It is the 0 Hz IF of the DDS. What audio drivers are you using for each operating system with the FLEX-1500?
-Tim -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of DL1FUX Sent: Monday, July 12, 2010 9:55 AM To: [email protected] Subject: Re: [FlexEdge] Flex-1500 spur Ups, I changed my OS from Vista32 to XP Prof. and now I do have this spur, too. Direct after release of ptt or changing preamp settings it goes up about 20 - 30 dB above noise level and falls down within 3 seconds. Changing IF to 0 Hz puts it direct on the red line. SR does eliminate it totally. I did not notice it unter Vista. 73, martin dl1fux Am 12.07.2010 14:56, schrieb Tim Ellison: > That is probably the DDS "0 IF noise". > > > -Tim > ----- > W4TME > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of David McKenzie > Sent: Sunday, July 11, 2010 11:50 PM > To: flexedge > Subject: [FlexEdge] Flex-1500 spur > > Hi, > > On my Flex-1500, I have a spur at about -3500 at all times. Changing the > preamp setting makes it stronger/weaker for a short amount of time when > switching from 0 to +30 to 0, then settles back down. Anyone else see this? > Seems most noticeable on quiet bands, at around -120. Doesn't appear to be > anything in the shack. > _______________________________________________ > Flexedge mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz > This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used > for posting topics related to SDR software development and experimentalist > who are using alpha and beta versions of the software. > > _______________________________________________ > Flexedge mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz > This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used > for posting topics related to SDR software development and experimentalist > who are using alpha and beta versions of the software. _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using alpha and beta versions of the software. _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using alpha and beta versions of the software.
