[Elecraft] Antenna Theory

[Vic Rosenthal]

George, W5YR wrote:

> Re 4):
> 
> Or quite simple if the balanced line is connected to the coax which has, in
> my case, five ferrite #43 beads on it, each 1.125" in length. 

I was assuming that the open-wire line was being operated at high swr, 
causing the balun to see widely varying impedances on different bands. 
   This would make any balun problematic.

> I have a slight case of heartburn over 2), as well. A feedline may have a
> large SWR and as long as the impedance presented at the feedline input is
> within the efficient range of the tuner, its loss will be small to
> negligible.

The 'losses' I referred to were the line losses, not tuner losses.  I 
was comparing a system using coax with one using open-wire line.  I 
assumed that if you are using a tuner, the line must not be flat 
(otherwise, why use a tuner).  Line losses, then will be acceptable with 
the coax system as long as the SWR is moderate.  The open wire line will 
have lower line loss even with high SWR (up to a point, of course).

-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco