The Cha250 b is NOT an antenna capable of greater than 100 watts for any length of time. It is a 5:1 unun hooked to a 23 foot aluminum radiator. It needs to be 30 feet in the air and if that happens it will function like a vertical OCFD. Still it is only good for 100 watts. When running a tuner with the KAT500 and KPA500 you are heating up the puny unun and the cores are totally being fried. Plus the reactance probably is generating high voltage on the short radiator causing arcs across any of the many connections inside the matching section. A guy fried a base section and I have it in the garage. That is your problem. I have owned 2 of the antennas and as such they work in a pinch and work well for fast POTA activation with 100 watts but other than that they are pretty much a megga compromise antenna. You would be way better off with a 998 mfg remote tuner and a 43 foot vertical over a radial field. Check out the Zero5 antennas for the cheapest durable 43foot vertical solution. 73, Morgan NJ8M BS + MS + $2.98 = COFFEE Real Life Experience = Priceless, says the man who set his back yard on fire with a breadboard tuner loading a 160 meter inverted L with 1000 watts. LOL
On Fri, Jan 12, 2024 at 4:28 PM Jim Brown <j...@audiosystemsgroup.com> wrote: > On 1/12/2024 1:46 PM, Paul Ecker wrote: > > Does this sound like a KAT 500 problem or maybe an RFI problem. > > It sounds like a problem somewhere after the output of the power amp, > including all interconnecting cables, the feedline, and the antenna. > Common problems are loose connectors and/or adapters, junk connectors > and/or adapters, connectors poorly installed, moisture somewhere in that > path, some defect in the antenna. > > The vast majority of connectors and adapters sold to hams are junk. If > it isn't stamped "Amphenol" or with a MIL-spec number, it's probably junk. > > 73, Jim K9YC > > ______________________________________________________________ > 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 mbaileyc...@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 arch...@mail-archive.com
