Rein Couperus wrote: > We generally use 300 Hz filters for PSK125 and they are too wide. > There is no substitute for good narrow Xtal filters. I don't > understand how you can try to work PSK31 (50 Hz bandwidth) with a 2.7 > kHz filter. That is against all logic (and math). > > We recommand using the narrowest filters you can get for pskmail. > That is the only way to fight Pactor QRM. It helps to use the > passband shift and use the sweet spot of the rig at 1500 Hz (we use > an Icom 756). Our PI4TUE server has good performance with that, > provided you get the filter as narrow as possible (this is for > PSK125, which is 4x the bandwidth of PSK31...). A 250 Hz Xtal filter > is wide enough for PSK125. > > 73, > > Rein EA/PA0R/P
Rein, you are right as rain! :-) Most Yaesu rigs have a digital passband center freq of 1000hz, but otherwise everything you say above is right on the money. de Roger W6VZV ------------------------ Yahoo! Groups Sponsor --------------------~--> Check out the new improvements in Yahoo! Groups email. http://us.click.yahoo.com/4It09A/fOaOAA/yQLSAA/ELTolB/TM --------------------------------------------------------------------~-> Announce your digital presence via our DX Cluster telnet://cluster.dynalias.org Our other groups: http://groups.yahoo.com/group/dxlist/ http://groups.yahoo.com/group/themixwgroup http://groups.yahoo.com/group/contesting http://groups.yahoo.com/group/wnyar http://groups.yahoo.com/group/Omnibus97 Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
