DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws;
  s=s1024; d=btinternet.com;
  h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding;
  b=qcK26uQ0yui0tiqNZFuSmf7f7GEecVPOasmEqLqkkfAtbbluDwjr6Fh1XQ/6P03iRQrdflW+emkU/5vNqEcpXt0W3dkNDt1EIuYQQekzF8I8+xgRWWH8iohvYe6y29/S4oT2PRkM3iahBp7kbPobr+MRAzG76tu8/LpgTrLVvXA=;
Message-ID: <293775.46128.qm@web86503.mail.ird.yahoo.com>
Date: Sun, 10 Jan 2010 23:21:04 +0000 (GMT)
From: ALAN MELIA <alan.melia@btinternet.com>
To: rsgb_lf_group@blacksheep.org
In-Reply-To: <BF141F25F4AA49B983D2EEBBD9C0DD83@AGB>
MIME-Version: 1.0
DomainKey-Status: good (testing) 
Subject: Re: LF: GPO/BT Wire  No '10' any use for  long wire Ae ?
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org


Hi Graham I believe this is known as "drop-wire" ( I was not actually in=
 the Telphones area) If so it is a mixture of steel and copper strands, an=
d will stand a far longer span that pure copper or even the special alloys=
 used for rigging professionally. I would say as a top wire it would be fi=
ne but use some copper for the vertical section of an L or T where there=
 is significantly more current flowing than in the top-load. Loss in the=
 top load doesnt matter too much as this is not really radiating anything=
 usefully on LF, but is a vital capacitance to ground. Another way of thin=
king of it is that by the time the current reaches the top it has already=
 traversed the Radiation-resistance. (only true for very short aerials!)

Alan G3NYK

--- On Sun, 10/1/10, Graham <g8fzk@g8fzk.fsnet.co.uk> wrote:

> From: Graham <g8fzk@g8fzk.fsnet.co.uk>
> Subject: LF: GPO/BT Wire  No '10' any use for  long wire Ae ?
> To: rsgb_lf_group@blacksheep.org
> Date: Sunday, 10 January, 2010, 22:47
>=20
>=20
> =20
> =20
>=20
>=20
> =20
> GPO/BT Wire  No
> '10' any use for  long=20
> wire Ae ?
> =20
> Looks like the  wire
> is used from pole=20
> to  house , has supporting wire and thinner conductors
> in a pvc sheath=20
>=20
> =20
> anyone any idea
> about  its suitability for=20
> a  long  wire  Ae ?
> =20
> tnx - G ..
>=20
>=20
> =20
>=20