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From: "Graham" <g8fzk@g8fzk.fsnet.co.uk>
To: <rsgb_lf_group@blacksheep.org>
References: <6DEA7E8987244A48846E44813972D608@TonyLaptop>
In-Reply-To: <6DEA7E8987244A48846E44813972D608@TonyLaptop>
Date: Thu, 24 Jun 2010 17:47:30 +0100
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Subject: Re: LF: Antenna wire
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Tony,

Depends on the  un supported span , I think RG58   was used by  DL sta=
tions a while ago  as  80 mtr dipoles, I use the  old 7  strand condui=
t  (35 amp ?) at home and the  600  ft  delta  loop at gb4fpr  also =
 uses this with  200 ft  sides, some  sag has  occurred, but the  wire=
 is  still  in place  , I'm not  sure if the  pvc coating or the  loca=
tion by sea , may be  both, causes quite a  build up of  static  on th=
e  Ae=20

when  we replaced the  long wire, I used  the  telephone  drop-wire =
 , 4 conductors  and 3 steel  support cables in a pvc outer , the  pre=
vious ae used conduit cable.

I didn't foresee any  problems  in using the  phone  cable , the  span=
 is 750 feet , took a little  tug to  get it  tight  , but  there  is=
 very  little  sag  and the  electrical performance is quite impressiv=
e , Andy's G4JNT cw beacon  reads  3/4 scale on the  JRC rx S-Meter an=
d the  Q on hf looks to be  good , although to  be fair  the  wire is=
 90  foot above the  sea/beach , not  proportionally  high, but  clear=
 of  objects=20

Though  I would  from  my own  experience, suggest that addressing the=
 feed and current distribution in a  vertical  antenna , be it  quite=
 short, may give unexpected performance on 500.=20

G ..=20




From: Tony Baldwin=20
Sent: Thursday, June 24, 2010 4:10 PM
To: rsgb_lf_group@blacksheep.org=20
Subject: LF: Antenna wire


Sorry to ask a stupid newbie question but what is the best wire for my=
 aerial ?
I had thought about getting a couple of 100m rolls of cheapo RG58 and=
 soldering the centre and screen together, or is there a better way ?
Tony, EI8JK

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3Dtext/html;charset=3Diso-8859-1 http-equiv=3DContent-Ty=
pe>
<META name=3DGENERATOR content=3D"MSHTML 8.00.6001.18928">
<STYLE></STYLE>
</HEAD>
<BODY style=3D"PADDING-LEFT: 10px; PADDING-RIGHT: 10px; PADDING-TOP:=
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=3D#ffffff   CanvasTabStop=3D"true" name=3D"Compose message area">
<DIV><FONT size=3D2 face=3DArial>Tony,</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial>Depends on the&nbsp; un supported spa=
n , I think=20
RG58&nbsp;&nbsp; was used by&nbsp; DL stations a while ago&nbsp; as&nb=
sp; 80 mtr=20
dipoles, I use the&nbsp; old 7&nbsp; strand conduit&nbsp; (35 amp ?)=
 at home and=20
the&nbsp; 600&nbsp; ft&nbsp; delta &nbsp;loop at gb4fpr&nbsp; also&nbs=
p; uses=20
this with&nbsp; 200 ft&nbsp; sides, some&nbsp; sag has&nbsp; occurred,=
 but=20
the&nbsp; wire is&nbsp; still&nbsp; in place &nbsp;, I'm not&nbsp; sur=
e if=20
the&nbsp; pvc coating or the&nbsp; location by sea , may be&nbsp; both=
, causes=20
quite a&nbsp; build up of&nbsp; static&nbsp; on the&nbsp; Ae </FONT></=
DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial>when&nbsp; we replaced the&nbsp; long=
 wire, I=20
used&nbsp; the&nbsp; telephone&nbsp; drop-wire&nbsp; , 4 conductors &n=
bsp;and 3=20
steel&nbsp; support cables in a pvc outer , the&nbsp; previous ae used=
 conduit=20
cable.</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial>I didn't foresee any&nbsp; problems&n=
bsp; in using=20
the&nbsp; phone&nbsp; cable , the&nbsp; span is 750 feet , took a litt=
le&nbsp;=20
tug to&nbsp; get it&nbsp; tight&nbsp; , but&nbsp; there&nbsp; is very&=
nbsp;=20
little&nbsp; sag&nbsp; and the&nbsp; electrical performance is quite=
 impressive=20
, Andy's G4JNT cw beacon&nbsp; reads&nbsp; 3/4 scale on the&nbsp; JRC=
 rx S-Meter=20
and the&nbsp; Q on hf looks to be&nbsp; good , although to&nbsp; be fa=
ir&nbsp;=20
the&nbsp; wire is 90&nbsp; foot above the&nbsp; sea/beach , not&nbsp;=
=20
proportionally&nbsp; high, but&nbsp; clear of&nbsp; objects </FONT></D=
IV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial>Though&nbsp; I would&nbsp; from&nbsp;=
 my own&nbsp;=20
experience, suggest that addressing the feed and current distribution=
 in a&nbsp;=20
vertical&nbsp; antenna , be it&nbsp; quite short, may give unexpected=
=20
performance on 500. </FONT></DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial>G .. </FONT></DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>
<DIV style=3D"FONT: 10pt Tahoma">
<DIV><BR></DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A   title=3D"mailto:ei8=
jk@o2.ie&#10;CTRL + Click to follow link"   href=3D"mailto:ei8jk@o2.ie=
">Tony Baldwin</A> </DIV>
<DIV><B>Sent:</B> Thursday, June 24, 2010 4:10 PM</DIV>
<DIV><B>To:</B> <A   title=3D"mailto:rsgb_lf_group@blacksheep.org&#10;=
CTRL + Click to follow link"   href=3D"mailto:rsgb_lf_group@blacksheep=
.org">rsgb_lf_group@blacksheep.org</A>=20
</DIV>
<DIV><B>Subject:</B> LF: Antenna wire</DIV></DIV></DIV>
<DIV><BR></DIV>
<DIV><FONT size=3D2 face=3DArial>Sorry to ask a stupid newbie question=
 but what is=20
the best wire for my aerial ?</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial>I had thought&nbsp;about getting&nbsp=
;a couple of=20
100m rolls of cheapo RG58 and soldering the centre and screen together=
, or is=20
there a better way ?</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial>Tony, EI8JK</FONT></DIV>
<br><br></BODY></HTML>

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