Return to KLUBNL.PL main page
| To: | <[email protected]> |
|---|---|
| Subject: | LF: Re: Broadcast Ground Systems |
| From: | "Alan Melia" <[email protected]> |
| Date: | Thu, 12 Sep 2013 01:16:03 +0100 |
| Authentication-results: | mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of [email protected]) smtp.mail=[email protected]; dkim=fail (test mode) [email protected] |
| Delivered-to: | [email protected] |
| Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=btinternet.com; s=s1024; t=1378944965; bh=oDugr2Z4rZQDzsWaw+X4pbUri8d3w984FklV8t8Gy+4=; h=X-Yahoo-Newman-Id:X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:X-Rocket-Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-Antivirus:X-Antivirus-Status; b=LFJTlU9Sm/qxPpwdHJtk4GQ+69caNT78Js6TZJArV2WtMxn/FM1bjgbjMZ7F9X+Yu9jol2fK1HHfaQAKcC8BYhLv+A1564/cEIBT4Zxv/g3PLIh662QoubGZhzobjLmz/ypTKZWPi19yTlzqSY7tsuNQ14I8Ivuoj0fJ/cnGS9I= |
| References: | <[email protected]> <AB5C5F55D39BBF46BA47A2A4375A0C4549794D88@PO1-MLP.ad.corp.globalstar.com> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
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" <[email protected]> To: <[email protected]>; <[email protected]> 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 |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | LF: Broadcast Ground Systems, David Weinreich |
|---|---|
| Next by Date: | Re: LF: Re: Broadcast Ground Systems, M0FMT |
| Previous by Thread: | LF: Broadcast Ground Systems, David Weinreich |
| Next by Thread: | Re: LF: Re: Broadcast Ground Systems, M0FMT |
| Indexes: | [Date] [Thread] [Top] [All Lists] |