[TowerTalk] Auto antenna tuner

Jim Lux jimlux at earthlink.net
Sun Mar 28 07:00:35 EST 2004

There aren't a huge number of autotuners that can handle the high power
(most are aimed at the 200W and under market)..
I like my LDG tuners.  Others have had good luck with the SGC line.

Things to think about (for any tuner).. not necessarily that these are
important for you, but something you should think about.

Can you remote it to the antenna?  You're much better off with the tuner at
the load, so the amp drives 50 ohm coax into a 50 ohm load.

Do you need a balanced output?  Think about chokes and baluns.

Does it have some way to store presets?  If you have to go through a whole
tuning cycle everytime, it's pretty annoying.  Do the presets store manual
"touch up" you do after the auto tune cycle?  (My older LDG (without
presets) doesn't always find a match on 75m, into a dipole hanging 5 feet
off the ground, so I have to bump it in manually)  If you are manually
tuning, do you have forward and reflected power to look at while doing the

Does it need to be portable?

----- Original Message -----
From: "Noel" <y.yaesurigs at verizon.net>
To: <towertalk at contesting.com>
Sent: Saturday, March 27, 2004 7:33 PM
Subject: [TowerTalk] Auto antenna tuner

> I know this isn't exactly tower related but I'm considering an auto
> antenna tuner as an addition to my shack.  I'm sure some of you out
> there have some experince with auto tuners and could make some
> recommendations as to what make or models to consider.  My requirements
> are simple but don't seem to be easy to find. I want an auto tuner that
> can handle more than a couple hundred watts, that I won't have to take
> out of line when I want to use my amp (600 watts).  I'm currently using
> an MFJ 989C legal limit roller inductor tuner but want to be able to
> change bands more quickly.  I'm obviously willing to settle for less
> than legal limit but want the funtionality of a roller inductor tuner
> but without the manual tunning.
> All responses appreciated.
> Noel
> _______________________________________________
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Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any
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