Re: Using an Unbalanced Tuner with a Balanced Feedline

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From: Charles Kadesch (chas@nmaa.org)
Date: Thu Mar 27 1997 - 14:21:51 EST


Jim Dolson wrote:
>
> I use balanced feedlines exclusively with balanced tuners. Is it possible
> to use an unbalanced tuner (LDG "group buy" QRP tuner) with a balanced
> feedline?

Jim:
A good way to use an unbalanced tuner with a balanced feed line
is to use a balun on the tuner input and "float" the RF ground
of the tuner. Unfortunately, I think the latter would likely be
a problem with the LDG AT-11 (and probably the QRP version as
well) since the ground for the electronics seems to be inter-
mingled with the RF ground. It probably could be done with some
careful trace cutting and jumpering but it doesn't look like a
trivial project.
-72-
Chas W3KC


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