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Message-ID: <003501c85d1b$0eb25ed0$2101a8c0@PCRoelof>
From: "Roelof Bakker" <roelof@ndb.demon.nl>
To: <rsgb_lf_group@blacksheep.org>
References: <000501c85c3d$4fa2f820$0b01a8c0@weazle> <20080122135712.5D7C8F3862@smtps02.kuleuven.be> <4795FB87.1060805@yahoo.com> <001a01c85d11$71691b40$0900a8c0@Lark>
Date: Tue, 22 Jan 2008 17:20:11 -0000
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Subject: Re: LF: Fenceline longwire
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Hello all,

In practice even a short in regards of wavelength wire on the ground shows 
good directivity. A 100 m long untermintated wire on the ground is already 
an excellent antenna from 250 kHz and up. This antenna is unidirectional.

I have been testing some real barbed wire fences of 1500 metre long, which 
showed a very narrow beamwidth in one direction.

If you have the opportunity, there are many usuable fences out there which 
can be put to good use as a reception antenna. You might be in for a nice 
surprise.

As these antenna don't work as normal antennas, the modelling programs won't 
work at all. Study of the beverage type of antenna will make this clear.

Best regards,
Roelof Bakker, pa0rdt


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