Very interesting, reading as always,
This brings me to another question, how do I need to handle grounds in a switch
box with 3 antennas ?
73
Luc
ON4IA
--------------------------------------------
On Tue, 3/22/16, Bill Tippett <btippett@alum.mit.edu> wrote:
Subject: Re: Topband: 1 center point to ground all 8 beverages??
To: "topband" <topband@contesting.com>
Date: Tuesday, March 22, 2016, 10:19 AM
W3LPL:
>Another solution is to use
relays to connect only the selected Beverage to the ground
rod
and disconnect the other seven.
I've done this for 31 years from 3 different locations with
no problems.
From a 2011 post on this subject:
ZL3IX wrote:
>* As long as your relays have decent isolation, even for
high impedances,*
it may even be better to switch the Bev wires
themselves. That way you
don't share the ground at the feed end, and avoid any common
impedance
coupling.
I agree. I've
done this since installing my first set of 7
Beverages in 1985 arranged like wheel spokes and have never
noticed
crosstalk problems. I even sometimes switched two in
parallel to
listen in two directions simultaneously in contests (NE and
W when I was
in Colorado). Now I prefer diversity (Beverages on one
RX and an RX 4SQ
on the other RX) for contests.
73, Bill
W4ZV
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