At 07:07 AM 8/16/2006, Mike Monnier wrote: >I have also experienced this spurious situation. I have a few questions. > >I am shopping for a GPS disciplined 10 MHz reference oscillator. I have a >good Symmetricom 58532A antenna. Waiting for the right receiver. Will the >use of this device cut down on the spurs?
No. The spurs are an inherent product of using a DDS for the local oscillator. What the 10 MHz input will do is: 1) make sure the spurs are always in exactly the same place 2) If your 10MHz source is noisy <grin>, then the reference multiplier in the DDS will help to mask the spurs by making the random phase noise higher and comparable to some other radios, so it will "look" better. >I'm also planning to have the KC7KW mods done to my Delta 44 to lower the >noise floor. Same question here, will this help? Thanks in advance for your >comments. Every time you drop the noise floor, things that nobody would care about before become visible. >Mike > > >_______________________________________________ >FlexRadio mailing list >[email protected] >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 James Lux, P.E. Spacecraft Radio Frequency Subsystems Group Flight Communications Systems Section Jet Propulsion Laboratory, Mail Stop 161-213 4800 Oak Grove Drive Pasadena CA 91109 tel: (818)354-2075 fax: (818)393-6875 _______________________________________________ FlexRadio mailing list [email protected] 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
