[Elecraft] Elecraft balun

[Vic K2VCO]

Indy wrote:
> I want to use my Elecraft BL-1 1:1 balun on field day.
> 
> The balun would serve as center insulator, but the coax line plugged
> into it is a phasing line.
> 
> Here is my question:  Will the windings on the balun, introduced
> between the antenna and the phasing line, effectively increase the
> length of the phasing line?
> 
> I think it will, and I am wondering by how much to shorten my phasing
> line to account for it.  I think the windings are six to seven inches
> in length and would imagine the velocity factor to be high.

You said it's a phasing line, so I presume you have a multi-element 
antenna.  In this case, just use a similar balun in the same place on 
all the elements.  That will preserve the phase relationship.

If it's just one element, maybe you meant that the additional coax is a 
matching section.  In that case, you can use a 1:1 balun without 
changing anything -- the impedance transformation required will be the same.
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco