Re: [Elecraft] [K3] Sub RX S-meter cal
I also noticed this the other day when I was messing about with the RF Gain Calibration and then wanted to recheck the S-meter calibration. Thought I probably had a button-push sequence messed up, but I wasn't able to finish the job for the SubRx. 73, Ken K3IU Mike Harris wrote: G'day, Has anyone managed to use the proceedure in the handbook to calibrater the sub-rx s-meter? The metering is switched over to the sub-rx when in b SET mode. However, as soon at you go into CONFIG the s-meter reverts to the main rx making callibration impossible. This can be checked by rotating the main rx rf gain counter clockwise, the s-meter reading changes. Unless, that is, I'm doing something terribly wrong. I never bother with the sub-rx s-meter in normal operation but the implication is that it is adjustable. Regards, Mike VP8NO __ 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
Re: [Elecraft] [K3] Sub RX S-meter cal
There is an error in the manual according to Wayne and you cannot calibrate the sub rx S-meter. John N1JM Mike Harris wrote: G'day, Has anyone managed to use the proceedure in the handbook to calibrater the sub-rx s-meter? The metering is switched over to the sub-rx when in b SET mode. However, as soon at you go into CONFIG the s-meter reverts to the main rx making callibration impossible. This can be checked by rotating the main rx rf gain counter clockwise, the s-meter reading changes. Unless, that is, I'm doing something terribly wrong. I never bother with the sub-rx s-meter in normal operation but the implication is that it is adjustable. Regards, Mike VP8NO __ 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 -- View this message in context: http://n2.nabble.com/K3-Beta-Firmware-Rev-3-41-Improved-RX-bass-response-Flat-DATA-mode-EQ-Live-memory-recall-etc-tp3773055p3782179.html Sent from the [K3] 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
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 ~~ N1JM wrote: There is an error in the manual according to Wayne and you cannot calibrate the sub rx S-meter. John N1JM Mike Harris wrote: G'day, Has anyone managed to use the proceedure in the handbook to calibrater the sub-rx s-meter? The metering is switched over to the sub-rx when in b SET mode. However, as soon at you go into CONFIG the s-meter reverts to the main rx making callibration impossible. This can be checked by rotating the main rx rf gain counter clockwise, the s-meter reading changes. Unless, that is, I'm doing something terribly wrong. I never bother with the sub-rx s-meter in normal operation but the implication is that it is adjustable. Regards, Mike VP8NO __ 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
Re: [Elecraft] [K3] Sub RX S-meter cal
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
Re: [Elecraft] [K3] Sub RX S-meter cal
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
[Elecraft] [K3] Sub RX S-meter cal
G'day, Has anyone managed to use the proceedure in the handbook to calibrater the sub-rx s-meter? The metering is switched over to the sub-rx when in b SET mode. However, as soon at you go into CONFIG the s-meter reverts to the main rx making callibration impossible. This can be checked by rotating the main rx rf gain counter clockwise, the s-meter reading changes. Unless, that is, I'm doing something terribly wrong. I never bother with the sub-rx s-meter in normal operation but the implication is that it is adjustable. Regards, Mike VP8NO __ 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
