Return-Path: Received: (qmail 18276 invoked from network); 4 Feb 2000 17:18:43 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by grants.core.plus.net.uk with SMTP; 4 Feb 2000 17:18:43 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12GmEP-0002J5-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 04 Feb 2000 17:09:17 +0000 Received: from as-img-4.compuserve.com ([149.174.217.147] helo=spamgaad.compuserve.com) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12GmEO-0002J0-00 for rsgb_lf_group@blacksheep.org; Fri, 04 Feb 2000 17:09:16 +0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (from mailgate@localhost) by spamgaad.compuserve.com (8.9.3/8.9.3/SUN-1.7) id MAA14412 for rsgb_lf_group@blacksheep.org; Fri, 4 Feb 2000 12:09:07 -0500 (EST) Date: Fri, 4 Feb 2000 12:07:44 -0500 From: "DEREK ATTER" X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Subject: LF: OG5UFO - Good signals into UK on 137.00 Khz To: rsgb_lf_group@blacksheep.org Message-ID: <200002041208_MC2-97D2-2456@compuserve.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Disposition: inline Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: >From Derek, G3GRO, IO91VC, Had a good QSO with Reino OG5UFO last night starting at 00-45 UTC on 137.00Khz lasting for 20 miutes. He was 549/559 and gave me RST329 then later RST 539 with some QSB. Reino was almost exactly on the same frequency within a few Hz of CFH in Canada who at that time of night was S8 with me and completely swamping Reino until I switched in the canceller loop antenna. Then CFH completely vanished leaving Reino in the clear with a nice quiet background - fortunately the noise QRM which I often experience from a nearby British Telecom cable carrying a high speed data stream was absent. For informtion, Reino suggested that QSLs being sent direct should be held back until after 29th of Feb. The signal canceller is working very well with a very simple arrangement. The plane of the single turn loop antenna runs East-West the size of which is roughly 8m by 12m slung between two trees. The signal from the loop is subtracted from the main omni-directional inverted L antenna giving a resultant cardioid polar pattern with a null which can be steered anywhere within a 180 degree azimuth sector either to the east or to the west switched by inverting the phase of the loop relative to the L W. transmitting antenna. The main use is to cancel Loran QRM but since the Loran is in the SW direction from me and CFH to the west, both can be pretty well cancelled at the same time when the optimum direction of the cardioid is pointed towards the continent. 73 de Derek, G3GRO IO91VC, 300W, Antenna : 50 m long inverted L up at 16m AGL