Return-Path: Received: (qmail 12958 invoked from network); 25 Nov 2003 10:35:21 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by mailstore with SMTP; 25 Nov 2003 10:35:21 -0000 Received: (qmail 24614 invoked from network); 25 Nov 2003 10:35:28 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Priority: 3 X-MSMail-Priority: Normal X-Spam-detection-level: 11 Received: from post.thorcom.com (193.82.116.20) by warrior.services.quay.plus.net with SMTP; 25 Nov 2003 10:35:22 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1AOaWh-00054G-Hs for rsgb_lf_group-outgoing@blacksheep.org; Tue, 25 Nov 2003 10:34:35 +0000 Received: from [213.218.75.234] (helo=smtp05.freeler.nl) by post.thorcom.com with esmtp (Exim 4.14) id 1AOaWg-000547-H4 for rsgb_lf_group@blacksheep.org; Tue, 25 Nov 2003 10:34:34 +0000 Received: (qmail 8098 invoked from network); 25 Nov 2003 10:34:33 -0000 X-Fake-Domain: unknown Received: from unknown (HELO w8k3f0.freeler.nl) ([62.21.146.165]) (envelope-sender ) by smtp05.freeler.nl (qmail-ldap-1.03) with SMTP for ; 25 Nov 2003 10:34:31 -0000 Message-ID: <5.1.0.14.0.20031125111716.02ed16c0@POP3.freeler.nl> X-Sender: FRE0000086604@POP3.freeler.nl X-Mailer: QUALCOMM Windows Eudora Version 5.1 Date: Tue, 25 Nov 2003 11:29:32 +0100 To: rsgb_lf_group@blacksheep.org From: "Dick Rollema" In-reply-to: <014401c3b29e$1babb2c0$15309bd2@vaiosn> References: MIME-Version: 1.0 Subject: Re: LF: PA0SE Field Strength Meter for 137 kHz Content-Type: text/html; charset=windows-1252 X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on post.thorcom.com X-Spam-Status: No, hits=0.0 required=5.0 tests=HTML_MESSAGE autolearn=no version=2.60 X-SA-Exim-Scanned: Yes Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rsgb_lf_group-outgoing@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-Spam-Rating: 1 Content-transfer-encoding: 8bit To All from PA0SE,

Many thanks to Stewart and several others who explained what went wrong with my e-mail for some subscribers to the reflector.

I emphasize that the formula can only be used within distances from the transmitter where the field strength decreases in a linear way with distance and attenuation due to absorption by the ground can be neglected.

73, Dick, PA0SE

At 07:17 24-11-03 -0800, you wrote:

Hi Eric and all,

Dick's post, made with Eudora, contained this HTML fragment:

The correct formula is: 
P = 0.0111(E *d)2 in which
...

Depending on your mail reader and/or browser, the superscript 2 may not
have displayed correctly.

The correct formula is: P = 0.0111 * (E * d) ** 2
or P equals 0.0111 times ((E times d) squared)

Hope this is clear.

73,

Stewart

----- Original Message -----
From: "Eric KD5UWL" <eric@willow.nutstreet.net>
To: "LF-Group" <rsgb_lf_group@blacksheep.org>
Sent: Monday, November 24, 2003 6:44 AM
Subject: Re: LF: PA0SE Field Srength Meter for 137 kHz

> On Mon, 24 Nov 2003, Dick Rollema wrote:
>
> > produces a certain field strength is wrongly given as
> > P = 0.0111(E * d)2.
> >
> > The correct formula is:
> >
> > P = 0.0111(E *d)2 in which:
>
> Hi, Dick,
>
> Sorry -- I don't see the difference. Did you include the wrong one?
>
> 73
> Eric
>
>
>