LED voice transmission over 104 miles

[Mike O'Dell]

companion to the standard "laser hazard" sign
on the door of a laser lab in Amsterdam:

	"Do not look into beam with remaining eye!"

	-mo


Andre Kesteloot wrote:
> 
> 
> LED voice transmission over 104 miles:
> These Tasmanian hams transmitted voice over 104 miles between mountain 
> peaks using  Luxeon LED-powered transmitters. The circuits and pictures 
> of the rigs are described.
> 
> Check out the old school handset being used.
> 
> Of course they were dismayed that U.S. Army heliograph operators managed 
> 183 miles more than 100 years ago (Morse code).
> 
> Now that's old school!
> http://www.makezine.com/blog/archive/2006/07/led_voice_transmission_over_10.html 
>   (from one of our Correspondents)
> 
> 
> André N4ICK
> 
> 
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