Hi Frank,
The problem with a common ground for multiple Beverages is that
it isn't really "ground" at all. Inevitably it has significant resistance,
The signals received by your eight Beverages will cause significant
current flows through perhaps fifty ohms of RF resistance in your
"ground" rod. The voltage that results from the current flows from
eight connected Beverages will appear as unwanted signals on your
selected Beverage, significantly degrading its directivity.
One solution to this problem is to use eight ground rods spaced
at least 3 or 4 meters from each other. Another solution is to use
relays to connect only the selected Beverage to to the ground rod
and disconnect the other seven.
73
Frank
W3LPL
----- Original Message -----
From: "dl8yhrfrank--- via Topband" <topband@contesting.com>
To: Topband@contesting.com
Sent: Friday, March 18, 2016 7:16:21 PM
Subject: Topband: 1 center point to ground all 8 beverages??
Hi all..
160m season over soon... so think about new setup off beverages..found
out a new center feedpoint place where i can connect all 8 beverages
with just a few meters coax to a antennaswitch..annyone knows if its
possibile to connect all balun ground connections just to one center
ground point off a cuppertupe some 2.5m in the ground?
Ore does each Beverage need his own ground?
Anny info vy welcome..
vy 73
Frank
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