John: All of this offset is built in to the software. On the air, the CW receive is set by the "BFO" function on the Setup/DSP/Keyer page. The frequency readout is adjusted so that a CW signal which is in the center of your BFO centered frequency has the on the air frequency corresponding to this offset. The same DDS carrier is selected for the transmitter so it is automatically offset when it goes into transmit so the TX signal aligns with your BFO offset. The IQ tones are adjusting to EQUAL your BFO offset so that the CW carrier appears on the correct frequency on the air. If this is not occurring, it is a bug. However, I do not believe this is happening because I work CW almost exclusively with the radio and I detect no offset.
Bob NJ0U wrote: > Tim, > RIT is 0. I have XIT set to -870 in CWL to correct for the offset. > > Thanks, > NJ0U > > > > > > > > > Tim Ellison wrote: > >> RIT? >> >> -Tim >> --- >> Tim Ellison ( [EMAIL PROTECTED] ) >> Integrated Technical Services ( http://www.itsco.com ) >> >> >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf Of NJ0U >> Sent: Tuesday, June 06, 2006 9:12 PM >> To: FlexRadio@flex-radio.biz >> Subject: [Flexradio] CW Transmit frequency offset >> >> The CW TX frequency on my SDR-1000 is offset from the receive frequency >> by about 870 Hz. The radio receives on frequency, but transmits cw with >> an 870 HZ offset from the receive frequency. The Tune TX frequency is >> correct. This offset exists in both CWL and CWU. I am running v1.6.2, >> SVN 495. Any suggestions? >> >> John, NJ0U >> >> _______________________________________________ >> FlexRadio mailing list >> FlexRadio@flex-radio.biz >> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz >> Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ >> FlexRadio Homepage: http://www.flex-radio.com >> >> >> > > > _______________________________________________ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > FlexRadio Homepage: http://www.flex-radio.com > > -- AMSAT VP Engineering. Member: ARRL, AMSAT-DL, TAPR, Packrats, NJQRP/AMQRP, QRP ARCI, QCWA, FRC. ARRL SDR Wrk Grp Chairman Laziness is the number one inspiration for ingenuity. Guilty as charged! _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
