Message-ID: <003e01bed236$023a6180$0600a8c0@prstesv1.prestel.co.uk>
From: "Dave" <dave@picks.force9.co.uk>
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: Horizontal polarisation on LF?
Date: Mon, 19 Jul 1999 23:28:18 +0100
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Dear all,

The important thing about any LF antenna is to ensure that the wire is
supported by good insulators, nothing kills the Q of a system like a wire
touching a damp tree or similar lossy structure.
I am sure a low wire will work, I have had good QSOs on 160 with my kite
wire lying on the ground after the wind dropped, average height about half a
metre!
Please try it Rik!

73, Dave G3YXM

>
>The long wire straddles a deep gully, but the wire has considerable
>sag.  The wire is a thinner type of power line wire, as it needs to
>survive strong wind conditions.  Conventional wooden pole supports are
>used, and height above ground is only 4 or 5 metres in places, but
>obviously the route is strategically placed to get a good span of the
>main gully.  I have visited the farm site, but it is difficult to
>describe the situation in a brief message.  Thus the sagging wire, over
>an irregular terrain gully, is fairly difficult to model with software.
>But whether or not it is adequately modelled, ZL1WB has done very well
>with log book entries and QSL cards.
>
>I think it is worth trying long wires in practice for LF transmitting,
>and whether it breaks records for dummy loads or DX will soon be
>apparent.  Not many amateur sites have room for a very long wire.  In
>this respect, the ZL1WB long wire has a remote controlled transmitter,
>as the "selected site" is a few kilometres from his QTH, at a farm
>building with mains power.
>
>Regards,
>
>Bob ZL2CA
>
>
>