[Antennas] spencer dipole from Mccoy's book

[Gary Lee]

I am considering this antenna for several reasons, not the least of which
is shielded balanced feedline.  If I understand Lou Mccoy's description
correctly, this is a dipole 139 ft long, fed at the 82 ft point with the
center conductors of two pieces of rg-11 72-ohm coax.  Grounds are tied
together at the tuner, and left open at the antenna feedpoint.

I am totally blind, so got the book on tape, unfortunately with not much
description of pictures.  

Am I correct?

Also, anyone out there with experience with this setup?

Thanks for any help.