3 ms·
The bandwidth will be small. I saw 2-5 Mbps for the whole cell covering a city. Devices will be limited to messages, small amounts of data, and voice.
by ianburrell 2y ago
The bandwidth will be small. I saw 2-5 Mbps for the whole cell covering a city. Devices will be limited to messages, small amounts of data, and voice.
- comboy 2y agoBut it's still a mobile phone transmission power (1W?) and then r^2. Distinguishing that from noise seems mind-boggling.
- dzhiurgis 2y agoReally just makes one think what sort of capability military has.
- JaimeThompson 2y agoCheck out the Orion series of Sigint birds[1] " The satellites have estimated mass close to 5,200 kg and very large (estimated 100 m diameter) radio reflecting dishes." [1] https://en.wikipedia.org/wiki/Orion_(satellite) https://en.wikipedia.org/wiki/Orion_(satellite)
- stavros 2y agoThat's still the difference between lost in the mountains and "my coordinates are X, Y".
- RoddaWallPro 2y agoBut just to clarify, because I'm also having a hard time imagining this, an LTE antenna in a cell phone can beam data to a satellite and have it picked up? Even at whatever low kbps? That is insane to me!
- wmf 2y agoYes. It's been demonstrated a few times.