Bill, I had some RFI problems that I cured by wrapping the lines going into the SDR box around an F117-77 core using it as a common mode choke. Larry's solution is easier, so I would try it first. Also, I have found that the 3.5 mm connectors will cause an echo if not seated correctly.
73, Tom W0IVJ Larry Taft wrote: >If you are running the mic through the black box try doing it externally >direct into the D-44. I had the same problem until I wired up an >amplified D104 (genuine chicken choker) direct to the D-44 input and >hooked the PTT to the X2 connector. > >If you have TWO L-4Bs I'm jealous! > >Net on 14329 +/- KHz this afternoon at 1900 UTC. >73, Larry K2LT > >Bill Nagle wrote: > > >>I am experiencing some severe r-f problems with the flex at any external >>linear amp power above 100 watts carrier (AM). When the rf feedback starts >>it causes a repeating "echo" in the listeners end receiver. The first echo is >>the normal flex delay but then it builds on itself into multiple echos. >> >> >>There is no problem with my other setup in the same location using an >>ft1000d into a similar L4-b linear. >> >>I have used the TDK ZCAT2035 clamp on rf chokes profusely around all of >>the cables in and out of the flex but the problem still exists. Does anyone >>have a suggestion for a better choke than the tdk or other suggestions? >> >>Setup is delta44 on a 2.8gig w/512m ram. >> >> >>Bill Nagle >>[EMAIL PROTECTED] >> >> >> >> >>_______________________________________________ >>FlexRadio mailing list >>[email protected] >>http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz >>Archive Link: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/ >>FlexRadio Homepage: http://www.flex-radio.com >> >> >> >> >> > >_______________________________________________ >FlexRadio mailing list >[email protected] >http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz >Archive Link: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/ >FlexRadio Homepage: http://www.flex-radio.com > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20060416/6f5cea5f/attachment.htm
