Return-Path: Received: (qmail 14488 invoked from network); 27 Jul 1999 10:29:18 +0100 Received: from magnus.plus.net.uk (HELO magnus.force9.net) (195.166.128.27) by guiness.force9.net with SMTP; 27 Jul 1999 10:29:18 +0100 Received: (qmail 19779 invoked from network); 27 Jul 1999 09:31:57 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by magnus.plus.net.uk with SMTP; 27 Jul 1999 09:31:57 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 1193AJ-0007SW-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 27 Jul 1999 10:04:51 +0100 Received: from [143.179.236.31] (helo=Iguanodon.big-orange.net) by post.thorcom.com with esmtp (Exim 3.02 #1) id 1193AI-0007S9-00 for rsgb_lf_group@blacksheep.org; Tue, 27 Jul 1999 10:04:50 +0100 Received: from w8k3f0 ([143.179.150.34]) by Iguanodon.big-orange.net (Netscape Messaging Server 3.6) with SMTP id AAA2AF5 for ; Tue, 27 Jul 1999 11:03:31 +0200 Message-ID: <002a01bed80f$9a23d060$2296b38f@w8k3f0> From: "Dick Rollema" To: rsgb_lf_group@blacksheep.org Subject: LF: Re: PA0SE and LF sourcebook Date: Tue, 27 Jul 1999 10:58:38 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 4.72.3110.5 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org Sender: >From PA0SE Alan Melia wrote: . >Fascinating measurements Dick, I must go back and read those again. Though I >really wonder what use standards are when the noise is S5.....I suppose >these were formulated for receive stations listening to big commercial >signals like DCF39, or for quieter HF bands. What I called noise is my local noise level, which is certainly not like white noise. it originates from LORAN and unidentified sources. The IARU-recommendation was certainly not meant for the lF-band; that did not exist when it was made. Even on the amateur HF-bands the noise level is almost always over S2 or so. At my location on 80 m daytime noise is about S4. On 40 m a bit lower. I suspect that the noise on 136 kHz at my QTH is above avarage. I think it must be lower at quite a few stations I have worked. 73, Dick, PA0SE