On Sun, Feb 1, 2009 at 10:40 AM, Richard Thorne <rmthorne@suddenlink.net>wrote:
> I have a vertical in my backyard that I currently feed at the base with
> an SG-239 200 watt tuner. I want to increase my power from 100 watts to
> 400 watts. In order to accomplish this I either need a tuner at the
> base like an SG-235 or CG-5000 both expensive.
A couple of other options:
Fixed tuned matching networks:
http://www.n3ox.net/projects/lowbandvert
or motorize your tuner
http://www.n3ox.net/projects/servo
There are more elegant ways to do that, stepper motors, etc.
You could also do a mix of approaches.... bands where the coax loss isn't
too bad, you use a shack tuner, bands where it is unacceptable to you, use
an external matching network. VK1OD's page could give you a guide to which
bands are worst, and you could start there.
73
Dan
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