"carl wesser" wrote in message
...
the boom is about 14 feet, I'm going back and get all sizes..
of the 4 elements ,,2 appear to be identical, although I can only see
where
3 elements were attached to boom, the owner said" all 4 "were on boom when
he took it apart
thanks
Carl
===================

Tam has a good point, since the Hy-Gain TH3 has a 14 foot boom, you can
start with its manual (adobe acrobat)
http://www.hy-gain.com/man/pdf/TH-3MK4.pdf

Hy-gain now calls the "hairpin match" a beta match (the match does make a
"fourth" connection to the boom) - this match has changed a bit from early
models. Also remember that the TH3 does not have a supplied balun.
Again, pay close attention to the type of brackets, swaging, etc. in the
manual versus your parts This should identify it as a HyGain antenna

w9gb