Return-Path: Received: (qmail 6731 invoked from network); 12 Nov 2002 17:19:48 -0000 Received: from murphys.services.quay.plus.net (212.159.14.225) by mailstore with SMTP; 12 Nov 2002 17:19:48 -0000 Received: (qmail 28931 invoked from network); 12 Nov 2002 17:19:13 -0000 Received: from post.thorcom.com (193.82.116.70) by murphys.services.quay.plus.net with SMTP; 12 Nov 2002 17:19:13 -0000 X-Priority: 3 X-MSMail-Priority: Normal X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.10) id 18BefX-0001Ye-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 12 Nov 2002 17:17:43 +0000 Received: from [193.212.240.200] (helo=virus-out.ttyl.com) by post.thorcom.com with esmtp (Exim 4.10) id 18BefW-0001Xi-00 for rsgb_lf_group@blacksheep.org; Tue, 12 Nov 2002 17:17:42 +0000 Received: from [134.47.162.90] by virusscan.ttyl.com with ESMTP for rsgb_lf_group@blacksheep.org; Tue, 12 Nov 2002 18:17:11 +0100 Received: from tns-fbu-22-214.corp.telenor.no ([134.47.162.92]) by tns-fbu-22-208.corp.telenor.no with Microsoft SMTPSVC(5.0.2195.4453); Tue, 12 Nov 2002 18:17:01 +0100 Received: from tns-fbu-22-213.corp.telenor.no ([134.47.162.191]) by tns-fbu-22-214.corp.telenor.no with Microsoft SMTPSVC(5.0.2195.4453); Tue, 12 Nov 2002 18:17:01 +0100 Received: from TNS-FBU-2E-003.corp.telenor.no ([134.47.164.201]) by tns-fbu-22-213.corp.telenor.no with Microsoft SMTPSVC(5.0.2195.4453); Tue, 12 Nov 2002 18:17:00 +0100 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 content-class: urn:content-classes:message MIME-Version: 1.0 Date: Tue, 12 Nov 2002 18:17:00 +0100 Message-ID: <2D280BB697C7EE4C979C5C89925418EF368F87@TNS-FBU-2E-003.corp.telenor.no> Thread-Topic: Re: RX Frame Aerial for 136kc/s - still experimenting..... Thread-Index: AcKKYgYggyenvdWMTdKBZPw9gTgbYgADNLZw From: jan-martin.noding@telenor.com To: rsgb_lf_group@blacksheep.org X-OriginalArrivalTime: 12 Nov 2002 17:17:00.0987 (UTC) FILETIME=[501CE8B0:01C28A6F] Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit Subject: LF: SV: Re: RX Frame Aerial for 136kc/s - still experimenting..... X-Spam-Status: No, hits=-0.3 required=5.0tests=EMAIL_ATTRIBUTION,NO_REAL_NAME,QUOTED_EMAIL_TEXT, SPAM_PHRASE_00_01version=2.42 Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group The centertap for varicap reference is seen connected to coax cable ground, so it does work but I am not certain if it is a point to use actual ground for the frame, it is grounded in the shack via the RG59 cable, and this is put some times through a high-µ ferrit core, so AC-wise it is not much ground, but DC-wise is OK (not sure if anything in the shack is ground) 73 Jan-Martin -----Opprinnelig melding----- Fra: Johan Bodin [mailto:sm6lkm.jbeab@swipnet.se] Sendt: 12. november 2002 16:30 Til: rsgb_lf_group@blacksheep.org Emne: LF: Re: RX Frame Aerial for 136kc/s - still experimenting..... LA8AK wrote: > Not sure if it is still a point to ground the center of the tuned loop. There is no hi-z amplifier on the tuned loop that can suffer from common mode hum but you still need a low impedance DC path to GND for the varicap bias, otherwise the ever-present 50Hz hum would wobble the tuning with disastrous results. 73 Johan SM6LKM