[Elecraft] Elecraft balun

[Indy]

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.

73

Fred - kt5x
K2 # 700