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Date: Fri, 07 Sep 2007 20:23:18 +1200
To: rsgb_lf_group@blacksheep.org
From: Brenda Hayes <bjhayes@xtra.co.nz>
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Subject: Re: LF: BOG - Beverage on the Ground
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At 01:28 a.m. 7/09/2007, you wrote:
>Hi LF gang,
>
>In my sked last night with Finbar (best conditions for some weeks) we
>discussed mini-beverage antennas laid directly on the ground. I've done
>a Google trawl and there's a bit evidence that they work well.
>
>I have a need to keep things low-profile due to all the adjacent fields
>being used for sheep, so running a long (100-200m) wire on the ground is
>attractive. I could even run it outside the fenceline along the verge
>beside the road - I'm in a very rural area.
>
>Does anyone have any experience of using BOGs on 500kHz?
>
>John
>Gm4SLV

Hello John and the LF Group,

A few years ago, Robert, VK7ZAL made regular expeditions to a remote 
site near Hobart in Tasmania and listened for our ZL gang who were 
transmitting on 181.4 kHz. He ran out a couple of hundred metres or 
so of insulated wire, over the ground and bushes, pointed towards ZL, 
and connected to an antenna tuner that fed his receiver. I should 
also add that the far end was unterminated. Allowing for the 
wavelength, this short "Beverage" worked very well.
I have copies of recordings made by Robert and was surprised by the 
very good reception at his end [audible CW].

At John's "remote" site I believe that a 200m BOG would be well worth 
a try on 500kHz.

Perhaps I should add that we have not yet achieved any access to the 
500 kHz zone in ZL land. However, we have open access, all modes, all 
the way, from 130 through to 190 Khz. The other good news is that the 
"power line carriers", radiated from high-voltage power lines, have 
nearly all gone. In the past, they made some parts of the LF spectrum 
quite unusable. We just need a few more LF participants.

73,

Kevin, ZL4MD