in answer to tam/ WB2TT
 

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
fffffffffffffffffffffffffff

"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
fffffffffffffffffffffffffff

Carl -

Actually, the antenna mounting hardware (boom to mast) and elements to boom
are usually give-aways -- as to who made the antenna. Another area to
carefully visually inspect is the matching system between coax / balun and
driven element.

Greg
w9gb

"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
fffffffffffffffffffffffffff

OK, that would rule out the CushCraft A4, because it is on an 18 foot boom.
I found out that the TH4 uses 3 elements on 15/20, and 4 elements on 10. So,
one of the elements would not have a trap. But, the TH3 is on a 14 foot
boom, which seems to make it unlikely that the TH4 is also.

I wonder if the guy you got it from knows what he is talking about. If it
looks like there were only 3 elements, that could well be the case. I
recommend going to www.hy-gain.com and downloading the TH3 manual, to see if
what you got is similar. Also, that might explain the rods parallel to the
boom that you mentioned. I have the TH3 Mk4, and what you described earlier
sounds like the hairpin match.

Tam/WB2TT

"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