Cecil Moore wrote:
Reg Edwards wrote:
So we need something different from and more sophisticated than the
conventional automatic tuner with its relatively simple magnitude and
phase-searching abilities.

I'll believe it when I see one which works.

Reg, I just opened up my 2006 MFJ catalog. They have
an "Automatic LoopTuner(TM)", the 300w MFJ-937. It's
designed for approximately 1/10WL loops.
--
73, Cecil, http://www.qsl.net/w5dxp
Hi Cecil, Looking at the MFJ site and trying to reverse engineer the
loop tuners they sell...They monitor the loop current to get resonance,
tune for maximum. Then they have an "L" network to match 50 ohms.
They have a Butterfly style Cap. for HV., and monitor the current as it
is adjusted. Have a 50 ohm cross needle swr bridge to detect a 50 ohm
match, for their matching control. I assume their "auto loop tuner"
looks at the same stuff.
Gary N4AST