Return-Path: Received: (qmail 28982 invoked from network); 22 Jan 2002 10:47:28 -0000 Content-Transfer-Encoding: 8bit Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 22 Jan 2002 10:47:28 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 17268 invoked from network); 22 Jan 2002 10:47:26 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys.services.quay.plus.net with SMTP; 22 Jan 2002 10:47:26 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16SyOg-0005Rh-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 22 Jan 2002 10:43:22 +0000 Received: from mail2.cc.kuleuven.ac.be ([134.58.10.50]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16SyOf-0005Rb-00 for rsgb_lf_group@blacksheep.org; Tue, 22 Jan 2002 10:43:21 +0000 Received: from LCBD15.fys.kuleuven.ac.be (LCBD15.fys.kuleuven.ac.be [134.58.80.15]) by mail2.cc.kuleuven.ac.be (8.12.1/8.12.1) with SMTP id g0MAg1ko044238 for ; Tue, 22 Jan 2002 11:42:03 +0100 Message-ID: <3.0.1.16.20020122113832.32cfb6fc@pb623250.kuleuven.be> X-Sender: pb623250@pb623250.kuleuven.be X-Mailer: Windows Eudora Pro Version 3.0.1 (16) Date: Tue, 22 Jan 2002 11:38:32 To: rsgb_lf_group@blacksheep.org From: "Rik Strobbe" Subject: Re: LF: Radiated power In-reply-to: <5.1.0.14.2.20020122083729.00a60ec0@mail.pncl.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: >According to the CCIR standard propagation curves (Vol 5, "Propagation in >non-ionised media", Recommendation 368-4) a radiated power of 1 kW at 136 >kHz from a short vertically-polarised monopole would produce a field >strength at Jim's distance of 500 uV/m. > >Jim measured 50 uV/m so MM0ALM's radiated power must be 10 dB below 1 kW - >100 watts. Jim's measurements I have found to be pretty accurate in the >past but if anyone else can make accurate field strength measurements >perhaps they would do so next time MM0ALM comes on. Hello Walter, Isn't 50uV/m 20dB down on 500uV/m ? So if 500uV/m equals 1kW raditated power then 50uV/m equals 10 Watt radiated power. 73, Rik ON7YD