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Old June 20th 10, 05:39 PM posted to rec.radio.amateur.antenna
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Posts: 115
Default Direct connect 6 meter beam

John Ferrell wrote:
When I assembled it I was disappointed to find it did not have a gamma
match! Instead it got by with a direct connection to the driven
element with the 50 ohm line.


Cushcraft prided themselves on building antennas with a DC resistance of
0 ohms.

In plain English they were static disipators. At their design frequency
they had an impedance of 50 ohms.

When I lived in Philly, we had a sever lightening problem. Whenever there
were lightening storms there were nearby strikes with all sorts of expensive
EMP problems.

When I put up a cushcraft 2m beam (the 11 element vertical polarization on
the same beam as an 11 element horizontal one) with proper gounding they
all "went away". I wonder if our neighbors suddenly noticed next spring that
the lightening had come back :-)

Geoff.

--
Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM
I do multitasking. If that bothers you, file a complaint and I will start
ignoring it immediately.


 
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