I think I may have found the problem, although not tested My dummy load has gone open circuit ( at QRP Power it matches 1:1 anything over 10w and it goes to 6:1 !!!!!! Its now in the bin.....
The losses are obviously reflected.... I will post again when tested with a 'functional' dummy load Cheers Kevin On 4 Mar 2014, at 18:21, Matt VK2RQ <[email protected]> wrote: > First check the supply voltage to the amp -- if you're not giving it at least > 13,8V you may find it winds back the max output power. > > 73, Matt VK2RQ > >> On 5 Mar 2014, at 4:36 am, "Cady, Fred" <[email protected]> wrote: >> >> Hi, >> There is a power calibration that you can do. This is from the KX3 firmware >> notes for KX3 firmware 1.76. Maybe you can try that. >> >> MCU 1.76 / DSP 1.27, 11-20-2013 >> >> * MENU:PA MODE NOW HAS POWER-OUT CAL (P out CAL) SETTING: This enables 75-W >> power calibration in TUNE mode. When PWR is adjusted, and "P out CAL" mode >> is in effect, setting power to 75 watts shows "CAL 75W" on VFO B. >> >> * KXPA100 DRIVE POWER CAL DATA UTILIZED: If the KXPA100's per-band 75-W >> drive power has been saved at the factory, the KX3 will use it. If not, the >> KX3's own per-band amplifier drive data is used (if available). This data is >> created by setting PA MODE to Pout CAL (see above), then doing a TUNE on >> each band at 75 W. >> >> >> Cheers, >> Fred KE7X >> >> "The Elecraft K3: Design, Configuration and Operation 2nd ed" >> "The Elecraft KX3 - Going for the summit" >> www.ke7x.com or www.lulu.com >> KPA500 and KAT500 Quick Set Up Guide >> http://www.ke7x.com/home/k-line-introduction-and-set-up-guide >> (Coming soon: "The Elecraft KPA500 and KAT500 - the K-Line Dream Station") >> >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of G7KXZ >> Sent: Tuesday, March 04, 2014 10:14 AM >> To: [email protected] >> Subject: [Elecraft] KX3 KXPA100 >> >> Hi All, >> >> I have had my KX3 for some time, just completed a kit KXPA100 with Tuner. >> >> Testing all works well, ATU tunes very well. Audio reports on TX good. >> >> My issue is with the Power out LED's and the Utility program monitoring the >> power. I do not have an accurate Power Meter Output appears as indicated not >> to exceed 70W >> >> The LEDs follow the Utility program (makes sense) Can an adjustments be >> made? >> I am off to EA8 land on Monday......... and would like to run 100w and not >> 12w !!! >> >> Att On >> SWR 1:1 >> KX3 Dial= 25W >> Utility Input= 0.4 >> Utility Forward= 7 >> Dissipated= 52 >> Relected= 0.0 >> >> SWR 1:1 >> KX3 Dial= 50W >> Utility Input= 1.2 >> Utility Forward= 20 >> Dissipated= 74 >> Relected= 0.1 >> >> SWR 1:1 >> KX3 Dial= 75W >> Utility Input= 2.1 >> Utility Forward= 36.5 >> Dissipated= 87 >> Relected= 0.3 >> >> SWR 1:1 >> KX3 Dial= 100W >> Utility Input= 4 >> Utility Forward= 64 >> Dissipated= 96 >> Relected= 0.4 >> >> SWR 1:1 >> KX3 Dial= 110W >> Utility Input= 5 >> Utility Forward= 75 >> Dissipated= 96.5 >> Relected= 0.4 >> >> >> >> ______________________________________________________________ >> 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 >> ______________________________________________________________ >> 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 ______________________________________________________________ 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
