Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-db01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 6474E38000083; Mon, 10 Oct 2011 09:46:45 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RDGAz-0004iW-2e for rs_out_1@blacksheep.org; Mon, 10 Oct 2011 14:45:53 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RDGAy-0004iN-Kh for rsgb_lf_group@blacksheep.org; Mon, 10 Oct 2011 14:45:52 +0100 Received: from mail-wy0-f171.google.com ([74.125.82.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RDGAv-0001um-FA for rsgb_lf_group@blacksheep.org; Mon, 10 Oct 2011 14:45:52 +0100 Received: by wyh13 with SMTP id 13so9568599wyh.16 for ; Mon, 10 Oct 2011 06:45:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=message-id:from:to:references:in-reply-to:subject:date:mime-version :content-type:content-transfer-encoding:x-priority:x-msmail-priority :importance:x-mailer:x-mimeole; bh=034zHgQbgpQehoZhXcx3jgCoen7L+/2Ql0jCuGqgTjI=; b=U6eamtW5lEe5ecFel2bBxiIIzv2j9oHlsWxDu6/H7eCbp1vQZT60xDsbU9wWUVVZXA coEnz9ff2Z972/Qdy3cNuVTNfRcY+nmd1hQUD4/CpRbJFYzufXoXHRQ4ceu1+SnP/D5x RzHRQWJikqU4SyAfvcfcvovD48We2z/8iV4q8= Received: by 10.216.221.42 with SMTP id q42mr5888619wep.78.1318254343566; Mon, 10 Oct 2011 06:45:43 -0700 (PDT) Received: from PcMinto (h50208.upc-h.chello.nl. [62.194.50.208]) by mx.google.com with ESMTPS id y10sm32889620wbm.14.2011.10.10.06.45.41 (version=SSLv3 cipher=OTHER); Mon, 10 Oct 2011 06:45:42 -0700 (PDT) Message-ID: <345EE24DE17E473A9536640001262F14@PcMinto> From: Minto Witteveen To: References: <4E9083DB.5090603@iup.uni-heidelberg.de> <4E909FCE.7060302@telus.net> <4E90A3F1.8080004@iup.uni-heidelberg.de> <4E92806A.5020106@telia.com> <003f01cc874f$176bd210$0401a8c0@xphd97xgq27nyf> In-Reply-To: <003f01cc874f$176bd210$0401a8c0@xphd97xgq27nyf> Date: Mon, 10 Oct 2011 15:45:40 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3538.513 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3538.513 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: Re: Laser link... Content-Type: text/plain; format=flowed; charset="ISO-8859-15"; reply-type=original Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.1 required=5.0 tests=MISSING_OUTLOOK_NAME 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-SCOLL-SCORE: 0:2:509355616:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d304.2 ; domain : gmail.com DKIM : fail x-aol-sid: 3039ac1d40554e92f7455aa3 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ..but don't forget the restraining orders for those pesky qrm generating neighbours in a 300 meter radius... Minto pa3bca -------------------------------------------------------------------------- Ceterum censeo Carthaginem delendam esse -----Original Message----- From: mal hamilton Sent: Monday, October 10, 2011 15:18 To: rsgb_lf_group@blacksheep.org Subject: Re: LF: Laser link... Stefan es Friends If you need all these add on gadgets for LF es MF ie lazers, fm repeaters, carrier pigeons then the Cause is Lost. Concentrate instead on proper LF Antennas, Sensitive receivers and plenty of RF, this way and you will achieve the object!! g3kev ----- Original Message ----- From: "Johan H. Bodin" To: Sent: Monday, October 10, 2011 5:19 AM Subject: Re: LF: Laser link... > Hi Stefan, > > Clint Turner http://ka7oei.com/ has interesting information on his "optical > communications page" http://modulatedlight.org/optical_comms/optical_index.html. > Linear's design note DN399 about photodiode amplifiers may also be worth reading > http://cds.linear.com/docs/Design%20Note/dn399f.pdf (it uses a BF862 FET which I > think is already one of your favourites). > > Oops... 650nm wavelength is perhaps O.T. on this reflector. > > 73 > Johan SM6LKM > >