Re: [Elecraft] KXPA100 Power Out Issue
Hi,The Operators manual rev A7, says a minimum of 13.8 v to get !00 W output. There have been several posts in the past that if the dc is less than 13.8 results in less than 100 w output from the KXPA100. 73Jim HK7SSS In a message dated 9/7/2020 11:38:19 AM Pacific Standard Time, n...@comcast.net writes: I have noticed over the past weeks that my KXPA100 will not put out any morethan 70-80 watts when I am running my KX3 showing 100 watts output. Theattenuator is not on. I have two antennas. One is a 3 element yagi that isbelow 1.2:1 on all bands without the tuner, so when I tune, it just tweaksit. Still only 80 W out. My other antenna is a MyAntennas 10-80 EFHW, alsoresonant below 1.5:1 on 80 and 40, the primary bands I operate on. I get 70watts out on that antenna. Everything is grounded properly. This is afairly recent issue. I have tried the amp with my KX2 as well, to make sure it is an amp problemand not a radio problem, and I get the same result of reduced power output. Any thoughts? Thanks, Terry N7TB__ __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] KXPA100 Power Out Issue
Have you done/redone the Power Output Display Calibration? See Appendix B in the manual. Grant NQ5T > On Sep 7, 2020, at 2:35 PM, Terry Brown wrote: > > I have noticed over the past weeks that my KXPA100 will not put out any more > than 70-80 watts when I am running my KX3 showing 100 watts output. The > attenuator is not on. I have two antennas. One is a 3 element yagi that is > below 1.2:1 on all bands without the tuner, so when I tune, it just tweaks > it. Still only 80 W out. My other antenna is a MyAntennas 10-80 EFHW, also > resonant below 1.5:1 on 80 and 40, the primary bands I operate on. I get 70 > watts out on that antenna. Everything is grounded properly. This is a > fairly recent issue. > > > > I have tried the amp with my KX2 as well, to make sure it is an amp problem > and not a radio problem, and I get the same result of reduced power output. > > > > Any thoughts? > > > > Thanks, > > > > Terry > > N7TB > > > > > > __ > 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 > Message delivered to ghyoung...@gmail.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 Message delivered to arch...@mail-archive.com
[Elecraft] KXPA100 Power Out Issue
I have noticed over the past weeks that my KXPA100 will not put out any more than 70-80 watts when I am running my KX3 showing 100 watts output. The attenuator is not on. I have two antennas. One is a 3 element yagi that is below 1.2:1 on all bands without the tuner, so when I tune, it just tweaks it. Still only 80 W out. My other antenna is a MyAntennas 10-80 EFHW, also resonant below 1.5:1 on 80 and 40, the primary bands I operate on. I get 70 watts out on that antenna. Everything is grounded properly. This is a fairly recent issue. I have tried the amp with my KX2 as well, to make sure it is an amp problem and not a radio problem, and I get the same result of reduced power output. Any thoughts? Thanks, Terry N7TB __ 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 Message delivered to arch...@mail-archive.com
