At 02:05 PM 5/13/2005, Peter wrote:


>On Fri, 13 May 2005, vasile surducan wrote:
>
>>You need a laser protected perimeter, and if it's only for caws, then
>>maybe will be to expensive, it require acumulators, radios and laser
>>beams.
>
>And nice weather. What's wrong with microwave again ?


Rain, wind, Snow, Ice, changes in humidity in the air blowing across, 
thermal layers in the air...
And microwave interference.

I used to do that sort of thing for a living.


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