Return-Path: Received: (qmail 512 invoked from network); 24 Nov 2003 12:24:25 -0000 Received: from unknown (HELO netmail02.services.quay.plus.net) (212.159.14.221) by mailstore with SMTP; 24 Nov 2003 12:24:25 -0000 Received: (qmail 24715 invoked by uid 10001); 24 Nov 2003 12:24:24 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Spam-detection-level: 11 X-Priority: 3 X-MSMail-Priority: Normal Received: from post.thorcom.com (193.82.116.20) by netmail02.services.quay.plus.net with SMTP; 24 Nov 2003 12:23:28 -0000 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1AOFjV-0001RX-PU for rsgb_lf_group-outgoing@blacksheep.org; Mon, 24 Nov 2003 12:22:25 +0000 Received: from [193.212.240.200] (helo=scan.telenor.net) by post.thorcom.com with esmtp (Exim 4.14) id 1AOFjV-0001Ix-62 for rsgb_lf_group@blacksheep.org; Mon, 24 Nov 2003 12:22:25 +0000 X-Fake-Domain: tns-fbu-22-209.corp.telenor.no Received: from tns-fbu-22-209.corp.telenor.no ([134.47.162.190] [134.47.162.190]) by scan.telenor.net with ESMTP for rsgb_lf_group@blacksheep.org; Mon, 24 Nov 2003 13:21:52 +0100 X-Fake-Domain: tns-fbu-22-212.corp.telenor.no Received: from tns-fbu-22-212.corp.telenor.no ([134.47.162.91]) by tns-fbu-22-209.corp.telenor.no with Microsoft SMTPSVC(5.0.2195.5329); Mon, 24 Nov 2003 13:21:52 +0100 X-Fake-Domain: TNS-FBU-2E-003.corp.telenor.no Received: from TNS-FBU-2E-003.corp.telenor.no ([134.47.164.101]) by tns-fbu-22-212.corp.telenor.no with Microsoft SMTPSVC(5.0.2195.5329); Mon, 24 Nov 2003 13:21:52 +0100 content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Date: Mon, 24 Nov 2003 13:21:52 +0100 X-Bad-Message-ID: no DNS (TNS-FBU-2E-003.corp.telenor.no) Message-ID: <2D280BB697C7EE4C979C5C89925418EF0181DBEA@TNS-FBU-2E-003.corp.telenor.no> Thread-Topic: JASON anyone ? Thread-Index: AcOx+LHA8wS1xtEPRo6YDjvh40mNmQAi+Tsg From: jan-martin.noding@telenor.com To: rsgb_lf_group@blacksheep.org X-OriginalArrivalTime: 24 Nov 2003 12:21:52.0340 (UTC) FILETIME=[8AAB9140:01C3B285] MIME-Version: 1.0 Subject: LF: Tuning LF inductors and inexpensive 10000pF variable capacitors Content-Type: text/html; charset=windows-1252 X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on post.thorcom.com X-Spam-Status: No, hits=1.0 required=5.0 tests=HTML_40_50,HTML_FONTCOLOR_BLUE,HTML_FONT_BIG,HTML_MESSAGE,NO_REAL_NAME autolearn=no version=2.60 X-SA-Exim-Scanned: Yes Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rsgb_lf_group-outgoing@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-Spam-Rating: 2 Content-transfer-encoding: 8bit

somewhat puzzled that it hasn't been any discussions about the technique mentioned by G3VA Pat in last Radcom (11/2003). Suppose all of you subscribes to Radcom, but I've noted some from his note on http://home.online.no/~la8ak/c97.htm Although the notes refers to results made for HF, comparative experiments could be made for LF.

it was also mentioned (not shown on my page) a "high voltage" variable capacitor ...up to 1500pF, suppose it could solve some problems even for LF, and stacking more such devices could easily make a lowcost 10nF variable capacitor

73 Jan-Martin, LA8AK

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J M Nøding, Datakvalitet, TTS, Kristiansand