[Elecraft] Balanced AT

[N2EY at aol.com]

In a message dated 9/10/07 1:10:42 PM Eastern Daylight Time, 
d.cutter at ntlworld.com writes:


> If I had a doublet I would seriously consider feeding it like the W5DXP 
> which uses switched ladder line for matching .  Looks cheap, low loss and easy 
> to do: any residual mismatch should be compensated by the K2/K3 auto-matching 
> system.
> 

Cecil's "linear tuner" setup works - I've heard it on the air. He's used it 
for a number of years. 

The problem is that it's a bit of a mechanical nightmare, with all the 
switches and different lengths of window line.  Remember that the window line has to 
be separated from other conductors by a couple of line-spacings. 

You also don't have a lot of flexibility on how much line there is from the 
antenna to the first switch. 

If you don't QSY a lot, it's certainly doable.

73 de Jim, N2EY


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