Topband: Modeling a BOG

[K1FZ-Bruce]

A few years ago when I started playing around with BOG antennas, I 
buried a 160 foot length  existing BOG  2 to 6 inches.  I lost more 
than 6 DB on 160 meters. On 80 meters signals went WAY down. 
I did not go further with exact measurements.    Lower frequencies 
have deeper, less attenuated, earth penetration. 

73
Bruce=K1FZ
www.qsl.net/k1fz/beveragenotes.html

On Sun, 22 Feb 2015 08:19:56 -0500, Tom W8JI <w8ji at w8ji.com> wrote:
I highly doubt any NEC based model predicts an accurate pattern for wires
> buried in dirt, in ground contact, or very near normal earth. 
>
> It would mostly be a case of GI =GO. 
>
> 73 Tom
>
>
>
> ----- Original Message ----- From: "James Wolf" <jbwolf at comcast.net>
> To: "'Mike Waters'" <mikewate at gmail.com>
> Cc: "'topband'" <topband at contesting.com>
> Sent: Saturday, February 21, 2015 8:50 PM
> Subject: Re: Topband: Modeling a BOG
>
>
> > Mike,
> >
> >
> >
> > The reason the beverage wire in the model is 2 ft. below the 
> surface is to > have it away from the ground somewhat and have a nice 
> segment length from > the wire to ground on each end. The model shows 
> only about 2 dB > difference in gain and no pattern difference 
> between the wire 1” below > ground and 2ft., which I suspect could 
> be correct for 160 meter > frequencies. Of course, the pattern is the 
> problem. 
> >
> >
> >
> > In practice, I would lay it on the ground and after a few years, it 
> would > be just below the surface. 
> >
> >
> >
> > Hmmm. BBG – Beverage Below Ground. 
> >
> >
> >
> > Jim – KR9U
> >
> >
> >
> > From: Mike Waters [mailto:mikewate at gmail.com]
> > Sent: Saturday, February 21, 2015 8:26 PM
> > To: jbwolf at comcast.net
> > Cc: topband
> > Subject: Re: Topband: Modeling a BOG
> >
> >
> >
> > I have never heard of anyone burying a BOG. The radials could be 
> buried an > inch or so, but a BOG should lay on the ground or 
> slightly above. 2 ft. is > two feet too deep. 
> >
> > About 200' is a common length for a BOG on 160. 
> >
> > 73, Mike
> >
> > www.w0btu.com
> >
> >
> >
> > On Sat, Feb 21, 2015 at 6:51 PM, James Wolf <jbwolf at comcast.net> wrote:
> >
> > I am trying to model a BOG (Beverage On or in the Ground). ... As 
> soon as > I drop the antenna below ground level, approx. 2 ft. 
> without errors, I > lose all indication of directivity except for a 
> few dB. I have tried > different lengths from 200 ft. to 800 ft. 
> >
> >
> >
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