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Definitely powered, I' ve already replaced mine -dead and no, they didn't let
me keep it for dissection (sad face)
D
At 07:49 PM 10/23/03 -0500, michael brown wrote:
>Josh Koffman wrote:
> > There definately is such a thing. I don't know anything about it, but
> > look for information on how the automatic transponders for toll roads
> > work. My guess is a higher power energizing beam, and a directional
> > antenna.
>
>The ones here houston use a battery powered transmitter that responds to
>the toll booth signal.
snip

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