"Tarmo Tammaru" wrote in message
...
Steve,

25 mm is rather skinny to go 8.3 meters with. However, the following
should
work. I assume the tubing is available in 3 meter lengths. 10 foot lengths
would be even better.

Get four 3 meter pieces, and cut one down to 2.3 meters. Now bolt and
center
this 2.3 meter piece to the side of one 3 meter pieces. The 2.3 meter
piece
will be the top of your antenna, the 3 meter piece the bottom. Now bolt
the
remaining 3 meter pieces to the bottom piece, and you should have an 8.3
meter boom. Whatever you do, do not use brass or copper hardware. You
might
want add a strap to the top side where each of the 3 meter pieces butts up
to the 2.3 meter piece.

Tam/WB2TT

Thanks Tam,

the tubing comes in 5m lengths - so I could cut one down to 3.3m and place
it end-to-end with the remaining 5m tube. Then use the 1.7m offcut bolted to
the underside of the 5m and 3.3m tubes. I could go to 30mm tube if needed.
All I need now is the plans for the antenna but I should have those soon. I
have some 25mm wide earthing strap I could use between the sections.

Steve
G1FQD