Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mc01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 93368380000DC; Mon, 10 Oct 2011 03:33:10 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RDALY-0002WN-Hv for rs_out_1@blacksheep.org; Mon, 10 Oct 2011 08:32:24 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RDALY-0002WE-4x for rsgb_lf_group@blacksheep.org; Mon, 10 Oct 2011 08:32:24 +0100 Received: from mail-iy0-f171.google.com ([209.85.210.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RDALV-0006kB-DB for rsgb_lf_group@blacksheep.org; Mon, 10 Oct 2011 08:32:24 +0100 Received: by iaqq3 with SMTP id q3so10855974iaq.16 for ; Mon, 10 Oct 2011 00:32:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=fBiKUSRwKrX5tXLVT7sUIRGVf/N0ZbEnHCvEe9BSSn4=; b=ni197zP/gO8QGxC+XwUru76OA+HSlJgo2IUz0/RZ+g3xsqsbf5N2Abyck2dTQvRT0F eOd2lPYGGkGXOadYj6Ju0I8T2ewKMyO6V3aGIx0gPp0jL9WExnQCCmKo+EZ9VsAlPYzj qbxL80G0YDK2xBxlrTI/Tb/9Cz2A1Cw0gjgfw= MIME-Version: 1.0 Received: by 10.231.50.201 with SMTP id a9mr7987785ibg.1.1318231934141; Mon, 10 Oct 2011 00:32:14 -0700 (PDT) Received: by 10.231.207.78 with HTTP; Mon, 10 Oct 2011 00:32:14 -0700 (PDT) In-Reply-To: <4E92806A.5020106@telia.com> References: <4E9083DB.5090603@iup.uni-heidelberg.de> <4E909FCE.7060302@telus.net> <4E90A3F1.8080004@iup.uni-heidelberg.de> <4E92806A.5020106@telia.com> Date: Mon, 10 Oct 2011 08:32:14 +0100 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: Laser link... Content-Type: multipart/alternative; boundary=0015177403622a877b04aeecca58 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-SCOLL-SCORE: 0:2:503913952:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d016.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d60494e929fb5222b X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --0015177403622a877b04aeecca58 Content-Type: text/plain; charset=ISO-8859-1 And there is http://www.g4jnt.com/OpticalComms/OpticalComms.htm Andy 'jnt On 10 October 2011 06:19, Johan H. Bodin wrote: > 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 > > > --0015177403622a877b04aeecca58 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
=A0
Andy
'jnt
=A0


=A0
On 10 October 2011 06:19, Johan H. Bodin <jh.bodin@telia.com= > wrote:
Hi Stefan,

Clint Turner <= a href=3D"http://ka7oei.com/" target=3D"_blank">http://ka7oei.com/ has = interesting information on his "optical
communications page" http://modulatedlight.org/optical_c= omms/optical_index.html.
Linear's design note DN399 about photod= iode amplifiers may also be worth reading
http://cds.linear.com/docs/Design%20Note/dn399f.pdf (it uses a B= F862 FET which I
think is already one of your favourites).

Oops..= . 650nm wavelength is perhaps O.T. on this reflector.

73
Johan SM6LKM



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