Turn the RF gain full cw and see if the S Meter is acting normal.
Oliver Johns wrote: > > 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 > > ----- Dan AB3EN -- View this message in context: http://n2.nabble.com/S-meter-calibration-tp3784377p3784961.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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
