[MLB-WIRELESS] Optical Data Link

[Dan Flett]

Yeah, I like it a lot.  Doing a currency conversion from Czech Korunas
to Austalian Dollars shows that one of these units could be built for
between $90 - $140.

Features:
* Point-to-point - almost impossible to eavesdrop upon (without major
effort on the part of the eavesdropper)
* No licence required - no frikken' lasers!
* Interesting project - a different and still affordable approach to
wireless networking.

Compared to 802.11b:
Advantages
* Not 2.4GHz - not susceptible to interference from users using the same
gear/spectrum, no hidden node hassles.
* True 10Mbit/s full-duplex speed
* Fairly cheap
* Easy to build for someone with basic electronics skills

Disadvantages
* Fairly short range (1.4km)
* Time consuming to build, not available pre-built or even in kit form
yet.
* Not capable of point-to-multipoint operation
* Strictly line-of-sight

I'd be interested to see if there are ways to legally increase the range
of these babies.  Then they'd be a real viable option for backhaul links
on a network such as ours.

Dan

> -----Original Message-----
> From: owner-melbwireless at wireless.org.au [mailto:owner-
> melbwireless at wireless.org.au] On Behalf Of Matt Pearce
> Sent: Sunday, 5 September 2004 19:10
> To: melbwireless at wireless.org.au
> Subject: Re: [MLB-WIRELESS] Optical Data Link
> 
> Very interesting, having a look through now and it looks like it could
> be a lot of fun to build, although i'll have to get someone to make
the
> PCB's for me as its been years since i've done PCB's and I got rid of
my
> acid etc.
> 
> Matt.
> 
> Soragan Guo wrote:
> 
> > http://ronja.twibright.com
> >
> > interesting optical datalink project
> > 10mbps fullduplex 1.4km
> >
> >
> 
> 
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