[MLB-WIRELESS] Optical Data Link

[Clae]

At 3:08 PM +1000 7/9/2004, Richard wrote:
>What do these things use then? IR LEDs or something?
>I think they would be susceptible to some interference from the Sun 
>and heavy rain/fog, so not completely noise free, but at least you 
>don't have to share with phones and microwaves. :)
>
>You might be able to convince someone like Jaycar to set the kits 
>up, especially considering they're completely open source designs.

Yeah or Oatley Electronics in Sydney.
http://www.oatleyelectronics.com

>>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

It might be possible to split the signal optically (one LED with beam 
splitters or mirrors) or electrically (ie two LEDs).  The first would 
cut down your range by half I'd assume.

>>I'd be interested to see if there are ways to legally increase the range

Is there *any* legal restriction on the visible spectrum?

Clae.

-- 
"I've often performed and recorded with this instrument and its sound 
is excellent.
Very occasionally it explodes during a performance, but the audience 
assumes that
it is part of the act." - Linsey Pollack - 
http://www.amcoz.com.au/pdfs/jnl6203.pdf
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