If it has an internal antenna tuner, try bypassing the tuner.
Sorry, zero experience with the O7
73/GL,
Barry N1EU
On Thu, Jun 16, 2016 at 11:00 AM, Michael Rutkaus <mrutkaus@gmail.com>
wrote:
> Re previous request for help, this is definitely heat related. I can turn
> the unit on and operate or just let it sit for perhaps an hour or so
> depending, and then the trouble starts, infinite SWR on an antenna and a
> dummy load...
>
> Thanks for any suggestions.
>
> The unit is in a bookcase sort of enclosure with about 2.5 inches all
> around
> it, no other source of heat, and open front and back. It has the installed
> TenTec accessort fan on the heat sink.
>
> I am now trying letting it run with a small fan in back for a coule of
> hours
> and going to try it again.
>
> Thanks for any ideas,
>
> Mike
>
>
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