Return-Path: Received: (qmail 3493 invoked from network); 26 Jun 2001 20:44:49 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 26 Jun 2001 20:44:49 -0000 Received: (qmail 9642 invoked from network); 26 Jun 2001 20:43:38 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 26 Jun 2001 20:43:38 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 15Eza8-0003hW-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 26 Jun 2001 21:37:08 +0100 X-Priority: 3 X-MSMail-Priority: Normal Received: from mailout02.sul.t-online.com ([194.25.134.17] helo=mailout02.sul.t-online.de) by post.thorcom.com with esmtp (Exim 3.16 #2) id 15Eza6-0003hQ-00 for rsgb_lf_group@blacksheep.org; Tue, 26 Jun 2001 21:37:07 +0100 Received: from fwd00.sul.t-online.de by mailout02.sul.t-online.de with smtp id 15EzZO-00033M-06; Tue, 26 Jun 2001 22:36:22 +0200 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from (0482183881-0001@[193.159.25.231]) by fwd00.sul.t-online.com with smtp id 15EzZC-1UzYRMC; Tue, 26 Jun 2001 22:36:10 +0200 From: "jannsen" <0482183881-0001@t-online.de> To: rsgb_lf_group@blacksheep.org References: <3B3882DB.22709.BD1883@localhost> Subject: Re: LF: Loop antenna by DF3LP... X-Mailer: T-Online eMail 2.34 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Date: Tue, 26 Jun 2001 22:36:10 +0200 Message-ID: <15EzZC-1UzYRMC@fwd00.sul.t-online.com> X-Sender: 0482183881-0001@t-dialin.net Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Mike Dennison schrieb: > > I built Peters loop but changed it in four steps. at the end it was a uge > > copper-pipe rotary octaeder 15,2 m round. 4,6 to 5,0 m in diam. > > Uwe, > > I have looked at your web site and can see the loop antenna but I would like > to > know how you match it to coax or a pre-amp. Can you help? > > Your antenna farm looks good, my 18m long antenna will fit into a small space > in your garden. > > 73 > > > Mike, G3XDV (IO91VT) > http://www.lf.thersgb.net > Hi Mike es all, yes I can help. pse look up Peters site: www.qsl.net/df3lp/137kHz/rx-loop.html. the simple pre-amp works vy good, no IMs. instead of the power supply via coax I do use an accu. matching the loop by inserting a wire of 3/4 to 1/2 length of the loop round (find the 50 ohm point by try and error) proposed on this reflector did not satisfy: the sensitivity has gone (but the nulls were some what sharper). regards Uwe/dj8wx