[Elecraft] Antenna Question for KX1

[Don Wilhelm]

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
>
>