K2 S meter indications
Locked
K2 S meter indications
 
|
GM OM,
I have gone through the S meter Zero and Sensitivity a couple of times and am sure I'm doing it BTB, but indications of incoming signals seem low to me. Signals that I think should be a least a 7 or even a 9 are indicated as a 2 or 3? I even put the DSP in bypass before calebrating the S meter the last time wondering if that might have something to do with it. No joy! Any thoughts out there? 73 mike-kb3qja ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
Mike,
First make sure you have the RF Gain set fully clockwise, and then adjust the AGC Threshold to 3.8 volts or a little lower (never higher). The adjust CAL S-LO with no antenna connected just to the point where there are no bars illuminated in any mode. Now, if you have a source of 50 uV RF (-73dBm) like the Elecraft XG1, XG2, or XG3, tune in that signal and adjust CAL S HI to indicate S-9. If you do not have such a signal generator, you can adjust it "like the book" and turn the RF Gain to minimum and adjust CAL S HI to illuminate all 10 bars (or the 10th bar if you have graph in dot mode) and let it go at that. Alternately, if you have a steady on-the-air signal that you believe should register S-9, adjust CAL S HI until that signal does read S-9. The K2 (and K3) S-meter can be calibrated to the S-9 equals -73 dBm "standard", but for a long time, many receiver and transceiver manufacturers designed their S-meters to get a LOT of "needle swing", so if you are comparing with other transceivers that you are accustomed to, you will find the K2 s-meter "stingy". As I indicated, you can "perk it up" by setting CAL S HI to a lower number. 73, Don W3FPR On 7/30/2011 11:55 AM, vicki glover wrote: > GM OM, > I have gone through the S meter Zero and Sensitivity a couple of times and am sure I'm doing it BTB, but indications of incoming signals seem low to me. Signals that I think should be a least a 7 or even a 9 are indicated as a 2 or 3? I even put the DSP in bypass before calebrating the S meter the last time wondering if that might have something to do with it. No joy! Any thoughts out there? > 73 > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
Mike,
I forgot to add that for best results, do those adjustments on 40 meters with the preamp OFF. You will then find the readings are about right for those bands where you would normally use the preamp (20 meters and above). 73, Don W3FPR On 7/30/2011 1:43 PM, Don Wilhelm wrote: > Mike, > > First make sure you have the RF Gain set fully clockwise, and then > adjust the AGC Threshold to 3.8 volts or a little lower (never higher). > The adjust CAL S-LO with no antenna connected just to the point where > there are no bars illuminated in any mode. > Now, if you have a source of 50 uV RF (-73dBm) like the Elecraft XG1, > XG2, or XG3, tune in that signal and adjust CAL S HI to indicate S-9. > If you do not have such a signal generator, you can adjust it "like the > book" and turn the RF Gain to minimum and adjust CAL S HI to illuminate > all 10 bars (or the 10th bar if you have graph in dot mode) and let it > go at that. > Alternately, if you have a steady on-the-air signal that you believe > should register S-9, adjust CAL S HI until that signal does read S-9. > > The K2 (and K3) S-meter can be calibrated to the S-9 equals -73 dBm > "standard", but for a long time, many receiver and transceiver > manufacturers designed their S-meters to get a LOT of "needle swing", so > if you are comparing with other transceivers that you are accustomed to, > you will find the K2 s-meter "stingy". As I indicated, you can "perk it > up" by setting CAL S HI to a lower number. > > 73, > Don W3FPR > > On 7/30/2011 11:55 AM, vicki glover wrote: >> GM OM, >> I have gone through the S meter Zero and Sensitivity a couple of times and am sure I'm doing it BTB, but indications of incoming signals seem low to me. Signals that I think should be a least a 7 or even a 9 are indicated as a 2 or 3? I even put the DSP in bypass before calebrating the S meter the last time wondering if that might have something to do with it. No joy! Any thoughts out there? >> 73 >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
«
Return to [K2]
|
1 view|%1 views
| Free forum by Nabble | Edit this page |