Connectivity of a Broadcast Station Network.
An analysis demonstrating, by means of a realistic model, that a technical capability already exists for using redundancy to form an emergency command-control backup radio network. The system examined consists of existing relatively low-power radio broadcast stations. A network that might be expected to survive an attack on the U.S. ZI was laid out, a computer program was developed to evaluate the signal-to-noise ratio along each path, and the network was observed for its connectivity under various conditions. The study concentrates on network organization or utility, and therefore avoids discussion of terminal points. The results suggest that a system consisting of six to ten teletype channels or one single-sideband voice channel would be feasible even under the worst noise conditions expected: however, only the teletype is available without extensive modification of existing stations