Dear Wayne, I was also puzzled by this. After I finished the RX gain calibration on the main receiver (no sub-receiver installed), the XG-2 at 50 uV showed S8. Maybe the "finish" page in the K3 Utility RX calibration routine should say what the user should do now: Which CONFIG items to adjust and, if any, which ones NOT to adjust.
BTW, what should the CONFIG:SMTR MD be set to during this calibration? NOR or ABS? Or does it matter? 73, Oliver Johns W6ODJ On 7 Oct 2009, at 1:13 PM, Wayne Burdick wrote: > 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" <[email protected]> > 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" <[email protected]> >> To: "N1JM" <[email protected]> >> Cc: <[email protected]> >> 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:[email protected] >> >> 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:[email protected] > > 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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
