Being tha t it was mentioned that best responses seem to be with a roofing filter wider than 300Hz and then he mentioned the "250Hz" filter wouldn't you deduce that he meant the 370Hz filter which Elecraft calls 250Hz? I mean maybe I'm jumping to conclusions here but that was pretty clear to me.
On Mon, 2008-07-07 at 15:27 -0700, Bill W4ZV wrote: > > > Joe Subich, W4TV-3 wrote: > > > > > > Bill, > > > >> David you may be suggesting that "in theory" but I would pay > >> *close attention* to what W0YK says. Ed wins many RTTY contests > >> including several current world records from P49X, and results > >> sometimes speak louder to me than theory (and I'm an engineer > >> if that means anything). > > > > Ed and I had an extensive off-line discussion concerning the K3 > > filter options and RTTY. We both made multiple measurements of > > the composite bandwidth (roofing filter, DSP and dual passband > > filter) with several settings. The consensus is that the 200 Hz > > DSP settings work as long as the roofing filter is more than 250 > > Hz wide. > > > > That's interesting since there isn't a 250 Hz roofing filter. There's a 370 > Hz and a 224 Hz, but no 250 Hz. What did you use for the 250 measurement > above or is that a calculated result? At any rate, I'll defer to Ed since > he's forgotten more about RTTY than I'll ever know, as his contest results > demonstrate. ;-) > > 73, Bill > > _______________________________________________ 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
