[Laser] Strobe light communication

Sun Feb 6 19:45:48 EST 2005

Hello all:

I found a nice website doing almost the same thing but I think really
much better in my opinion see the link below:

http://www.opencollector.org/collector.php

and click on:

http://ronja.twibright.com/

You should see the laser spit out 10Mbps on a 1.4KM link!

Man, I'm building this hardware!

Berns B.

-----Original Message-----
From: laser-bounces at mailman.qth.net
[mailto:laser-bounces at mailman.qth.net] On Behalf Of smattila
Sent: Saturday, February 05, 2005 2:37 AM
To: laser at mailman.qth.net
Cc: smattila at ieee.org
Subject: [Laser] Strobe light communication

Tims's idea looks good. I played with
flash tubes, like the ones used in
stobes years ago. It is quite easy
to increase the pulse rate by putting
a smaller capacitor and more powerful,
stable power supply. However, when the
pulse energy goes below a certain limit,
the plasma discharge does no more fill
the whole tube, but becomes thing stream
like miniature lightning bolt.

Sakari Mattila, LPO Box 5080,
Canberra University, Bruce ACT 2617,
Australia  (tel. +61 408 533474 SMS)
>>>>>> smattila at ieee.org
http://www.canberra.edu.au/~sam

---
Part of the original message:

Date: Fri, 4 Feb 2005 20:15:38 -0800 (PST)
From: Tim Toast <toasty256 at yahoo.com>
Subject: [Laser] Strobe Light PSK and other modes
To: laser mailinglist <laser at mailman.qth.net>
Cc: toaster98 at hotmail.com
Message-ID: <20050205041538.59750.qmail at web30202.mail.mud.yahoo.com>
Content-Type: text/plain; charset=us-ascii

Here's an idea I had about using strobe lights 
to communicate. It's probably not completely new 
since these things have been around so long. I 
know several on the list have mentioned using 
PSK via laser over the last year and how it lends 
itself well to square waves.

(CUT)

=====
Tim Toast
http://www.aladal.net/toast/
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