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I mean who can stop you from transmitting anything you want at any frequency? Licenses etc only matter when the rule of law is a thing.
by whatever1 9mo ago
I mean who can stop you from transmitting anything you want at any frequency? Licenses etc only matter when the rule of law is a thing.
- a012 9mo agoOnce you transmitted, you’re exposed so the authority can find you sooner or later
- wolvoleo 9mo agoWell yes but you could of course choose not to stay at the location you transmit from.
- nerdsniper 9mo agoIt'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.
- markus_zhang 9mo agoJust curious what if the transmitter hops freq around? What is the tech to track these?
- heljara 9mo agoIt'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/ https://www.he360.com/ 2. https://spire.com/space-reconnaissance https://spire.com/space-reconnaissance
- markus_zhang 9mo agoThanks! 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?
- nerdsniper 9mo agoMilitary 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.
- deepsun 9mo agoParent was asking about jamming protection (frequency-hopping, encryption) devices.