Tim is correct about the cause. This is being addressed as part of the CW iteration.
Gerald Gerald Youngblood, K5SDR President and CEO FlexRadio Systems(TM) 13091 Pond Springs Road, #250 Austin, TX 78729 Phone: 512-535-4713 Ext. 202 Email: [email protected] Web: www.flexradio.com <http://www.flex-radio.com/> Tune In Excitement (TM) PowerSDR(TM) is a trademark of FlexRadio Systems On Fri, Nov 12, 2010 at 7:27 AM, Tim Ellison <[email protected]> wrote: > I believe that on the 3000, the QSE is left on during RX to improve > RX/TX/RX switching performance and it is leaking into the QSD. If this is > the case, it is a known problem and I believe it is one of the things that > will be addressed when the CW is revamped. > > > -Tim > > > -----Original Message----- > From: [email protected] [mailto: > [email protected]] On Behalf Of Clay W7CE > Sent: Friday, November 12, 2010 2:41 AM > To: Flexedge > Subject: [FlexEdge] Flex 3000 Spurs on AM > > I had hoped that 2.0.16 would fix this problem, but it looks unchanged. > If I tune to 50.400 MHz (the local 6M AM frequency) and select AM mode with > a 6.6 kHz BW, there are 4 spurs in the AM passband with the strongest at > -100 dBm (S 4.5). If I turn SR on, the spurs move and decrease in > amplitude, but there are still 4 spurs with the strongest at > -114 dBm (S2+). If I select USB, LSB, DSB, CWL or CWU the spurs disappear > from the panadapter. I don't know if this happens on the lower frequencies, > but it makes AM unusable on 6M. I just checked > 50.300 on FM and the same issue exists. The spurs will be stronger than > many FM simplex stations on that frequency. > > Why does changing mode cause a change in the spurs? I wouldn't expect the > DDS to be reprogrammed when the mode changes. > > Is this a known problem that will eventually be fixed? BTW, I've never > seen this on my 5000A. > > 73, > Clay W7CE > > _______________________________________________ > 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 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 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 beta versions of the software.
