Re: LF: Re: Broadcast Ground Systems

[M0FMT <m0fmt@yahoo.co.uk>]

Hi All

 

Please send all radio and electronic books that are out of copy-right to this web site http://www.tubebooks.org/technical_books_online.htmm where in due course they will be scanned and published for anyone to down load for free. This ensures that such works of art are not on one bookshelf but on many.

73 es GL Pete M0FMT IO91UX

From: Alan Melia <alan.melia@btinternet.com>
To: rsgb_lf_group@blacksheep.org
Sent: Thursday, 12 September 2013, 1:16
Subject: LF: Re: Broadcast Ground Systems

Hi this is interesting reading, but beware of applyiing it directly to
amateur LF!. BC antennas are usually monoples and the ground requirement for
those is somewhat different to an amateur antenna where height is often
limited and "T" or inverted "L" antennas are used. Always size your ground
extent by measuring the system, so that you know when to stop wasting copper
and effort! Radials are only really effective if they are at least 1/8th
wavelength....that requires a lot of real estate at LF. Also BC engineers
can often choose their site, amateurs rarely can.

Alan
G3NYK

----- Original Message -----
From: "David Weinreich" <David.Weinreich@globalstar.com>
To: <rsgb_lf_group@blacksheep.org>; <600m@yahoogroups.com>
Sent: Thursday, September 12, 2013 12:34 AM
Subject: LF: Broadcast Ground Systems


Dear LF/MFers,

I have a copy of "Radio Broadcast Ground Systems" that was prepared by Smith
Electronics of Cleveland, Ohio in 1972. The report provides a digest of
material from Laport's book, the Antenna Engineering Handbook and the famous
article by Brown, Lewis and Epstein from the IRE Proceedings. I will gladly
send it to whoever wants it and is willing to pay the postage from
Cleveland, Ohio. First come first served, referenced to e-mail arrival time.

Best regards,

David Weinreich
WA2VUJ/8