"Tim Wescott" wrote in message
...
Reg Edwards wrote:

Why use a balanced tuner when a less expensive, easier to operate,
unbalanced tuner, in conjunction with a simple choke-balun, will
do
just as well?

Insert the 2-wire choke-balun between the unbalanced tuner and the
balanced transmission line.
----
Reg.


Because a balun particularly lossy at high SWR -- with a balanced
tuner
followed by a balun you present the balun with the correct
impedance, so
it's at its best.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

========================================
Tim!

I don't know what design services you offer but you are WRONG.

You must have been reading the wrong comical magazines.

A choke balun is amongst the most power-efficient devices.

It consists only of a pair of wires wound around a ferrite ring. It is
just a very short transmission line of the same length as the wire and
has the same very low loss.

It has a phase shift of the same length of line. Which is immaterial
insofar as the tuner is concerned. It merely changes the tuner L and
C settings.
----
Reg.