Return-Path: Received: (qmail 28294 invoked from network); 1 Jul 1999 10:59:08 +0100 Received: from magnet.plus.net.uk (HELO magnet.force9.net) (195.166.128.26) by guiness.force9.net with SMTP; 1 Jul 1999 10:59:08 +0100 Received: (qmail 15441 invoked from network); 1 Jul 1999 09:59:58 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by magnet.plus.net.uk with SMTP; 1 Jul 1999 09:59:58 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 10zdR9-0000eo-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 01 Jul 1999 10:47:19 +0100 X-Priority: 3 Received: from gwa.fe.bosch.de ([195.254.27.2] ident=firewall-user) by post.thorcom.com with esmtp (Exim 3.02 #1) id 10zdR7-0000ej-00 for rsgb_lf_group@blacksheep.org; Thu, 01 Jul 1999 10:47:18 +0100 X-MSMail-Priority: Normal Received: (from uucp@localhost) by gwa.fe.bosch.de (8.9.1/8.9.1) id LAA02510 for ; Thu, 1 Jul 1999 11:48:11 +0200 (MET DST) Received: from mailgate.fe.internet.bosch.de( 10.0.4.3) by gwa.fe.bosch.de via smap (V2.1) id xma001808; Thu, 1 Jul 99 11:47:51 +0200 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from fez7164.server.bosch.de (FEZ7164.server.bosch.de [128.15.0.164]) by mailgate.fe.internet.bosch.de (8.9.1/8.9.1) with ESMTP id LAA14798 for ; Thu, 1 Jul 1999 11:46:54 +0200 (MET DST) Received: by FEZ7164.server.bosch.de with Internet Mail Service (5.5.2448.0) id <3B25SFQK>; Thu, 1 Jul 1999 11:46:56 +0200 Message-ID: From: "Hampe Wolfgang \(FRB/FKA1\)" To: rsgb_lf_group@blacksheep.org Subject: LF: AW: Re: Fw: Measuring field strength Date: Thu, 1 Jul 1999 11:46:53 +0200 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2448.0) Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org Sender: Sorry Dave, but I couldnt read your HTML-Mail....:-( pse dont use HTML in Mail.... 73 Wolf > -----Ursprüngliche Nachricht----- > Von: Dave Brown [SMTP:tractorb@ihug.co.nz] > Gesendet am: Donnerstag, 1. Juli 1999 11:03 > An: rsgb_lf_group@blacksheep.org > Betreff: LF: Re: Fw: Measuring field strength > > ÿş > http-equiv=Content-Type> name=GENERATOR>

size=2>Dick,

For your info, both your > messages re measuring field strength did make it to the reflector. >

In case anyone wants > to use the measurement method you outlined with an SLMS, but at > other than 137 kHz, the relationship including the frequency term is as > follows:

Loop induced > emf(volts) = 2*pi*(field strength in v/m)*(loop area in sq. metres)* > (loop turns)/wavelength.

size=2>Which for the single turn untuned circular loop case you quoted, > can be simplified to;

size=2>Loop induced emf (microvolts) = > 16.449*freq(kHz)*loopdia(m)*loopdia(m)*field strength(v/m)

Ref: Terman, "Radio Engineering", > Section 11, Para 18.

size=2>73

Dave

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