Return-Path: Received: (qmail 8284 invoked from network); 7 Jul 2003 10:39:28 -0000 Received: from murphys.services.quay.plus.net (212.159.14.225) by mailstore with SMTP; 7 Jul 2003 10:39:28 -0000 Received: (qmail 9684 invoked from network); 7 Jul 2003 10:39:21 -0000 Received: from post.thorcom.com (193.82.116.70) by murphys.services.quay.plus.net with SMTP; 7 Jul 2003 10:39:20 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.14) id 19ZTNf-0006lD-MQ for rsgb_lf_group-outgoing@blacksheep.org; Mon, 07 Jul 2003 11:37:59 +0100 Received: from [62.253.164.48] (helo=mta8-svc.business.ntl.com) by post.thorcom.com with esmtp (Exim 4.14) id 19ZTNb-0006l4-4S for rsgb_lf_group@blacksheep.org; Mon, 07 Jul 2003 11:37:55 +0100 Received: from p4o2b7 ([62.252.208.127]) by mta8-svc.business.ntl.com (InterMail vM.4.01.03.37 201-229-121-137-20020806) with SMTP id <20030707103753.XKMX291.mta8-svc.business.ntl.com@p4o2b7> for ; Mon, 7 Jul 2003 11:37:53 +0100 Message-ID: <000a01c3446b$711fba40$5967fea9@p4o2b7> From: "Ian Kyle" To: rsgb_lf_group@blacksheep.org References: <5.1.0.14.0.20030706225246.0220c860@POP3.freeler.nl> Date: Mon, 7 Jul 2003 10:36:37 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Subject: Re: LF: Field strength calcs. Content-Type: text/html; charset=windows-1252 X-Spam-Status: No, hits=0.8 required=5.0tests=HTML_20_30,HTML_MESSAGE,REFERENCESversion=2.55 X-Spam-Checker-Version: SpamAssassin 2.55 (1.174.2.19-2003-05-19-exp) 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 Content-transfer-encoding: 8bit

Thanks Dick,

that is what I took out of our previous exchange on FS, but I am rather shaken to find that according to the signal strengths received on a calibrated Datong/TS850 setup from a1t. 1m.sq aperiodic loop at 2.2 and 3.3 kms range, the actual radiated power on 73 KHz is only between 2 and 3 milliwatts! (Without using the Datong - effectively as a preamp - the signal strength simply could not be measured)

This does not seem to equate with the distances on QSOs where I was actually audible.

Regrettably no more tests can be made on 73 but when I get back from holiday in Normandy at the beginning of August the whole business can be re-addressed on 136.

That is assuming that keeping numbers 2 nd 4 grandsons entertained during said 'holiday' leaves me in any fit state to do anything!

73 de,

Ian MI0AYZ/GI8AYZ