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:[email protected]] Sent: Saturday, February 21, 2015 8:26 PM To: [email protected] 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 <[email protected]> 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. _________________ Topband Reflector Archives - http://www.contesting.com/_topband
