In a message dated 9/29/2004 4:34:20 PM Eastern Daylight Time,
towertalk-request@contesting.com writes:
Could anyone help me with the measurements of the Hairpin match used on
the Telrex TB5EM. I purchased a used one and the hairpin match is
missing. I do have the blueprint drawings of the antenna, and know the
shape, but I do not know the dimensions. It is about a number 10 or 8
gauge aluminum wire bent in the shape of a "U" and appears to be the
width of the attachment points on the driven elements. I can trial and
error the length, but I hope to get some dimension here. I used to
have Telrex TB6EM 32 years ago and loved it.
===============
I think you are correct on the gauge of the wire (stainless steel) at about
#10 guage. The length of the loop should be determined by the hole in the boom
where the end of the loop was fastened down with a sheet metal screw. The
width is a little less then the attach points bend the wire toward the boom
about 1" (on each side) starting about 3 to 4 inches from the connection
points.
The "Backend" at the boom attachment point has a uniform semicircular shape.
Regards,
Norman W4QN
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