Topband: BOG near salt water

[Milt]

Val,

Beverages of any type will NOT work over salt water or earth where the 
chemical makeup of the earth produces a highly conductive material.

Here is the way I understand the theory.

The Beverage works on the principle of a two wire transmission line where 
one side of the transmission line is your Beverage wire and the other side 
is the earth.

The wire half has RF voltage induced in it by 'tilting' of the wave due to 
the difference in the velocity factor of the 2 halves of the 'transmission 
line'.  The signal travels faster in the wire than it does in the earth, 
producing the miniscule amount of RF voltage in the wire, which is impedance 
matched to your coaxial cable.

If the medium which comprises the other half of your Beverage system has a 
VF at or nearly so the same as your wire half, no RF voltage is produces and 
you will NOT have any signal.

Congratulations on your success.  It means the earth comprising the other 
half of your BOG is not salt saturated.  You are getting signal tilt 
producing an RF voltage, and therefore signals.

If you were to move the BOG over the salt water and have your grounds at 
each end connected to the salt you will find that there will be for all 
intents and purposes ZERO signal produced.  It is then truly just a balanced 
open wire feed line and nothing else.

Keep up the good work.  Always try and prove things for your self.  That is 
what it is all about.

73, and good luck, de Milt, N5IA


-----Original Message----- 
From: Hugh Valentine
Sent: Tuesday, January 05, 2016 9:15 PM
To: TopBand
Subject: Topband: BOG near salt water

Some say a BOG is not effective at/over salt water.

For grins I installed a 200’ BOG to Europe.  4:1 Binocular XFMR,  #18 single 
wire, (92 Ohm Termination= 1.1:1 SWR on RG6 cable) 4’ Ground Rods, No 
radials.
Works about same as K9AY.  Maybe 8DB down in sig strength.
Installed approximately from 1’ to a maximum of 30’ from salt water.

I would say it works and can be installed rapidly.

Val
N4RJ
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