At our IOTA site we were using 450 line as tuned feeders to a pair of orthogonal multiband doublets. We had the 450 line tied for support in the almost constant 15 knot sea breeze. At some point something flapped into a loop and pinched the conductors closer together on one of the lines. It wacked all the K3 auto-tuner settings and you couldn't switch back and forth without retuning. It took us a while to spot the problem.
73, Guy. On Mon, Dec 6, 2010 at 2:44 AM, Gary Gregory <[email protected]> wrote: > Hi Tony, > > The open wire feeder was at fault as the route I had used had a bend which > made a parallel path and when I straightened this out the issue went away. > > All is now as it should....:-) > > Thanks for the info mate. > > Gary > > On Mon, Dec 6, 2010 at 7:58 AM, Tony Estep <[email protected]> wrote: > >> > >> > On 12/05/2010 11:40 PM, [email protected] wrote: >> > > From: Gary Gregory<[email protected]> >> > >...using a double extended zepp I find it tunes all bands except 20M >> > > consistently but for a couple of weeks it has been fine. >> > > >> > > The KAT3 will tune to 1.1:1 BUT the swr meter fluctuates... >> >> Gary, in my case the fluctuating SWR indication turned out to be >> attributable to my station ground setup. It seems that just a small amount >> of RF on the feedline can create this symptom. My non-resonant antenna >> comes >> into a balun, then the coax goes through a line isolator, and thence to the >> rig. There is a counterpoise arrangement connected at the balun which has >> served satisfactorily to ground everything with a couple of antennas. >> However, when I put up a new one, I got the symptom you describe. Some >> tweaking of the grounding scheme completely cured it. >> >> Tony KT0NY >> ______________________________________________________________ >> 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 >> > > > > -- > Gary > VK4FD - Motorhome Mobile > http://www.qsl.net/vk4fd/ > K3 #679, P3 #546 > For everything else there's Mastercard!!! > ______________________________________________________________ > 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 > ______________________________________________________________ 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
