Re: [Elecraft] [K3] Why K3 appears noisy?
Dunc Carter - W5DC wrote: > > I haven't read all the details but I have the impression that you need > to be able to set 1 and 50 microvolts which requires rather considerable > attenuation for some common signal generators such as my Elenco SG > 9500. Is my impression correct? > For the RF Calibration Utility you only need a 50 uV source. For S-Meter Calibration you need 1 uV in addition to 50 uV. The factory defaults for both are for "average" units. To achieve custom calibration for variations in individual units, you need to do individual calibrations. The RF Calibration (in the K3 Utility) is totally automatic once you apply a 50 uV source. S-Meter calibration (in the operating manual) is a little more involved but still quite easy to do. 73, Bill -- View this message in context: http://n2.nabble.com/Why-K3-appears-noisy-tp4181768p4196785.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] Why K3 appears noisy?
Dunc Carter - W5DC wrote: > > I haven't read all the details but I have the impression that you need > to be able to set 1 and 50 microvolts which requires rather considerable > attenuation for some common signal generators such as my Elenco SG > 9500. Is my impression correct? > For the RF Calibration Utility you only need a 50 uV source. For S-Meter Calibration you need 1 uV in addition to 50 uV. The factory defaults for both are for "average" units. To achieve custom calibration for variations in individual units, you need to do individual calibrations. The RF Calibration (in the K3 Utility) is totally automatic once you apply a 50 uV source. S-Meter calibration (in the operating manual) is a little more involved but still quite easy to do. 73, Bill -- View this message in context: http://n2.nabble.com/Why-K3-appears-noisy-tp4181768p4196777.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] Why K3 appears noisy?
I haven't read all the details but I have the impression that you need to be able to set 1 and 50 microvolts which requires rather considerable attenuation for some common signal generators such as my Elenco SG 9500. Is my impression correct? On the Clifton Laboratories web site, there is a graph labeled Elecraft K3 Transceiver Incremental Incremental RF Gain Reduction 9dB) versus RF Gain Value. Is this effect along with basic calibration that the gain calibration is intended to correct? My K3 doesn't have the discontinuity or discontinuities that others have mentioned; I just curious. See: http://www.cliftonlaboratories.com/elecraft_k3_and_manual_rf_gain_control.htm Dunc, W5DC Radio Amateur N5GE wrote: > On Sun, 20 Dec 2009 07:53:45 -0800 (PST), "Julian, G4ILO" > wrote: > > In answer to K2MK's question... > > You need to do the RF Gain calibration with a signal generator to be > most accurate, but you don't have to buy the XG2. You could use any > signal generator. > > Tom, N5GE > > n...@n5ge.com > K3 #806 with SUB RX, K3 #1055, PR6, > XV144, XV432, KRC2, > W1, 2 W2's and other small kits > > 1 K144XV on order > > http://www.n5ge.com > http://www.swotrc.net > > > > >> >> Mike K2MK wrote: >> >>> I took a look at the RF Gain Calibration on the K3 Utility and they offer >>> two ways of doing it. One requires a signal generator and one uses factory >>> default values. Is the factory default method satisfactory or is it >>> necessary for us to purchase the XG2 to do the calibration properly. >>> >>> >> No "official" reply to this yet. I assumed that the factory default option >> was simply to restore the radio to its original state if the user wasn't >> happy after doing the calibration. >> >> - >> Julian, G4ILO. K2 #392 K3 #222. >> * G4ILO's Shack - http://www.g4ilo.com >> * KComm - http://www.g4ilo.com/kcomm.html >> * KTune - http://www.g4ilo.com/ktune.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 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] Why K3 appears noisy?
On Sun, 20 Dec 2009 07:53:45 -0800 (PST), "Julian, G4ILO" wrote: In answer to K2MK's question... You need to do the RF Gain calibration with a signal generator to be most accurate, but you don't have to buy the XG2. You could use any signal generator. Tom, N5GE n...@n5ge.com K3 #806 with SUB RX, K3 #1055, PR6, XV144, XV432, KRC2, W1, 2 W2's and other small kits 1 K144XV on order http://www.n5ge.com http://www.swotrc.net > > > >Mike K2MK wrote: >> >> I took a look at the RF Gain Calibration on the K3 Utility and they offer >> two ways of doing it. One requires a signal generator and one uses factory >> default values. Is the factory default method satisfactory or is it >> necessary for us to purchase the XG2 to do the calibration properly. >> > >No "official" reply to this yet. I assumed that the factory default option >was simply to restore the radio to its original state if the user wasn't >happy after doing the calibration. > >- >Julian, G4ILO. K2 #392 K3 #222. >* G4ILO's Shack - http://www.g4ilo.com >* KComm - http://www.g4ilo.com/kcomm.html >* KTune - http://www.g4ilo.com/ktune.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] Why K3 appears noisy?
Mike K2MK wrote: > > I took a look at the RF Gain Calibration on the K3 Utility and they offer > two ways of doing it. One requires a signal generator and one uses factory > default values. Is the factory default method satisfactory or is it > necessary for us to purchase the XG2 to do the calibration properly. > No "official" reply to this yet. I assumed that the factory default option was simply to restore the radio to its original state if the user wasn't happy after doing the calibration. - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://n2.nabble.com/Why-K3-appears-noisy-tp4181768p4194971.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
