Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id w2DAhhWb029534 for ; Tue, 13 Mar 2018 11:43:46 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1evhBX-0000Mt-JK for rs_out_1@blacksheep.org; Tue, 13 Mar 2018 10:29:35 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1evhBV-0000Mk-8w for rsgb_lf_group@blacksheep.org; Tue, 13 Mar 2018 10:29:33 +0000 Received: from gmy2-mh804.smtproutes.com ([94.186.192.133]) by relay1.thorcom.net with esmtp (Exim 4.89) (envelope-from ) id 1evhBN-0005vL-Ni for rsgb_lf_group@blacksheep.org; Tue, 13 Mar 2018 10:29:31 +0000 X-Katharion-ID: 1520936941.77297.gmy2-mh804 Received: from servigilant.vigilant.es ([85.60.35.36]) by gmy2-mh804.smtproutes.com [(94.186.192.133)] with ESMTP via TCP (TLSv1/TLS_DHE_RSA_WITH_AES_256_CBC_SHA); 13 Mar 2018 10:29:01 +0000 Received: from servigilant.vigilant.local ([fe80::c40d:8140:d722:5448]) by servigilant.vigilant.local ([fe80::c40d:8140:d722:5448%13]) with mapi id 14.03.0123.003; Tue, 13 Mar 2018 11:28:56 +0100 From: =?iso-8859-1?Q?VIGILANT_Luis_Fern=E1ndez?= To: "rsgb_lf_group@blacksheep.org" Thread-Topic: LF: LU1DOW soon in MF/LF Thread-Index: AdO55g6sPOeGIq8zQ1m98+mbMIrGof//+fYA//5tmuA= Date: Tue, 13 Mar 2018 10:28:55 +0000 Message-ID: <579355A36AEE9D4FA555C45D556003AB9ABB2634@servigilant.vigilant.local> References: <579355A36AEE9D4FA555C45D556003AB9ABB1B77@servigilant.vigilant.local> <244965788.20180312101810@gmail.com> In-Reply-To: <244965788.20180312101810@gmail.com> Accept-Language: es-ES, en-US Content-Language: es-ES X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [192.168.0.22] MIME-Version: 1.0 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hi Chris, LF Oscar answered the question. I'll try to translate, but can't promise not to make a mistake in tube terminology :-) He is not using filament choke as this is a direct heating tethrode. So the midpoint of the filament transformer secondary is connected to ground The driving is to the grid with a tuned circuit. It works in C class for QRSS and B Class for DFCW. And YES, this a dangerous high voltage bricolage and a waste of energy. Just the filament is sucking 35.5 Amps :-O [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- X-Scan-Signature: 4ead635eadbaebfaa92cfec77deb715d Subject: RE: LF: LU1DOW soon in MF/LF Content-Type: text/plain; charset="iso-8859-1" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=TO_ADDRESS_EQ_REAL 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 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by klubnl.pl id w2DAhhWb029534 Hi Chris, LF Oscar answered the question. I'll try to translate, but can't promise not to make a mistake in tube terminology :-) He is not using filament choke as this is a direct heating tethrode. So the midpoint of the filament transformer secondary is connected to ground The driving is to the grid with a tuned circuit. It works in C class for QRSS and B Class for DFCW. And YES, this a dangerous high voltage bricolage and a waste of energy. Just the filament is sucking 35.5 Amps :-O Oscar plans to test first single carrier in LF with LU8YD at 1000Km first to check if all is going as in previous tests some time ago. After that he will switch to MF and test again 73 de Luis EA5DOM