Mike, Now that you've done rf gain cal, you'll still need to adjust SMTR OF & SC so that you get S9 with 50 uV and S2-3 with 1 uV. RF gain cal linearizes the dsp's internal representation, while SMTR OF & SC set the actual meter indication.
Try the factory defaults first. 73, Wayne ---- http://www.elecraft.com On Oct 7, 2009, at 10:59 AM, "Mike Harris" <mike.har...@cwimail.fk> wrote: > G'day, > > My results are: > > Source - XG1, RX gain calibration per the utility routine: > > Subsequently: > > Main RX only, pre amp OFF - 50uV (S9), 1uV (S2) > > Sub-RX ON therefore splitter loss: > > Main RX S8 & S1 > Sub-RX S7 & S0 > > No big deal but not identical. > > As a matter of interest, the S-meter on the main RX had been set up > a year ago or more as above. When I checked it before doing the RX > gain calibration I discovered that the 1uV and 50uV figures were S5 > & S9. Little wonder I thought the local noise level had been > creeping up! Maybe after playing with the AGC parameters a re-cal > of the S-meter is required, maybe not, but something altered it. I > assume that given the 50uV S9 setting was correct then it isn't > associated with the XG1. > > Regards, > > Mike VP8NO > > > ----- Original Message ----- > From: "Ken K3IU" <kenk...@cox.net> > To: "N1JM" <johnn...@gmail.com> > Cc: <elecraft@mailman.qth.net> > Sent: Wednesday, October 07, 2009 12:22 PM > Subject: Re: [Elecraft] [K3] Sub RX S-meter cal > > >> The S-meter Cal procedure in the manual worked up until about >> v.3.15 or >> so. Now I am pretty sure that it was NOT separately adjusting the >> SubRx >> S-meter, but I never checked, so I'm not sure. It doesn't really >> matter now. >> >> I have determined that, at least on my K3 (#202) running v3.41 et >> al, >> after running the RF Gain Calibration procedure and setting the >> MAIN Rx >> S-meter, the Sub Rx S-meter is spot on. It actually follows the >> adjustment for the Main Rx S-meter, i.e., set Main Rx at an >> extreme and >> the Sub Rx shows the exact same extreme. >> >> So... it looks to me like there is no reason to have a separate >> adjustment for the SubRx S-meter. I'm sure the manual will catch >> up. >> >> 73, >> Ken K3IU > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
