The tuner is rated at 3 kw I think.
I can set the SWR and leave it set without transmitting and the swr will 
change.
That's why I suspected bad coax.
Thanks for the suggestions.
----- Original Message ----- 
From: "Gale Conard" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, September 22, 2009 12:57 PM
Subject: Re: SWR problem.


> Rick,
>
> Yes, it could be bad coax or bad connections along the line from the
> transceiver to the antenna.
>
> If you are transmitting during the times between readings, it could, also,
> be heating in the MFJ tuner.
>
> I have gone through several MFJ tuners which overheated and softened the
> insulating strips in the tuner coils, thus changing the induction of the
> coils.  With MFJ you probably should have a tuner rated for twice or three
> times the power you are putting out from the amplifier.
>
> Good luck.
>
>
> 73,
> Gale
> [log in to unmask]