Re: [Elecraft] Elecraft] K3 Power calibration and current consumption
Ken Kopp-3 wrote: There is one additional form of optional calibration: the K3's wattmeter. See CONFIG:WMTR in the owner's manual. This is the method I eventually discovered to make the K3's wattmeter and the external reference wattmeter agree. The correction factor is 074 for my K3. It seems that this adjustment would be part of the procedure on page 49. I stumbled on it by accident, so to speak. (:-) 73! Ken - K0PP ??? Calibration Procedures on page 48 of the Rev D1 Manual has Wattmeter Cal right after Synthesizer Cal and just before Transmitter Gain Cal. Maybe you either have an old manual or missed it. It's also mentioned on page 66 of the Rev E Assembly Manual but that manual refers you to the Owner's Manual for detailed instructions on all Calibration Procedures. 73, Bill -- View this message in context: http://n2.nabble.com/Elecraft--K3-Power-calibration-and-current-consumption-tp2393474p2395019.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: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] Elecraft] K3 Power calibration and current consumption
FWIW, it's on pg 46 in my original Rev C1 (11/18/07) manual, so it's been around for quite a while. ??? Calibration Procedures on page 48 of the Rev D1 Manual has Wattmeter Cal right after Synthesizer Cal and just before Transmitter Gain Cal. Maybe you either have an old manual or missed it. 73, Mike KW1ND __ 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] Elecraft] K3 Power calibration and current consumption
Is this not the same thing as the automated Configure Transmitter Gain in the Elecraft Utility? Gary KA1J FWIW, it's on pg 46 in my original Rev C1 (11/18/07) manual, so it's been around for quite a while. ??? Calibration Procedures on page 48 of the Rev D1 Manual has Wattmeter Cal right after Synthesizer Cal and just before Transmitter Gain Cal. Maybe you either have an old manual or missed it. 73, Mike KW1ND __ 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] Elecraft] K3 Power calibration and current consumption
Gary Smith wrote: Is this not the same thing as the automated Configure Transmitter Gain in the Elecraft Utility? No it's not. It's calibrating the K3's internal power meter to an external standard. It's not absolutely necessary to do Power Meter calibration but TXG is necessary. 73, Bill -- View this message in context: http://n2.nabble.com/Elecraft--K3-Power-calibration-and-current-consumption-tp2393474p2395819.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: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 Power calibration and current consumption
I may well be the only one caught by this, but be sure that the TRANSMITTER GAIN procedure on pages 49 and 50 of the manual has been done, but also include the 100W level. IMO, the first paragraph under WATTMETER on page 49 should read ... 5 W, 50 W , 100 W (K3/100 only) etc. If you only use the Utility's calibration procedure as suggested in the second paragraph under TRANSMITTER GAIN on page 49, the 100W level will --not-- be calibrated. If there's a reference in the manual to setting the 100W output level, I've overlooked it. I spent a number of hours trying to get my external Bird(s) and the dialed-up power level to agree. In my case the PA was delivering 110 - 115 watts to the dummy load at the dialed up 100W setting. This condition might account for higher than expected current consumption. Once I set the gain level at 100W and then ran the Utility's calibration routine, the Bird(s) and the dialed up power agree throughout the 0-100W range. (:-) 73! Ken Kopp - K0PP elecraftcov...@rfwave.net __ 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 Power calibration and current consumption
Hi Ken, There isn't any 100 W calibration on the K3. All gain calibration is done at 5 and 50 W (and optionally 1 mW if you have a KXV3). These are the points we picked do the cal, and the firmware then extrapolates from there. So, how accurate the rig is at any setting from 13 to 100 W depends on whether you've done the 50 W calibration. There is one additional form of optional calibration: the K3's wattmeter. See CONFIG:WMTR in the owner's manual. 73, Wayne N6KR On Feb 26, 2009, at 7:42 AM, Ken Kopp wrote: I may well be the only one caught by this, but be sure that the TRANSMITTER GAIN procedure on pages 49 and 50 of the manual has been done, but also include the 100W level. IMO, the first paragraph under WATTMETER on page 49 should read ... 5 W, 50 W , 100 W (K3/100 only) etc. --- http://www.elecraft.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
[Elecraft] Elecraft] K3 Power calibration and current consumption
Hi Ken, Thank you for responding Wayne. There isn't any 100 W calibration on the K3. All gain calibration is done at 5 and 50 W (and optionally 1 mW if you have a KXV3). These are the points we picked do the cal, and the firmware then extrapolates from there. So, how accurate the rig is at any setting from 13 to 100 W depends on whether you've done the 50 W calibration. There is one additional form of optional calibration: the K3's wattmeter. See CONFIG:WMTR in the owner's manual. This is the method I eventually discovered to make the K3's wattmeter and the external reference wattmeter agree. The correction factor is 074 for my K3. It seems that this adjustment would be part of the procedure on page 49. I stumbled on it by accident, so to speak. (:-) 73! Ken - K0PP On Feb 26, 2009, at 7:42 AM, Ken Kopp wrote: I may well be the only one caught by this, but be sure that the TRANSMITTER GAIN procedure on pages 49 and 50 of the manual has been done, but also include the 100W level. IMO, the first paragraph under WATTMETER on page 49 should read ... 5 W, 50 W , 100 W (K3/100 only) etc. __ 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
