Is the coax ok? Add or remove length from antenna. Guessing interaction between coax & antenna. This should demonstrate that pretty quick.
What is the impedance range of auto tuner? "Don Wilhelm" <[EMAIL PROTECTED]> wrote: __________ >Paul, > >A balun may or may not help. and in any case, a balun or no balun is not the >answer to your situation - the 20 ft of coax is acting like an impedance >transformer, and without a thorough analysis of your antenna and feedline >system, it is difficult to say what would help. Perhaps some >experimentation is in order - add a 4:1 balun and see what happens, simlarly >try a 1:1 balun, try changing the length of the parallel feedline, and try >changing the length of the coax. All these things will influence the >results, as will changing the length of the antenna wires. If you do not >have adequate instrumentation to analyze the system, then a bit of old >fashioned 'cut and try' may be the way to properly answer your questions - >in any case, keep notes of what happens so you will know which way to go >when making future changes. When you find something that works, rejoice and >let us know, perhaps some of us can give you some info relating to why it >works. > >73, >Don W3FPR > >> -----Original Message----- >> >> I have been playing with my KX1 in the back yard the last week or so and >> found that about 26ft of wire in the hot side of the bnc >> connector and about >> the same to the cold side gets me a good match with the built in ATU on >> 40,30,20m >> >> Now if I use the same wires but add 20ft of coax between the >> radio and these >> wires I find it very hard to get a match on any band, do I need to use a >> balun at the end of the coax? >> >> Any thoughts >> >> Paul >> >> M0BMN >> >> > >_______________________________________________ >Elecraft mailing list >Post to: [email protected] >You must be a subscriber to post to the list. >Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > >Help: http://mailman.qth.net/subscribers.htm >Elecraft web page: http://www.elecraft.com >. _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
