Have you checked your KAT500 with a dummy load instead of feed line? This would tell you either your KAT500 or feed line to antenna (and antenna) is in trouble.
73 de JH3SIF, Keith > 2016/02/05 6:17、Bill <w2...@nycap.rr.com> のメール： > > For the past month I have been experiencing tuning problems with the KAT500. > > The antenna in question is a simple 75 meter dipole fed with coax. You tune > the antenna at 3922, 2955 and 3975 - just for example. When you return to > those frequencies, a few hours later, the tuning is all off and the KPA500 > demos its displeasure by beeping and flashing lights. Retuning will again > hold for a few hours, then all goes haywire again. > > I have given shake test to the antenna/halyards - with an analog SWR bridge > in line - and see nothing to indicate breaks or damage. I replaced the feed > line and it still does everything the same. All coax lines inside have also > been changed out - to no avail. > > I should mention that this problem exists on an alternate antenna also. The > alternate is also a dipole type. No remote baluns, nothing other than simple > center insulators. Chances are they are built properly - been doing it for > over 55 years and have never experienced anything like this. > > I have reset the KAT500 to default a couple of times - reinstalled the > software - all the things you do with black boxes - went through the training > thing. I spoken with Elecraft and followed their instructions to the letter > also (which were the same as what I had been doing). It all holds well for a > few hours, then goes wacko. > > If I have to push the buttons every time I QSY, there is little reason to > continuing using the KAT500. Of course that makes using the KPA500 more > difficult or impossible. > > Shipping is expensive and so are service charges - the tuner is way out of > warranty. > > Anyone have experiences such as these or suggestions? > > I am seriously considering regressing to a manual tuner. > > Thanks, > > Bill W2BLC K-Line > > > > ______________________________________________________________ > 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 jh3...@sumaq.jp ______________________________________________________________ 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
