Apparently there are two options: An existing Internet connection, or actually receivers transmitting back to the broadcast tower – which sounds crazy, but the specification [1] says it can work over up to 100 kilometers with line-of-sight...?
Then again, thanks to modern modulation techniques, digital steering etc., battery-powered smartphones can talk to satellites 36 thousand kilometers away these days as well, so maybe this is just a thing now? The spec also does mention receive repeaters for complicated non-line-of-sight propagation scenarios.
Then again, thanks to modern modulation techniques, digital steering etc., battery-powered smartphones can talk to satellites 36 thousand kilometers away these days as well, so maybe this is just a thing now? The spec also does mention receive repeaters for complicated non-line-of-sight propagation scenarios.
[1] https://www.atsc.org/wp-content/uploads/2024/04/A323-2024-04...