ABC News: Radar screens at Newark airport went black again overnight

[TexLaProgressive]

9. If so I suppose the upgrade would be fiber optic cable.

That comes with its own complications. There's a need for fiber terminals at both ends. Hopefully the upgrade will at least be duplex, 2 terminals at each end and 2 cable routes.

This is what I thought about the 780 Max, relying on a single stall sensor.

I think that they were using T3/DS3 transport the radar data over a cable with multiple 75 ohm coax. Depending on the length there would need to be repeaters to keep the signal up. The DC riding to power the repeaters may have caused the problem by burning the wire(s).

This can also be an issue with FO. DC is carried on dedicated metallic wires to power repeater. Duplex systems are expensive but really needed on critical systems.

We have a class 5 fiber optic hub in our town. The power from the grid come from 2 parts of the network, they have 3 1.5 mega megawatt generators that can each run the site alone. They are fueled by a tank like carried by large tank trucks. All the equipment is duplex meaning 2 systems operating together with one active with the other able take over without a pause if the active side fails.