Return-Path: Received: (qmail 13776 invoked from network); 11 Jan 2000 20:03:36 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by teachers.core.plus.net.uk with SMTP; 11 Jan 2000 20:03:36 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 1287GX-00068O-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 11 Jan 2000 19:47:41 +0000 Received: from mailhost.netscapeonline.co.uk ([194.200.20.13]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 1287GW-00068J-00 for rsgb_lf_group@blacksheep.org; Tue, 11 Jan 2000 19:47:40 +0000 Received: from [195.44.217.103] (helo=netscapeonline.co.uk) by mailhost.netscapeonline.co.uk with esmtp (Exim 3.02 #1) id 1287GT-000231-00 for rsgb_lf_group@blacksheep.org; Tue, 11 Jan 2000 19:47:38 +0000 X-Priority: 3 X-MSMail-Priority: Normal Message-ID: <387BF921.4EF3E26B@netscapeonline.co.uk> Date: Tue, 11 Jan 2000 19:46:41 -0800 From: "g3kev" X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Organization: Netscape Online member X-Mailer: Mozilla 4.6 [en-gb]C-CCK-MCD NetscapeOnline.co.uk (Win95; I) X-Accept-Language: en-GB,en MIME-Version: 1.0 To: "rsgb" Subject: LF: CFH Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: To those interested CFH today 110100 This morning at 0900 S7 then it either switched off or disappeared until I hrd it agn at 1530 about S5 and now at 1843 utc barely audible and it is dark. The theory about daylight/night time propogation is flawed on LF as observed at this qth. I get the same propogation from CFH and the Greek rtty day and night but there are some fluctiations which are attributed to absorption by the D layer whether it be day or night. I also have heard OH1TN and IK5ZPV stronger during daylight hours than night time. With any propogation depending on D, E or F1 F2 there will be big variations because of unstable ionization of the layers day or night. Observations from others could be useful on long haul signal reception. 73 de Mal/G3KEV