What radio are you using? If you disconnect the antenna, does the intensity of the signals you are seeing decrease? If so, then what you are seeing are not technically "spurs", which are artifacts from the DDS, but real external signals. Probably RFI from your neighbors or in your own home. That is what the "crud" is at my QTH on 6m. If you are using a 6m preamp, it is possible that what you are seeing are mixing products if you have too much gain. For this test, turn off the external preamp and see if the intensity or the number of the signals decreases.
If they do not decrease in intensity upon the antenna disconnect and they move when toggling the SR button on and off, then they are DDS spurs and there is really nothing you can do to remove them, you can just move them out of your RX passband if they are located there by using the SR (spur reduction) control. -Tim -----Original Message----- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of vtnn...@comcast.net Sent: Thursday, June 09, 2011 7:50 PM To: flexradio@flex-radio.biz Subject: [Flexradio] Source of 50 Mhz spurs? Does anyone have any thoughts as to the source of the spurs on 50 Mhz at my QTH? Please see the first photo here. I would really like to eliminate them if possible. http://www.flickr.com/photos/10025089@N05/?saved=1 73 Zack N8FNR _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/ _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
