regards, Steve, W2mY/5 -----Original Message----- On Behalf Of John Wiener I have been playing with the KDSP2 on my K2 and was wondering if the DSP filters are significantly different in their effects than the effects of filters FL1 thru FL4. To me, they seem a bit redundant, in terms of audio effect on listening. -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.12.0/439 - Release Date: 9/6/2006 _______________________________________________ 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
