Have you tried any testing with a 50 ohm dummy load? After the KX3, after the KXPA, after the AL80b? Seems like that would let you isolate who the culprit is.
Just my $0.02 Brian. K0DTJ > On Mar 9, 2014, at 18:07, rldil...@aol.com wrote: > > > The high SWR happens even when the AL80b or Palstar tuner is not connected. > In other words when coax from the kpxa100 goes direct to the K4KIO Hexx beam > with nothing in between to confuse the amp except a barrel connector. > > Yes you can drive a larger amp with the kx3 and KXPA100. It is covered on > page 19 of the manual in paragraph titled Keying an External Amplifier. > > > -----Original Message----- > From: Dr. William J. Schmidt, II <b...@wjschmidt.com> > To: rldillon <rldil...@aol.com>; elecraft <elecraft@mailman.qth.net>; KX3 > <k...@yahoogroups.com> > Sent: Sun, Mar 9, 2014 8:49 pm > Subject: RE: [Elecraft] KXPA100 SN 707 Total Frustration with this Amp > > > Am I reading this correctly? You are driving an AL80B with the KXPA100 > being driven by the KX3? That's quite imaginative if that's correct. The > SWR fault is coming from the AL80B input circuit not your antenna (the KXPA > can't see the SWR on the other side of the AL80B). probably something bad > in the input circuit of the AL80B causing the high SWR... > > > Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ > > Owner - Operator > Big Signal Ranch > Staunton, Illinois > > email: b...@wjschmidt.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 ______________________________________________________________ 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
