Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: EATSERVER: mailn 1166; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v38F99g9009390 for ; Sat, 8 Apr 2017 17:09:10 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cwrut-0001BX-DN for rs_out_1@blacksheep.org; Sat, 08 Apr 2017 16:04:43 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cwrus-0001BO-Ta for rsgb_lf_group@blacksheep.org; Sat, 08 Apr 2017 16:04:42 +0100 Received: from simone.ucs.mun.ca ([134.153.232.76]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.89) (envelope-from ) id 1cwrup-00089s-R3 for rsgb_lf_group@blacksheep.org; Sat, 08 Apr 2017 16:04:41 +0100 Received: from plato.ucs.mun.ca (plato.ucs.mun.ca [134.153.232.153]) by simone.ucs.mun.ca (8.13.8/8.13.8) with ESMTP id v38F4bDH031227 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sat, 8 Apr 2017 12:34:37 -0230 Date: Sat, 8 Apr 2017 12:34:37 -0230 (NDT) From: jcraig@mun.ca X-X-Sender: jcraig@plato.ucs.mun.ca To: rsgb_lf_group@blacksheep.org In-Reply-To: Message-ID: References: <159c6d4aa99-2cc9-11356@webprd-m36.mail.aol.com>, <58864091.2070406@posteo.de>, <588A62AE.2358.E190C0@roelof.ndb.demon.nl> MIME-Version: 1.0 X-Scan-Signature: 87966b345956c8ef3389b993f6a18f4e Subject: LF: QRSS10 477.7 kHz/New TX Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed 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-Scanned-By: MIMEDefang 2.75 Status: O X-Status: X-Keywords: X-UID: 11156 On Tuesday a new tx (gw3uep design) was built and worked very well. An IRFP140, sm capacitors and 1mm wire was used although L2 (7uH) beacme quite warm. The 1 uF caps (type unknown... yellow and stamped BEC C11C) did their bypassing without complaint. Roelof had an O copy on yesterday morning (the 7th) during the first on the air test. G4JNT Andy's explanation of how the reactances are absorbed by the L network which brings the drain impedance to 50 ohms is enlightening. Is there a way to find impedance at the drain or is this just the R value on Alan's G3NYK Class E spreadsheet? The new TX will be on again 9 Apr. 0000-0900 utc Hopefully this design will be merciful on FETs. If not, there's a 3-500 waiting on the shelf. 73's Joe VO1NA