KX3 KXPA100
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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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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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: [hidden email] [mailto:[hidden email]] On Behalf Of G7KXZ Sent: Tuesday, March 04, 2014 10:14 AM To: [hidden email] 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:[hidden email] 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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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" <[hidden email]> 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: [hidden email] [mailto:[hidden email]] On Behalf Of G7KXZ > Sent: Tuesday, March 04, 2014 10:14 AM > To: [hidden email] > 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:[hidden email] > > 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:[hidden email] > > 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Thanks for the quick response
Much appreciated. The PA CAL has made things a whole lot better across the bands. Just worked W1AW/P0 on 10m running 25w to a Buddipole Who needs QRO just use the right band and propagation ;) 73 Kev Sent from my iPhone5 > On 4 Mar 2014, at 18:21, Matt VK2RQ <[hidden email]> 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" <[hidden email]> 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: [hidden email] [mailto:[hidden email]] On Behalf Of G7KXZ >> Sent: Tuesday, March 04, 2014 10:14 AM >> To: [hidden email] >> 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:[hidden email] >> >> 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:[hidden email] >> >> 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by vk2rq
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 <[hidden email]> 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" <[hidden email]> 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: [hidden email] [mailto:[hidden email]] On Behalf Of G7KXZ >> Sent: Tuesday, March 04, 2014 10:14 AM >> To: [hidden email] >> 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:[hidden email] >> >> 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:[hidden email] >> >> 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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