http://www.dxengineering.com/Parts.asp?ID=3585&PLID=50&SecID=10&DeptID=9&PartNo=DXE%2DBAL450%2DH10%2DB%2DP
Has anybody uses these items or similar ?? The concept is a 1:9 balun at each
end of a 300-1000' run
of 450 ohm line... then 50 ohm coax up a tower... that happens to be 300-1000'
away.
I thought of this same idea back in the 80's, but was always on a small city
lot, so discarded it. [still am]
I suggested the concept to other folks who were on acreage, and nobody tried
it...or even tested the concept.
DX eng claims .2 db loss for EACH of the 1:9 baluns [ but no freq is spec'd
] From their chart, it appears
to be aprx 15m band ? You also have the loss of the actual 450 ohm line
itself.
Heck, if you did it right, you could even run the 450 ohm line up the side of a
tall tower, using
some creative stand off's of course. They used standoffs back in the early
60's, to stand off 300
ohm line going up the side of a AL mast on a typ roof-top for TV ants.
later.......... Jim VE7RF
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