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Old July 23rd 11, 01:32 AM posted to rec.radio.amateur.antenna
Sal[_3_] Sal[_3_] is offline
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First recorded activity by RadioBanter: Jul 2011
Posts: 117
Default Cut length on antenna made from coax cable


"Owen Duffy" wrote in message
...

The failure of the sleeve to effectively decouple the dipole is the
reason why several antennas don't work as thought. King gives some hints
that the relative diameters of the conductors bears on operation.

Owen


I made a sleeve dipole cut for 375 MHz for listening to the Blue Angels in
flight at NAS Miramar, c. 1992. It worked, but, heck, we could see them
most of the time. I was in Coat Hanger Territory. By the way, the Blue
Angles say very little in flight. :-(

This thread got me thinking. If three or four tuned radials were added,
would this be a better approach? Yes, I realize it gets toward a lot of the
standard commercial monopole antennas, with their 45-degree-down radials. I
mention this because such radials could be added and still keep the builder
in comfy Coat Hanger Territory -- that is, a very light, casual,
cobbled-together antenna -- but something that works a bit better and helps
the decoupling.

Frankly, I understand what it is to buy something and what it is to build
something; I'd rather build. It keeps me off the street. :-)

"Sal"
(Kd6VKW)