As mentioned on the list before that sounds like a possible relay problem. Tim and the service guys might want to chime in on whether it is suggested practice or not, but a slight physical jarring of the relays might be enough to tell if it is a mechanical relay problem.
Dave KU4B On Mon, 2010-09-06 at 15:52 -0600, Jordan wrote: > Running 1.18.5 F5Ka, WinXP, Quad core @ 3.6Ghz, The only Rx loss experienced > here has to do with the Rx line switching. > > I've had drop-outs that could only be corrected by flipping through the ANT > selector drop-down. None of these were transmit related in any > way....FYI....73...Jordan VE6ZT > > > ----- Original Message ----- > From: "Ralph W5JGV" <[email protected]> > To: <[email protected]> > Sent: Monday, September 06, 2010 3:25 PM > Subject: Re: [FlexEdge] Flex 5000a--Sudden drop in noise floor--loss > ofsensitivity > > > >> Could this be a "dry contact" relay problem, where the contacts aren't > >> gold plated for dry-switching, and there isn't enough current through > >> the relay contacts to clean the oxide layer? > > > > > > I don't think that's what's happening. We seem to have been two different > > problems reported in this thread. > > > > The first was that after transmitting, the RX sensitivity was dropped way > > down. > > > > The second was that sporadically the RX sensitivity would take a dump and > > then quickly recover. > > > > It was my thought that perhaps a bad relay was causing the first problem, > > but likely not the second one. I too, have seen the sporadic drop in RX > > sensitivity. I am pretty sure it is a software problem. > > > > This afternoon while running PSDR 1.18.6, I was trying to setup a PSK > > program. As soon as the PSK program was running, I began see sporadic > > dropouts at intervals ranging from 5 seconds to two minutes. This only > > happened when the PSK program was running. I tested both WinPSKse 2.23 > > and > > WinWarbler. Both cause the same dropouts. Turning VAC on or off makes no > > difference. > > > > While the dropouts were happening, I watched the latency - no change. The > > same with CPU time - no change. Network usage - no chance. BUT when the > > dropout happens, the entire computer momentarily freezes - screen update, > > mouse, audio, everything just stops. > > > > Interesting. > > > > 73, > > > > Ralph W5JGV - WD2XSH/7 > > > > > > _______________________________________________ > > 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.
