Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mk03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 345B4380000D4; Thu, 25 Oct 2012 15:42:03 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TRTId-0007y7-3h for rs_out_1@blacksheep.org; Thu, 25 Oct 2012 20:41:03 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TRTIc-0007xy-Lv for rsgb_lf_group@blacksheep.org; Thu, 25 Oct 2012 20:41:02 +0100 Received: from cpsmtpb-ews10.kpnxchange.com ([213.75.39.15]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1TRTIa-0008Ao-HR for rsgb_lf_group@blacksheep.org; Thu, 25 Oct 2012 20:41:01 +0100 Received: from cpsps-ews06.kpnxchange.com ([10.94.84.173]) by cpsmtpb-ews10.kpnxchange.com with Microsoft SMTPSVC(7.5.7601.17514); Thu, 25 Oct 2012 21:40:43 +0200 Received: from CPSMTPM-CMT102.kpnxchange.com ([195.121.3.18]) by cpsps-ews06.kpnxchange.com with Microsoft SMTPSVC(7.5.7601.17514); Thu, 25 Oct 2012 21:40:44 +0200 Received: from acer ([81.204.139.159]) by CPSMTPM-CMT102.kpnxchange.com with Microsoft SMTPSVC(7.0.6002.18264); Thu, 25 Oct 2012 21:40:58 +0200 Message-ID: <004401cdb2e8$a7ce14b0$0402a8c0@acer> From: "henny" To: References: <4084B089A7FF496CAC1CE9A2459B9C47@AGB> <7E9EB5FA653147298EEBB4676DCDD9DD@White> <3DD7F0DC19984F7CBF611D59430EEFA3@AGB> <508912A0.5060902@iup.uni-heidelberg.de> Date: Thu, 25 Oct 2012 21:40:57 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3664 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3664 X-OriginalArrivalTime: 25 Oct 2012 19:40:58.0560 (UTC) FILETIME=[A8133400:01CDB2E8] X-RcptDomain: blacksheep.org X-Spam-Score: 0.0 (/) 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: Tu for the capture Stefan, best 73's Henny pa3cpm... ----- Original Message ----- From: Stefan Schäfer To: rsgb_lf_group@blacksheep.org Sent: Thursday, October 25, 2012 12:21 PM Subject: Re: LF: OPERA OPTICAL BEACON (way off topic) but is based on 17 KHz :) [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [213.75.39.15 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: f3d1da032404cd5ad9531631c09e3b44 Subject: Re: LF: OPERA OPTICAL BEACON (way off topic) but is based on 17 KHz :) Content-Type: multipart/alternative; boundary="----=_NextPart_000_0041_01CDB2F9.6B2A7D80" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,HTML_MESSAGE 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: 3039ac1d61875089960b53f0 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_0041_01CDB2F9.6B2A7D80 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Tu for the capture Stefan, best 73's Henny pa3cpm... ----- Original Message -----=20 From: Stefan Sch=E4fer=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Thursday, October 25, 2012 12:21 PM Subject: Re: LF: OPERA OPTICAL BEACON (way off topic) but is based on = 17 KHz :) Am 25.10.2012 01:34, schrieb Graham:=20 [...] fsk , of course , but simplicity is the object , switching the = (led) light off and on could reduce the duty by 50% where = heat is a problem , [...] Why should it be an advantage to reduce the duty cycle to 50% and = where do you expect heat problems when driving a LED?=20 Yes there are some high power modules but even 10W power dissipation = should be managable for everyone. 73, Stefan/DK7FC -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG - www.avg.com=20 Version: 8.5.455 / Virus Database: 271.1.1/5352 - Release Date: = 10/24/12 18:37:00 ------=_NextPart_000_0041_01CDB2F9.6B2A7D80 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Tu for the capture Stefan,
best 73's
Henny pa3cpm...
----- Original Message -----
From:=20 Stefan = Sch=E4fer
Sent: Thursday, October 25, = 2012 12:21=20 PM
Subject: Re: LF: OPERA OPTICAL = BEACON=20 (way off topic) but is based on 17 KHz :)


Am 25.10.2012 01:34, schrieb Graham:=20
[...]
 
fsk  , of  course , but  simplicity is  = the =20 object  , switching the (led)  light  off =20 and  on could   reduce the  duty  by =20 50%  where  heat is  a problem ,
[...]

Why should it = be an=20 advantage to reduce the duty cycle to 50% and where do you expect heat = problems when driving a LED?

Yes there are some high power = modules but=20 even 10W power dissipation should be managable for = everyone.

73,=20 Stefan/DK7FC


No virus found in this incoming message.
Checked by AVG = -=20 www.avg.com
Version: 8.5.455 / Virus Database: 271.1.1/5352 - = Release=20 Date: 10/24/12 18:37:00
------=_NextPart_000_0041_01CDB2F9.6B2A7D80--