Return-Path: Received: (qmail 18610 invoked from network); 25 Nov 2001 15:40:23 -0000 Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 25 Nov 2001 15:40:23 -0000 Received: (qmail 9090 invoked from network); 25 Nov 2001 15:40:17 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys.services.quay.plus.net with SMTP; 25 Nov 2001 15:40:17 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 1681LG-0005kj-00 for rsgb_lf_group-outgoing@blacksheep.org; Sun, 25 Nov 2001 15:37:14 +0000 Received: from tvout.mail.uk.easynet.net ([194.6.96.5]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 1681LF-0005ke-00 for rsgb_lf_group@blacksheep.org; Sun, 25 Nov 2001 15:37:13 +0000 Received: from ericadodd (tnt-13-73.easynet.co.uk [212.134.22.73]) by tvout.mail.uk.easynet.net (Postfix) with SMTP id 1EEEC63160 for ; Sun, 25 Nov 2001 15:36:30 +0000 (GMT) Message-ID: <000b01c175c7$584a71a0$491686d4@ericadodd> From: "g3ldo" To: rsgb_lf_group@blacksheep.org References: <4f.14ca23c4.293040de@aol.com> <007401c174d6$fc38f8a0$a3ca28c3@ericadodd> <001501c174ec$f212b260$0300a8c0@charter.net> <000201c1751b$6063bb00$3dce28c3@ericadodd> <3C000DE3.AED73455@att.net> <3C0011CB.3156569C@att.net> <001d01c175b1$0b29bb30$0400000a@parissn2> <3C01071D.34B4F3AC@att.net> Subject: Re: LF: RTTY on 73.3 kHz? Date: Sun, 25 Nov 2001 15:38:26 -0000 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 5.50.4522.1200 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hi Dexter & Bob > I lost all signal from the 73.3 kHz RTTY station by 0100 UT last > evening. QRN was very high so the signal could have been just below my > noise level. Relative signal strength logged are as follows: > > 2100 UT -52 dbm > 2300 UT -48 dbm > 0000 UT -47.5 dbm > 0100 UT undetectable > 0200 UT " > 0300 UT " > 0400 UT " > > Bob, K3DJC, in Pa. also was hearing the signal. Excellent! This can be the basis for monitoring 73kHz T/A propagation. Expect ham radio signals to be about 30 - 35 dB down on this! (anyone who would like to correct this figure - please do). Propagation studies on 136kHz were done by Alan, G3NYK, who monitored the Canadian Naval station CFH in Nova Scotia. See www.qsl.net/on7yd/ for details. This could be a good Lowfer project in the USA Regards, Peter, G3LDO e-mail Web