Hi Ron,
A short Beverage -- regardless of its velocity factor -- has the radiation
pattern of a short Beverage. You can't improve the performance
of a Beverage antenna by lowering its velocity factor. That's why
BOGs have a radiation pattern similar to an elevated Beverage of
the same length, except that a BOG has more loss than an elevated
Beverage especially for signals arriving at low angles.
A BOG is an excellent choice when stealth is the driving requirement,
otherwise arrays of short verticals provide significantly superior
performance compared to BOG or short Beverage occupying the same
physical space.
73
Frank
W3LPL
----- Original Message -----
From: "Ron Spencer" <ron.e.spencer@gmail.com>
To: "Topband@Contesting. Com" <Topband@contesting.com>
Sent: Monday, August 6, 2018 4:49:36 PM
Subject: Topband: making a bev seem longer
Taking the chance to show my ignorance :)
Here is my thinking. While adding cores along the length of a beverage may
make it appear electrically longer, how can that help its performance?
I'd think that the true mechanical length is what matters. Each inch/ foot/
meter of the wire is what "gathers" the signal. A 300' (actual length) will
gather more signal than a 200' beverage. Making it look electrically longer
won't change this will it?
Same as a 100' tall tower will be a better transmitting antenna than a 43'
one.
Good DX
Ron
N4XD
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