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Re: LF: Laser link...

from [Stefan Schäfer] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: Laser link...
From: Stefan Schäfer <[email protected]>
Date: Mon, 10 Oct 2011 12:36:21 +0200
In-reply-to: <CAA8k23TSM69Dd_vEm5=r_0v-OC5=3P_d4tGe2WD81htesyEyOQ@mail.gmail.com>
References: <[email protected]> <[email protected]> <[email protected]> <[email protected]> <CAA8k23TSM69Dd_vEm5=r_0v-OC5=3P_d4tGe2WD81htesyEyOQ@mail.gmail.com>
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Andy, Johan, Wolf, Scott, Dex, all,

Thanks for the useful links and suggestions. I'm looking forward to some tests and really would like to set up a link to a RX antenna for 137 in the forest!. Will try the 74HC4046 + a laser diode. In 2001 i already did some experiments on that and have a laser diode parallel fixed on a sighting telescope.

73, Stefan/DK7FC

Am 10.10.2011 09:32, schrieb Andy Talbot:
 
Andy
'jnt
 


 
On 10 October 2011 06:19, Johan H. Bodin <[email protected]> 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



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