Return-Path: Received: (qmail 38773 invoked from network); 25 Aug 2004 21:52:46 -0000 Received: from unknown (HELO ptb-spamcore01.plus.net) (192.168.71.1) by ptb-mailstore01.plus.net with SMTP; 25 Aug 2004 21:52:46 -0000 Received: from mailnull by ptb-spamcore01.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1C05mb-000O0G-8o for dave@picks.force9.co.uk; Wed, 25 Aug 2004 22:58:17 +0100 Received: from [192.168.67.1] (helo=ptb-mxcore01.plus.net) by ptb-spamcore01.plus.net with esmtp (Exim 4.32; FreeBSD) id 1C05mb-000O0D-6R for dave@picks.force9.co.uk; Wed, 25 Aug 2004 22:58:17 +0100 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim 4.30; FreeBSD) id 1C05hF-0000Lt-Ge for dave@picks.force9.co.uk; Wed, 25 Aug 2004 21:52:45 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1C05h6-0005DA-0R for rs_out_1@blacksheep.org; Wed, 25 Aug 2004 22:52:36 +0100 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1C05h5-0005D1-JP for rsgb_lf_group@blacksheep.org; Wed, 25 Aug 2004 22:52:35 +0100 Received: from mail.libertysurf.net ([213.36.80.91]) by relay.thorcom.net with esmtp (Exim 4.41) id 1C05h2-00012b-IN for rsgb_lf_group@blacksheep.org; Wed, 25 Aug 2004 22:52:35 +0100 Received: from jboi0045tiscali (213.36.158.241) by mail.libertysurf.net (6.5.036) id 412C14C600227F4E for rsgb_lf_group@blacksheep.org; Wed, 25 Aug 2004 23:52:26 +0200 Message-ID: <002c01c48aed$c2f2f0c0$f19e24d5@jboi0045tiscali> From: "F6CWN" To: rsgb_lf_group@blacksheep.org References: Date: Wed, 25 Aug 2004 21:49:56 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1437 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 X-SPF-Result: relay.thorcom.net: 213.36.80.91 is neither permitted nor denied by domain of tiscali.fr X-Spam-Score: 0.4 (/) X-Spam-Report: autolearn=no,HTML_50_60=0.183,HTML_MESSAGE=0.001,RCVD_IN_NJABL=0.1,RCVD_IN_SORBS=0.1 Subject: LF: =?iso-8859-1?Q?Re:_RE:_Re:_Re:_Re=B2:_Tune_the_loop...?= Content-Type: text/html; charset=windows-1252 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.2 required=5.0 tests=HTML_50_60,HTML_MESSAGE autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-Spam-Filtered: by PlusNet SpamCORE (v3.00) Content-transfer-encoding: 8bit
25./08/2004   2145z
 
 
 Hello Jan-Martin and the list,
 
1/100 for the coupling aera ratio seem to be good indeed Jan-Martin, i will try.
Thanks for the info.
 
A little question: is that possible to couple little loops  like VHF yagis with
 delays lines and hybrid mixers? Maybe a stupid question... just coming... 
 
73: Jeff
 
----- Original Message -----
From: jan-martin.noding@telenor.com
To: rsgb_lf_group@blacksheep.org
Sent: Wednesday, August 25, 2004 4:49 PM
Subject: LF: RE: Re: Re: ReČ: Tune the loop with varicap or tuning condenser

Hi
 
I got to the conclusion that the coupling loops should have an area of 1/100's the tuned loop.
Note that some suggest using tuning capacitor for the loop. My loop tuning is so sharp - it is 25dB variation from 136-138.8kHz, so the only way out is to use varicap tuning
 
73 Jan-Martin