Obviously, many radios have internal autotuners, too.  I am not a fan of
in-shack autotuners, personally.

I have experimented with several SGC autotuners over the years.  They
are all different.  I have one that will tune a 23' vertical on 160m, but only
handles relatively low power (fine for QRP).
<http://www.qsl.net/k7on/30mVertical/index2.htm>

I have another that will handle 500w (not so QRP), but requires a very
long radiator for 160m (like 250').
<http://www.qsl.net/k7on/EFLW/index3.htm>

Both require 12v and a coaxial cable connection.  The VSWR on the
coax is close to 1:1 so loss is there is fairly low.  For flexibility and the
coverage of many bands, I find them hard to beat (like 160-6m with a
single 23' radiator).  Obviously, performance varies and a 250' wire
works quite well on some lower bands. :)

On Nov 24, 2015, at 2:34 AM, Alan Larson wrote:
>  For the folks here who have used them, what do you think of autotuners in
> general,
> and these brands/models specifically?  Good idea, or not really effective?

--
http://www.qsl.net/k7on/
NAQCC #0470 FP #2990

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