Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-df05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 73D5338000088; Tue, 14 May 2013 06:07:55 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1UcC73-0000P2-CE for rs_out_1@blacksheep.org; Tue, 14 May 2013 11:05:41 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1UcC72-0000Ot-NV for rsgb_lf_group@blacksheep.org; Tue, 14 May 2013 11:05:40 +0100 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1UcC6z-0003zi-OL for rsgb_lf_group@blacksheep.org; Tue, 14 May 2013 11:05:39 +0100 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id r4EA5WP0005839 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 14 May 2013 12:05:33 +0200 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id r4E9AZlG020251 for ; Tue, 14 May 2013 11:10:35 +0200 Message-ID: <5191FF86.7030609@iup.uni-heidelberg.de> Date: Tue, 14 May 2013 11:10:30 +0200 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <518F8EC1.1090707@eastlink.ca> <519015B5.8080100@iup.uni-heidelberg.de> <51911233.5050100@iup.uni-heidelberg.de> <000b01ce5002$c8593810$0201a8c0@marco09cqcdi12> <3A2A46C1CE48411797517C797691D0B7@F6CNIAndyHP> <240EFD4BC9864D46968BE7C39DC5B28A@F6CNIAndyHP> In-Reply-To: <240EFD4BC9864D46968BE7C39DC5B28A@F6CNIAndyHP> X-Spam-Score: -2.9 (--) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hi Andre, Thanks for the images, they are very nice! Maybe i will start some experiments with tubes some day. At work we've done some simple experiments with car bulb (glass body destroyed) burning in vacuum (arround 1E-8 mbar). We applied about 120V between the filament and case and actually got an emission current of a few 100 uA. That was exciting :-) [...] Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [129.206.210.211 listed in list.dnswl.org] -0.6 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 4c0633a540d76adc241b9d3cede72a57 Subject: Re: LF: Re: Make your own tubes for a LF/MF PA? Content-Type: multipart/alternative; boundary="------------030903010307000404000609" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: ** X-Spam-Status: No, hits=2.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE, SUBJ_YOUR_OWN 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 x-aol-global-disposition: G x-aol-sid: 3039ac1d40d951920cfa06a6 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------030903010307000404000609 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay2.uni-heidelberg.de id r4EA5WP0005839 Hi Andre, Thanks for the images, they are very nice! Maybe i will start some=20 experiments with tubes some day. At work we've done some simple experiments with car bulb (glass body=20 destroyed) burning in vacuum (arround 1E-8 mbar). We applied about 120V=20 between the filament and case and actually got an emission current of a=20 few 100 uA. That was exciting :-) 73, Stefan/DK7FC Am 14.05.2013 09:21, schrieb Andre Guy=E9: > For fun : Photos about the F2FO tubes. Tx and PA making by Jeff F6BWO > [...] --------------030903010307000404000609 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi Andre,

Thanks for the images, they are very nice! Maybe i will start some experiments with tubes some day.

At work we've done some simple experiments with car bulb (glass body destroyed) burning in vacuum (arround 1E-8 mbar). We applied about 120V between the filament and case and actually got an emission current of a few 100 uA. That was exciting :-)

73, Stefan/DK7FC


Am 14.05.2013 09:21, schrieb Andre Guyé:
For fun : Photos about the F2FO tubes. Tx and PA making by Jeff F6BWO
[...]
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