I have had the coax connector between the ladder line and the coax arc over with high power on 75. Might check that. George, W3HBM
On 1/27/2019 8:49 AM, Dave wrote: > Also check the ladder line at the ends for possible breaks. > > I had one of the “optimized” G5RV antennas sold by W8AMZ which used solid > wire in the ladder line. Due to flexing in the wind the wire broke where it > entered the epoxyed pvc end cap (SO-239 connector) the plastic jacketing was > still in place so the wire would be fine under 20 watts tune but would arc > under high power. > > The fix was to rebuild the antenna using copper clad stranded ladder line. > > Dave wo2x > > Sent from my iPad > >> On Jan 27, 2019, at 8:28 AM, Jack Satterfield <j...@satterfield.org> wrote: >> >> Michael..good suggestion, will do later when the rain stops. >> >> Thanks, >> >> Jack >> >> W4GRJ >> >> >> >> From: Michael Blake [mailto:k9...@mac.com] >> Sent: Sunday, January 27, 2019 8:17 AM >> To: Jack Satterfield >> Cc: Elecraft Reflector >> Subject: Re: [Elecraft] KAT500/KPA500 issue >> >> >> >> Jack, I had a similar thing happen and it turned out to be a tree branch had >> grown into the antenna path and when on high power the antenna was arcing to >> the tree branch. Might not be a tree branch but look for any signs of >> possible arching in the antenna, feed line or connectors. >> >> >> >> 73 - Mike - K9JRI >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> On Jan 27, 2019, at 8:10 AM, Jack Satterfield <j...@satterfield.org> wrote: >> >> >> >> After 5 years of perfect operation, now a very strange issue >> >> Bypass SWR 3 or 4:1 >> >> KAT500 tunes to 1.3:1 >> >> Switch amp to operate, operating SBB on first voice KAT500 goes full scale >> swr and amp faults on high swr >> >> Never had a issue before, antenna is g5rv >> >> Any ideas appreciated. >> >> Jack >> >> W4GRJ >> >> >> >> ______________________________________________________________ >> 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 k9...@mac.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 rocke...@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 gkid...@ilstu.edu > ______________________________________________________________ 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
