[Elecraft] High SWR problem

[Don Wilhelm]

Edward,

After reading several of your responses, I still don't have a very good
picture of how your components (antenna wire, coax, ground braid, and
ATU/SWR meter) are connected together. And you have a balun in there
somewhere - why? and where is it connected.

If a combination like this is to work, you should have the 20 meter wire
connected directly to the back of the tuner - either on the center connector
of one of the coax jacks or to one side of the tuner's internal balun.  If
you use the tuner's internal balun, then the ground wire should connec to
the other side of the balun - if instead the antenna is fed from the center
connector of a coax connector, the ground will go on the ATU chassis (or to
the shell of the coax jack - should be the same).

So tell us where the coax and balun are in the system and what type of
balun - it could be possible that you are attempting to feed an effective
open circuit - which will not work.

73,
Don W3FPR

----- Original Message ----- |
| > Edward:
| > You don't give a lot of information to go on.  I gather your antenna is
| > 20 meters long.  Is it end fed or otherwise.  Supposing it is end fed,
does
| > that length include the feed line? or do you have a wire coming from
your
| > K2 that is 20 meters long total?  If the latter, that length wire is
going
| > to present a very high impedance on 40 meters (where it is a half wave)
and
| > above.  Perhaps the impedance is too high for your tuner to handle.
| >
|
| It's end fed (is there anyother way to feed a longwire ?) and it's 20m
long
| plus it's fed by some low-loss coax (with a balun).
|