A Phil pointed out, the only real fix is on the TX end - the transmitting station should be putting out a clean signal. Universal distribution of the following info will help there.
Clean PSK signal: Turn your power control to full power, Mic gain in its normal position for SSB phone use, and start off with the audio out from your computer turned way down, so when the PSK program is in TX mode ( transmitting ) no output power is shown on the rig's power out meter. Now slowly raise the computer's audio-out until you see the maximun power your rig will put out with no AGC action observed. That is, crank up the computer's audio out until you see AGC action on the rig, then back off until you do not. At this point, you can use the rig's Mic gain to fine-tune the signal further, if necessary on different bands. What you idealy want is 25-30 watts output power with absolutely no AGC action. - You then have a clean signal. More power out is OK, as long as no AGC action is observed. BUT - there is a simple trick to use on the RX end of things, if your rig has a notch filter. While watching the waterfall display, turn on the rig's notch filter, which will produce a narrow "dead" area on the waterfall display. If you do not see the dead area after a few seconds, move the notch control until you do. Note that by watching the waterfall display as you tweak the notch control very slowly, you can literally steer the notch around to cover up any signal you wish. Steer the notch to cover up the offending signal. You can put it right up against the signal you wish to receive if necessary, wiping out an adjacent signal that is crashing your QSO. This may be crude, but it is also quite effective. On my Kenwood TS-450S, the notch is just the right width to effectively cover splattery, overdriven PSK signals. Hope this information is useful! 73 DE Charles, N5PVL ------------------------------------ Announce your digital presence via our Interactive Sked Pages at http://www.obriensweb.com/sked Recommended digital mode software: Winwarbler, FLDIGI, DM780, or Multipsk Logging Software: DXKeeper or Ham Radio Deluxe. 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:digitalradio-dig...@yahoogroups.com mailto:digitalradio-fullfeatu...@yahoogroups.com <*> To unsubscribe from this group, send an email to: digitalradio-unsubscr...@yahoogroups.com <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
