[Elecraft] Balun

Vic Rosenthal vic at rakefet.com
Thu Jun 9 18:21:57 EDT 2005


Stuart Rohre wrote:
> I guess one of the issues, are you ordering a K2 with its auto tuner?
> 
> In that case, my suggestions apply, to adding the Elecraft balun, and using
> the internal K2 tuner for your antenna.  It is also true that a balanced
> line tuner will work after the K2, and before your ladder line.

A K2 with auto tuner followed by a balun will work well on some bands, 
and poorly on others.  The balun's effectiveness and efficiency will 
depend on the 'common mode impedance' it sees on various bands.  This 
depends on the length of the antenna and feedline.  There will most 
likely be combinations of frequency and dimensions in which the balun 
will heat up and waste power, as well as combinations in which it will 
not do its job, and power will be lost by radiation from the feedline 
(with associate noise pickup and possible RFI).

Again, almost anything will 'work'.  The question is, How Well?

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


More information about the Elecraft mailing list