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Emergency Messaging And AM

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October 3rd 05, 04:46 PM

Ari Silversteinn

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On 2 Oct 2005 18:36:56 -0700, wrote:

I agree Bob. "Tunnel Radio" systems have been around for over 20
years, and AFAIK all broadcast on dual IF frequencies covering both am
and fm car radios. Here in Boston this type of system is in use in all
our tunnels.

Harry C.

Harry, is this a "pickup" system for lost signal?
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