The KX3 and the KXPA100 tuners are bypassed Charlie
Sent from my iPad > On May 12, 2018, at 13:43, Rick WA6NHC <[email protected]> wrote: > > Probably a silly question: Did you turn off the tuner in the amp (bypass > it)? If not, it should be off. > > Rick nhc > > >> On 5/12/2018 10:31 AM, Grant Youngman wrote: >> Given you already have an SWR of 1.5 or less with the hexnbeam, the MFJ >> tuner is just adding loss. >> >> It could be the KXPA100 doesn’t like the AL-811 input circuits. If the SWR >> is low (on the KXPA100) with the 811 bypassed, and high when the 811 is in >> line, then I’d suspect the 811 input. You could try putting a dummy load on >> the amp, the Daiwa 901 between the KXPA100 and the amp, and see how the KXPA >> and Daiwa compare. Or turn on the antenna tuner on in the KXPA and see if >> it can tune out the reactance of the amp input. You may just need to adjust >> the 811 input network for a better SWR. The networks on my AL-1200 aged >> into an SWR of around 2.5. I always ran my K3 autotuner when driving the >> amp — too lazy to take off the 927 screws to remove the AL-1200 cover, slide >> it back, and adjust the input networks. >> >> >> Grant NQ5T >> K3 #2091, KX3 #8342 >> >>> On May 12, 2018, at 1:03 PM, Charles Carlon <[email protected]> wrote: >>> >>> >>> >>> Guys— >>> >>> My KX3 is currently connected to my KXPA100 and is used to drive an >>> Ameritron AL-811. The setup is as follows >>> >>> KX3——KXPA100——AL-811——MFJ-994B tuner—Daywa CN901—-Hexbeam >>> >>> The KX3 and the KXPA100 auto-tunners are off. I tune with the MFJ with the >>> amp in bypass. >>> The Hexbeam is resonate at 1.5 or less before tuning. I us an Ameritron >>> ARB-704 to key the amp. >>> >>> When I transmit the SWR LEDs On the KXPA100 are peaked out. >>> Daywa to the antenna shows less than 1.2 SWR. >>> >>> Am I doing something wrong here. I am using about 20W from the KX3 to >>> drive the Amp to about 450W >>> >>> >>> >>> Thanks >>> Charlie >>> N7CAC >>> ______________________________________________________________ >>> 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] ______________________________________________________________ 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]
