Satellite uplink/downlink. For establishing communications after an event that damages microwave/fiber/towers/etc.
The microwave system is much more robust than it was years ago but imagine an ice storm like the one that hit Canada and northern New England 20 years ago. Some places had over 5" of freezing rain. 1000 electrical transmission towers, 30,000 telephone poles, 75,000 miles of wires and millions of trees knocked down in Canada, in an area bigger but much less populated than Southern New England. Satellite and shortwave would be it for quite a while.
chris
The microwave system is much more robust than it was years ago but imagine an ice storm like the one that hit Canada and northern New England 20 years ago. Some places had over 5" of freezing rain. 1000 electrical transmission towers, 30,000 telephone poles, 75,000 miles of wires and millions of trees knocked down in Canada, in an area bigger but much less populated than Southern New England. Satellite and shortwave would be it for quite a while.
chris