Topband: Reversible BOG?

[Carl]

----- Original Message ----- 
From: "Jim Miller" <jim at jtmiller.com>
To: <topband at contesting.com>
Sent: Saturday, January 12, 2013 12:17 AM
Subject: Re: Topband: Reversible BOG?


> As a follow up I wonder if rather than using windowline, whose 
> transmission
> line performance would be subject to variations in weather, it might be
> better to use coax. The outside of the shield would always be the antenna
> but the interior acting as the transmission line would not be subject to
> weather variations.
>
> Coax reversible BOG?
>
> 73
>
> jim ab3cv

If you can, then raise the BOG a bit off the ground on low growth. I run 
mine 2-4" off the ground and thru the woods using military telephone line 
and the changing ground conditions dont appear to bother it much; 
directivity remains pronounced even when snow covered. Having poor ground 
conductivity to start with seems to help and the 2-3 ground rods (4' driven 
at angles here) plus 25-30' radials at both ends tends to stabilize things 
good enough anyway.

Carl
KM1H