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: : mailn 1480; 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 v3INJRhp011204 for ; Wed, 19 Apr 2017 01:19:29 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1d0cLT-0001um-Kq for rs_out_1@blacksheep.org; Wed, 19 Apr 2017 00:15:39 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1d0cLN-0001ud-4y for rsgb_lf_group@blacksheep.org; Wed, 19 Apr 2017 00:15:33 +0100 Received: from mailfe05.swip.net ([212.247.154.129] helo=swip.net) by relay1.thorcom.net with esmtp (Exim 4.89) (envelope-from ) id 1d0cLK-0006vh-2Y for rsgb_lf_group@blacksheep.org; Wed, 19 Apr 2017 00:15:31 +0100 X-T2-Spam-Status: No, hits=0.8 required=5.0 tests=BAYES_50 Received: from [81.224.109.193] (account cxu-dcw-tyr@tele2.se HELO [192.168.1.2]) by mailfe05.swip.net (CommuniGate Pro SMTP 5.4.4) with ESMTPSA id 717062419 for rsgb_lf_group@blacksheep.org; Wed, 19 Apr 2017 01:15:19 +0200 To: rsgb_lf_group@blacksheep.org References: <15b72b3360e.marcocadeddu@tin.it> <731997437.20170416124847@gmail.com> <58F525B4.9090008@posteo.de> <1229336941.20170418125840@gmail.com> <58F60567.20001@posteo.de> <58F63C48.4020006@posteo.de> <4F0D3050-F629-44E7-BCA2-98BCC8B29D17@gmail.com> <9b95f193-7cc1-2033-54ec-fc287f687c6d@tele2.se> <58F67DF9.9070502@posteo.de> From: Johan Bodin Message-ID: Date: Wed, 19 Apr 2017 01:15:18 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <58F67DF9.9070502@posteo.de> X-Scan-Signature: c1f72e5acb1277e013f90c915ad7ad68 Subject: Re: LF: A transductor for power regulation? Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit 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: 11381 Thanks Stefan, yes, the Pungs-Drossel is an early transductor! I just love the sentence: "Das Mikrofon musste sich unmittelbar am Sender befinden und der Sprecher war ständig in Gefahr, sich an den vom Antennenstom durchflossenen Geräten den Mund oder die Nase zu verbrennen." Water cooled microphones were hi-tech in those days! :-) 73 de Johan SM6LKM DK7FC wrote: > Hello Johan, > > Very nice, thanks for the link! > > Here is another link which explains something, also with a historic > background. > https://de.wikipedia.org/wiki/Pungs-Drossel > The site is only in German but maybe it translates good in > https://translate.google.com/translate?hl=de&sl=de&tl=en&u=https%3A%2F%2Fde.wikipedia.org%2Fwiki%2FPungs-Drossel > > 73, Stefan