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Message-ID: <1379003836.10140.YahooMailNeo@web133204.mail.ir2.yahoo.com>
Date: Thu, 12 Sep 2013 17:37:16 +0100 (BST)
From: M0FMT <m0fmt@yahoo.co.uk>
To: "rsgb_lf_group@blacksheep.org" <rsgb_lf_group@blacksheep.org>
In-Reply-To: <1379002564.27322.YahooMailNeo@web133206.mail.ir2.yahoo.com>
MIME-Version: 1.0
Subject: Re: LF: Re: Broadcast Ground Systems
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Hi again all=0A=A0=0AIf I am going to give out URL's I may as well try two =
get it right!=0A=A0=0ATry..... http://www.tubebooks.org/technical_books_onl=
ine.htm =0A=0A73 es GL Pete M0FMT IO91UX=0A=0A=0A__________________________=
______=0A From: M0FMT <m0fmt@yahoo.co.uk>=0ATo: "rsgb_lf_group@blacksheep.o=
rg" <rsgb_lf_group@blacksheep.org> =0ASent: Thursday, 12 September 2013, 17=
:16=0ASubject: Re: LF: Re: Broadcast Ground Systems=0A  =0A=0A=0AHi All=0A=
=A0=0APlease send all radio and electronic books that are out of copy-right=
 to this web site http://www.tubebooks.org/technical_books_online.htmm wher=
e in due course they will be scanned and published for anyone to down load =
for free. This ensures that=A0such works of art are not on one bookshelf bu=
t on many.=0A=0A73 es GL Pete M0FMT IO91UX=0A=0A=0A________________________=
________=0A From: Alan Melia <alan.melia@btinternet.com>=0ATo: rsgb_lf_grou=
p@blacksheep.org =0ASent: Thursday, 12 September 2013, 1:16=0ASubject: LF: =
Re: Broadcast Ground Systems=0A  =0A=0AHi this is interesting reading, but =
beware of applyiing it directly to =0Aamateur LF!. BC antennas are usually =
monoples and the ground requirement for =0Athose is somewhat different to a=
n amateur antenna where height is often =0Alimited and "T" or inverted "L" =
antennas are used. Always size your ground =0Aextent by measuring the syste=
m, so that you know when to stop wasting copper =0Aand effort! Radials are =
only really effective if they are at least 1/8th =0Awavelength....that=0A r=
equires a lot of real estate at LF. Also BC engineers =0Acan often choose t=
heir site, amateurs rarely can.=0A=0AAlan=0AG3NYK=0A=0A----- Original Messa=
ge ----- =0AFrom: "David Weinreich" <David.Weinreich@globalstar.com>=0ATo: =
<rsgb_lf_group@blacksheep.org>; <600m@yahoogroups.com>=0ASent: Thursday, Se=
ptember 12, 2013 12:34 AM=0ASubject: LF: Broadcast Ground Systems=0A=0A=0AD=
ear LF/MFers,=0A=0AI have a copy of "Radio Broadcast Ground Systems" that w=
as prepared by Smith =0AElectronics of Cleveland, Ohio in 1972. The report =
provides a digest of =0Amaterial from Laport's book, the Antenna Engineerin=
g Handbook and the famous =0Aarticle by Brown, Lewis=0A and Epstein from th=
e IRE Proceedings. I will gladly =0Asend it to whoever wants it and is will=
ing to pay the postage from =0ACleveland, Ohio. First come first served, re=
ferenced to e-mail arrival time.=0A=0ABest regards,=0A=0ADavid Weinreich=0A=
WA2VUJ/8
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<html><body><div style=3D"color:#000; background-color:#fff; font-family:ar=
ial, helvetica, sans-serif;font-size:12pt"><div><span>Hi again all</span></=
div><div><span></span>&nbsp;</div><div><span>If I am going to give out URL'=
s I may as well try two get it right!</span></div><div><span></span>&nbsp;<=
/div><div><span>Try..... <font face=3D"Calibri"><a href=3D"http://www.tubeb=
ooks.org/technical_books_online.htm">http://www.tubebooks.org/technical_boo=
ks_online.htm</a> </font></span><br></div><div>73 es GL Pete M0FMT IO91UX</=
div><br>  <div style=3D"font-family: arial, helvetica, sans-serif; font-siz=
e: 12pt;"> <div style=3D"font-family: times new roman, new york, times, ser=
if; font-size: 12pt;"> <div dir=3D"ltr"> <div class=3D"hr" style=3D"margin:=
 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); height: 0px; =
line-height: 0; font-size: 0px;" contenteditable=3D"false" readonly=3D"true=
"></div>  <font face=3D"Arial" size=3D"2"> <b><span style=3D"font-weight:
 bold;">From:</span></b> M0FMT &lt;m0fmt@yahoo.co.uk&gt;<br> <b><span style=
=3D"font-weight: bold;">To:</span></b> "rsgb_lf_group@blacksheep.org" &lt;r=
sgb_lf_group@blacksheep.org&gt; <br> <b><span style=3D"font-weight: bold;">=
Sent:</span></b> Thursday, 12 September 2013, 17:16<br> <b><span style=3D"f=
ont-weight: bold;">Subject:</span></b> Re: LF: Re: Broadcast Ground Systems=
<br> </font> </div> <div class=3D"y_msg_container"><br><div id=3D"yiv687522=
1756"><div><div style=3D"color: rgb(0, 0, 0); font-family: arial, helvetica=
, sans-serif; font-size: 12pt; background-color: rgb(255, 255, 255);"><div>=
<span>Hi All</span></div><div><span></span>&nbsp;</div><div><span>Please se=
nd all radio and electronic books that are out of copy-right to this web si=
te <a href=3D"http://www.tubebooks.org/technical_books_online.htmm" target=
=3D"_blank" rel=3D"nofollow">http://www.tubebooks.org/technical_books_onlin=
e.htmm</a> where in due course they will be scanned and published for anyon=
e to down
 load for free. This ensures that&nbsp;such works of art are not on one boo=
kshelf but on many.</span><br></div><div>73 es GL Pete M0FMT IO91UX</div><b=
r>  <div style=3D"font-family: arial, helvetica, sans-serif; font-size: 12p=
t;"> <div style=3D"font-family: times new roman, new york, times, serif; fo=
nt-size: 12pt;"> <div dir=3D"ltr"> <div class=3D"yiv6875221756hr" style=3D"=
margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); height=
: 0px; line-height: 0; font-size: 0px;"></div>  <font face=3D"Arial" size=
=3D"2"> <b><span style=3D"font-weight: bold;">From:</span></b> Alan Melia &=
lt;alan.melia@btinternet.com&gt;<br> <b><span style=3D"font-weight: bold;">=
To:</span></b> rsgb_lf_group@blacksheep.org <br> <b><span style=3D"font-wei=
ght: bold;">Sent:</span></b> Thursday, 12 September 2013, 1:16<br> <b><span=
 style=3D"font-weight: bold;">Subject:</span></b> LF: Re: Broadcast Ground =
Systems<br> </font> </div> <div class=3D"yiv6875221756y_msg_container"><br>=
Hi this is
 interesting reading, but beware of applyiing it directly to <br>amateur LF=
!. BC antennas are usually monoples and the ground requirement for <br>thos=
e is somewhat different to an amateur antenna where height is often <br>lim=
ited and "T" or inverted "L" antennas are used. Always size your ground <br=
>extent by measuring the system, so that you know when to stop wasting copp=
er <br>and effort! Radials are only really effective if they are at least 1=
/8th <br>wavelength....that=0A requires a lot of real estate at LF. Also BC=
 engineers <br>can often choose their site, amateurs rarely can.<br><br>Ala=
n<br>G3NYK<br><br>----- Original Message ----- <br>From: "David Weinreich" =
&lt;<a href=3D"mailto:David.Weinreich@globalstar.com" target=3D"_blank" rel=
=3D"nofollow" ymailto=3D"mailto:David.Weinreich@globalstar.com">David.Weinr=
eich@globalstar.com</a>&gt;<br>To: &lt;<a href=3D"mailto:rsgb_lf_group@blac=
ksheep.org" target=3D"_blank" rel=3D"nofollow" ymailto=3D"mailto:rsgb_lf_gr=
oup@blacksheep.org">rsgb_lf_group@blacksheep.org</a>&gt;; &lt;<a href=3D"ma=
ilto:600m@yahoogroups.com" target=3D"_blank" rel=3D"nofollow" ymailto=3D"ma=
ilto:600m@yahoogroups.com">600m@yahoogroups.com</a>&gt;<br>Sent: Thursday, =
September 12, 2013 12:34 AM<br>Subject: LF: Broadcast Ground Systems<br><br=
><br>Dear LF/MFers,<br><br>I have a copy of "Radio Broadcast Ground Systems=
" that was prepared by Smith <br>Electronics of Cleveland, Ohio in 1972. Th=
e report provides a digest of <br>material from
 Laport's book, the Antenna Engineering Handbook and the famous <br>article=
 by Brown, Lewis=0A and Epstein from the IRE Proceedings. I will gladly <br=
>send it to whoever wants it and is willing to pay the postage from <br>Cle=
veland, Ohio. First come first served, referenced to e-mail arrival time.<b=
r><br>Best regards,<br><br>David Weinreich<br>WA2VUJ/8<br><br><br><br><br><=
br></div> </div> </div>  </div></div></div><br><br></div> </div> </div>  </=
div></body></html>
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