have you tried parking a stupid load (oops dummy load) at the top end of
the tower - far end of coax - to see if the coax might not be the source
of your problems...
I would not be surprised ot hear it was... or, a connector which is on
its last legs...
> Here's the problem: A Hy-Gain TH3-Mk4 tribander works fine at 100 watts...
> but with a KW the SWR goes up when used for an hour or so at 50% duty cycle.
> pulled the traps and all looked well except for a couple loose screws which I
> tightened but it didn't solve the problem. I have also tried replacing the
> balun without success.
> Any idears what could be the culprit?
> Dick- K9OM
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
> questions and ask for Sherman, W2FLA.
> TowerTalk mailing list