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The US still has a fairly robust network of VOR's / VOR with DME / VORTAC stations. Good for navigation, but there's no timing component, beyond what's inherent in how they operate.

Admittedly, that'll never be of use outside aviation as its line-of-sight only. But if the sun threw a Carrington event (or worse) at us, I think a lot of western aviation could carry on.

by throw0101c6 hours ago|

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> The US still has a fairly robust network of VOR's / VOR with DME / VORTAC stations. Good for navigation, but there's no timing component, beyond what's inherent in how they operate. Admittedly, that'll never be of use outside aviation […]

I'm aware of the FAA's MON, Minimum Operating Network.

Exactly: that doesn't help boats. Or people in cars. Or farmers:

* https://www.deere.com/en/technology-products/precision-ag-te...

It doesn't help those that use GNSS for precise timing (TCXOes can only 'free run' for a finite amount of time before drift compounds 'too much').

by ifwinterco1 hours ago|

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A lot of these were getting dismantled until quite recently, but given recent developments they should obviously be kept

by throw0101c31 minutes ago|

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> A lot of these were getting dismantled until quite recently, but given recent developments they should obviously be kept

The FAA has always planned for keeping a non-GNSS-based infrastructure:

* https://www.faa.gov/air_traffic/flight_info/aeronav/acf/medi...

* https://www.federalregister.gov/documents/2012/08/21/2012-20...

* https://download.aopa.org/epilot/2012/120112VOR-MON-White-Pa...

* https://flighttrainingcentral.com/2017/03/legacy-navigation-...

by bananaowl3 hours ago|

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Iridium has launched its own alternative positioning and timing system now https://www.iridium.com/iridium-pnt