[Elecraft] K2 KAT100 and BL2 questions

[Vic K2VCO]

Brian Lloyd wrote:
> 

> 1. What is the matching range of the KAT100, i.e. will it match an 
> antenna fed at a voltage node 
> 
> 2. Does the BL2 have a problem when looking at a really high impedance, 
> i.e. when center feeding a full-wave doublet?

Maybe I'm missing something, but the answer depends on the length of the 
feedline. If your feedline happens to be an odd multiple of 1/4 wl, then 
what the KAT100 and the BL2 will be dealing with will be a very low 
impedance, not a high one. A half-wave feedline will repeat the 
impedance at the feedpoint. And in-between lengths will give in-between 
values.

The balun will operate efficiently as long as the impedance is primarily 
resistive and in a range of a few tens to a few hundred ohms. Reactance 
is bad for balun efficiency.
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco