From: John Tserkezis 
Reply-To: Fidonet AVtech Echo 

Bob Lawrence wrote:

> JT> Is RF a suitable alternative? Some UHF car alarm keys go for
> JT> that sort of distance easily. Not directional and quite low
> JT> power consumption. 
> 
>  UHF is the obvious answer. But then it wouln't be infrared. 

  Why is infrared _required_?  I've never seen any infrared outdoor remotes, 
simply because of the SNR problems.

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