Hi Lyle: I agree with Joe if I am using psk (data A) there are a lot of times I need filters below 150 hz. PSK having the least bandwidth requirement of the data modes I would have thought you would have kept it at below 150 hz.
Just my 2 cents worth Bob, KK6UE --- On Fri, 7/4/08, Joe Subich, W4TV <[EMAIL PROTECTED]> wrote: > From: Joe Subich, W4TV <[EMAIL PROTECTED]> > Subject: RE: [Elecraft] 2.13 beta > To: "'Lyle Johnson'" <[EMAIL PROTECTED]>, [EMAIL PROTECTED] > Cc: [email protected] > Date: Friday, July 4, 2008, 12:36 AM > Lyle, > > > 50 Hz and 100 Hz BW are available in PSK D. > > > > With a 1500 Hz center frequency the narrow filter should be > made > available in DATA A. I would also argue that it should be > made > available in AFSK A if MARK <> 2125 (e.g. CF=1000Hz > or 1360Hz). > Both DATA A and AFSK A are useful for PSK31 which can > benefit > from the ultra narrow filtering. > > 73, > > ... Joe, W4TV > > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of > Lyle Johnson > > Sent: Thursday, July 03, 2008 11:59 PM > > To: [EMAIL PROTECTED] > > Cc: [email protected] > > Subject: Re: [Elecraft] 2.13 beta > > > > > > > ...I can now only drop to 150 hz in data mode, > not 50 like > > I was able > > > to with 2.10 Any one else seeing this. > > > > 50 Hz and 100 Hz BW are available in PSK D. > > > > The reason they are not available in other data modes > is because they > > are not applicable (AFSK and FSK D), or the fact that > the center > > frequency allowed for the sharpest FIR filters is > limited to > > something > > under 2 kHz makes them not general. > > > > 73, > > > > Lyle KK7P > > > > _______________________________________________ > > 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 _______________________________________________ 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
