[Scan-DC] White Paper: Wireless Positive Train Control 2012 Update

[Blair Thompson]

Interesting paper. Hardware, frequencies, etc. All railfans with scanners ought to give it a once-over. Maybe some others too.

http://www.sti-co.com/wp-content/uploads/2012/07/PTC-White-Paper-for-Web-Site-Rev-July-5-2012-by-APK.pdf
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