Return-Path: Received: (qmail 5271 invoked from network); 22 May 2001 12:37:45 -0000 Received: from unknown (HELO warrior-inbound.servers.plus.net) (212.159.14.227) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 22 May 2001 12:37:45 -0000 Received: (qmail 28628 invoked from network); 22 May 2001 12:37:10 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior with SMTP; 22 May 2001 12:37:10 -0000 X-Priority: 3 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 152BKu-0003Gy-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 22 May 2001 13:32:28 +0100 X-MSMail-Priority: Normal Received: from [213.2.16.106] (helo=rsgb.org.uk) by post.thorcom.com with esmtp (Exim 3.16 #2) id 152BKt-0003Gt-00 for rsgb_lf_group@blacksheep.org; Tue, 22 May 2001 13:32:27 +0100 Received: from miked by rsgb.org.uk with SMTP (MDaemon.PRO.v4.0.0.R) for ; Tue, 22 May 2001 13:22:53 +0100 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 From: "Mike Dennison" To: rsgb_lf_group@blacksheep.org Date: Tue, 22 May 2001 13:22:51 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 8bit Subject: LF: LF Round Table Report Message-ID: <3B0A682B.18219.DCF570@localhost> X-Mailer: Pegasus Mail for Win32 (v3.12c) X-Return-Path: miked@mail X-MDaemon-Deliver-To: rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Notes on LF Round Table at Wimborne, Dorset, 20 May 2001 The meeting was attended by: G3XDV, M0BMU, G4JNT, G3YGF, G3AQC, G3LDO, G3YSX, G3GRO, G3HEJ and G3OLB. In addition, G0API represented our hosts the Flight Refuelling Amateur Radio Society, and GW3JBH called in as he happened to be holidaying in his caravan next door. Several attendees were unable to stay until the end at 1700. The morning saw a demonstration of a Tesla coil. The coil was about 1.5m high and it generated very spectacular sparks half a metre long. Other morning activities included a car boot sale of Litz wire, variometers etc. After a splendid pub lunch, the formal session started with M0BMU describing the latest data mode, WOLF, and how to keep its transmit bandwidth down. This was followed by G4JNT showing off his innovative 600W transmitter, and describing the various stages in its development. The final half hour was given over to a discussion. Two topics were raised: how to make the most of the 73kHz band before it is taken away, and how to encourage others onto 136kHz. It was felt that there should be a concerted effort to cross the Atlantic on 73kHz, although there may be up to 10dB more losses to overcome. To this end, stations in the US and Canada would be asked to monitor the HBG time signal on 75.0kHz to get experience with this part of the spectrum, and to report on propagation variations. Perhaps there should be a 73kHz activity period (month?) next winter to concentrate effort in the UK, mainland Europe and America. Several suggestions were made as to how to encourage newcomers onto 136kHz. It was felt that once active, stations were reasonably well looked after by other band users. The problem was identified as many people trying to listen on the band with poor receive systems, then hearing nothing and giving up. Some way was needed to ensure that casual listeners would have a fair chance of hearing one of the stronger stations. Suggestions were: * Run a contest, or series of cumulative contests, perhaps as part of the RSGB's "LF Cumulatives" which run on 160, 80 and 40m. Scoring could be similar to a VHF event. Include a receiving category. * Encourage crossband activity between 136kHz and 3.5 or 7MHz. This could be helped by a RadCom article on LF receiving techniques, followed by a crossband contest which could be entered either as an LF or MF station. Crossband preferred frequencies should be published. * Informal CW beacons, perhaps using the transatlantic slot below 136kHz, during daylight. G3XDV said he would raise these issues with the RSGB HF Contests Committee and the RadCom Editor. Our thanks to Flight Refuelling for the use of their club house. =============== Mike, G3XDV (IO91VT) http://www.lf.thersgb.net