A reversible BOG does not work well because of the very lossy
conductors laying on the ground. It can be done but you need to run a
separate feedline to the opposite end and switch the feed circuitry in
and out. When you model it you won't get at all what you get on an
elevated beverage.
The endearing characteristics of a single two hundred foot -ish BOG
are 1) it seems fairly immune to neighborhood vertically polarized
noise, and 2) front to back. To check that simply see if W5 signals
drop down "a lot" on a NE BOG, etc.
A BOG is quite lossy, not a gain antenna at all and almost always
requires an amp, best placed right at the BOG to create maximum signal
to noise distance from crap (usually from the house) on the feedline
shield.
A BOG is really not a beverage. It's one member of a class of ground
low velocity factor RX antennas that is suggested by a beverage.
Getting an optimal pattern from a BOG does not follow beverage rules.
73, Guy.
On Mon, Dec 5, 2011 at 1:22 PM, ZR <zr@jeremy.mv.com> wrote:
> Put down another in the opposite direction. If you did a 2 wire reversible
> in the beginning it would have been easier.
>
> Carl
> KM1H
>
>
> ----- Original Message -----
> From: "Pete Smith" <n4zr@contesting.com>
> To: <Topband@contesting.com>
> Sent: Monday, December 05, 2011 8:10 AM
> Subject: Topband: Evaluating RX antennas
>
>
>>I just laid down a BOG and would like to evaluate its directivity. In
>> the absence of a calibrated signal source for real pattern measurements,
>> how do you go about this?
>>
>> --
>> 73, Pete N4ZR
>>
>> The World Contest Station Database, updated daily at
>> www.conteststations.com
>> The Reverse Beacon Network at http://reversebeacon.net, blog at
>> reversebeacon.blogspot.com,
>> spots at telnet.reversebeacon.net, port 7000 AND now
>> at arcluster.reversebeacon.net port 7000
>>
>>
>> _______________________________________________
>> UR RST IS ... ... ..9 QSB QSB - hw? BK
>>
>>
>> -----
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>
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
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