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=FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,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 v3FHgpEc024200 for ; Sat, 15 Apr 2017 19:42:53 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1czRg4-0001QG-PG for rs_out_1@blacksheep.org; Sat, 15 Apr 2017 18:40:04 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1czRg4-0001Q7-GS for rsgb_lf_group@blacksheep.org; Sat, 15 Apr 2017 18:40:04 +0100 Received: from smtp2web.tin.it ([212.216.176.236]) by relay1.thorcom.net with esmtp (Exim 4.89) (envelope-from ) id 1czRg1-0006P1-Ea for rsgb_lf_group@blacksheep.org; Sat, 15 Apr 2017 18:40:03 +0100 Received: from feu20 (10.192.64.30) by smtp2web.tin.it (8.6.060.43) id 5822EBD202D13699 for rsgb_lf_group@blacksheep.org; Sat, 15 Apr 2017 19:39:59 +0200 Received: from (79.41.170.177) by wmlighttin.pc.tim.it; Sat, 15 Apr 2017 19:39:59 +0200 Message-ID: <15b72b3360e.marcocadeddu@tin.it> Date: Sat, 15 Apr 2017 19:39:59 +0200 (CEST) From: "marcocadeddu@tin.it" To: rsgb_lf_group@blacksheep.org Mime-Version: 1.0 X-Originating-IP: 79.41.170.177 X-Scan-Signature: 4ead635eadbaebfaa92cfec77deb715d Subject: LF: Happy Easter MF LF VLF Content-Type: text/plain;charset="UTF-8" Content-Transfer-Encoding: 7bit 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: 11330 Best wishes to all the group. A special one to Chris and his brave FEts ;-) Tonite while the QRP TX is on on MF, a couple of proud FET will challenge for the last time on my QRO TX: will apply low DC power and then increase sloooooooooowly till the standard level monitoring everything. If also this last trial will produce smoke instead of RF power will try an H Bridge or half bridge Decca style! I'm just concerned how to find place for the inductor.. the box is a bit crowded ;-) but with the low required Q probably can do it with a low permability ferrite (I have in the junk an FT240-61 that should be a reasonable compromise). By the way, amazed from the picture of the huge stack of toroids used from Stefan for the fine tuning! 73 de Marco, IK1HSS