After reading your numbers here I was curious since my K3 is the same vintage as yours, serial 732, Apr'08. I did a quick check on 20M and I am reading 15.5A, @13.5V (on my Astron 20M meters) at 100W into a 50 ohm dummy load. I checked other bands and read the following: 160M-15.5A, 75M-14A, 40M-14A, 15M-13.6A, 10M-13A. All readings were in the tune position using a LP-100. I don't think the higher reading on 20 (or 160) is really significant.
Russ, N3CO Sent from Yahoo Mail on Android On Fri, Jun 19, 2020 at 1:55 PM, Mike Maloney<[email protected]> wrote: FWIW, my old K3 (Nov'08) only pulls 17.8Adc at 12.5V for 100W into 50ohm dummy load at 14MHz. Seems to follow your PA temp is gonna run hotter also. WHY such poor efficiency Elecraft, (Wayne) ? 73,Mike, AC5P On Friday, June 19, 2020, 12:03:45 PM CDT, Randy Farmer <[email protected]> wrote: Mine does exactly the same thing. I even ran it through factory service to be sure there wasn't a problem with the LPF module that might be causing trouble. They calibrated it and returned it with a clean bill of health. It still draws significantly more current on 20 than on any other band. 73... Randy, W8FN On 6/19/2020 8:46 AM, Rich wrote: > I just received my K3S back from repair and all seemed OK. However it > appears to draw much more current on 20M than any other band. 22 - > 24 amps. I have tried two different 20m antennas and a dummy load. > > All other bands are 20 amps or lower. Some as low at 17amps. > > Power Supply voltage per K3s display 14.0v standby and 13.3 on TX > > First off is this actually something of concern? > > I hate to do a calibration as it was just done by Elecraft service two > weeks ago. ______________________________________________________________ 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 Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
