Return-Path: Received: (qmail 12731 invoked from network); 19 Sep 2002 14:56:26 -0000 Content-Transfer-Encoding: 8bit Received: from warrior.services.quay.plus.net (212.159.14.227) by mailstore with SMTP; 19 Sep 2002 14:56:26 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 4448 invoked from network); 19 Sep 2002 14:56:31 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from post.thorcom.com (193.82.116.70) by warrior.services.quay.plus.net with SMTP; 19 Sep 2002 14:56:31 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.10) id 17s2iL-0006Eh-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 19 Sep 2002 15:55:33 +0100 Received: from [212.164.44.2] (helo=astral.omskcity.com) by post.thorcom.com with esmtp (Exim 4.10) id 17s2iL-0006EW-00 for rsgb_lf_group@blacksheep.org; Thu, 19 Sep 2002 15:55:33 +0100 Received: from fitec.omskcity.com (mu01.dialup1.infomsk.ru [212.164.45.193]) by astral.omskcity.com (8.9.3/8.9.3) with SMTP id VAA3d89e46d0c3a for ; Thu, 19 Sep 2002 21:51:25 +0700 (OSS) Date: Thu, 19 Sep 2002 22:32:44 +0000 (GMT) From: "Alexander S. Yurkov" To: rsgb_lf_group@blacksheep.org In-reply-to: <5.1.0.14.0.20020919162016.02900258@pb623250.kuleuven.be> Message-ID: MIME-Version: 1.0 Subject: Re: LF: IK2DED beacon and E field probe. Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Spam-Status: No, hits=0.1 required=5.0tests=IN_REP_TO,DOUBLE_CAPSWORD,DATE_IN_FUTURE_06_12version=2.31 Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Hi, Rik and Group. On Thu, 19 Sep 2002, Rik Strobbe wrote: > Antenna current = 1.8A > Theory : radiated power = 0.06*1.8^2 = 194mW EMRP (= 583mW EIRP or 355mW ERP) > Reality : about 35mW ERP (based on field strength measurement) > Difference : -10dB ! > Reason : antenna surrounded by many trees -10 dB? Hmmmm... To decrease ERP by 10 dB total curent in trees should be about 67 per cent of antenna current. May be it is some another reason? 2 or 3 dB is not surprise, but 10 dB.... I wonder why my message on RX3QFM does not go to a Group? Two times I try to send and there is no echo for a long time... But another MSG go sucsesfully. I'll try ones more... 73 de RA9MB/Alex http://www.qsl.net/ra9mb