Ask HN: Iran's 120h internet shutdown,Phones back. How to stay resilient?

Re:Ask HN: Iran's 120h internet shutdown,Phones back. How to... by nerdsniper on Wednesday January 14, 2026 @02:19AM (#46613293)

It's trivially easy to watch the entire radio frequency range at once and triangulate the location of any transmission. If someone more powerful than you wants to stop you, they can.

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Re:Ask HN: Iran's 120h internet shutdown,Phones back. How to... by markus_zhang on Wednesday January 14, 2026 @06:33AM (#46614869)

Just curious what if the transmitter hops freq around? What is the tech to track these?

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Re:Ask HN: Iran's 120h internet shutdown,Phones back. How to... by heljara on Wednesday January 14, 2026 @08:17AM (#46615704)

It's (scarily) available in the commercial sector[1][2] from space if you have the need to purchase their services.

Suffice to say, military and intelligence agencies are probably a few generations ahead of this and you won't find them commenting on strategic capabilities on HN.

1. https://www.he360.com/ 2. https://spire.com/space-reconnaissance

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Re:Ask HN: Iran's 120h internet shutdown,Phones back. How to... by markus_zhang on Wednesday January 14, 2026 @11:05AM (#46617716)

Thanks! Technically, what do you think is the biggest obstacle to achieve military grade hopping? Is it just cost, or something you simply cannot buy from open market AND cannot make one if you have the knowledge?

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Re:Ask HN: Iran's 120h internet shutdown,Phones back. How to... by nerdsniper on Wednesday January 14, 2026 @02:44PM (#46621760)

Military frequency hopping / spread spectrum isn’t really about preventing being noticed, it’s more about making it harder to jam. If you don’t have physical safety from the people “more powerful” than you who want to stop you, then they will still locate you easily and stop you using physical force.

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