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I thought that "modem's satellite feature" is usually the Apple-like emergency SOS which requires special hardware to literally contact a satellite. This is no

I thought that "modem's satellite feature" is usually the Apple-like emergency SOS which requires special hardware to literally contact a satellite. This is not that, this is seemingly LTE via satellite. I assume via some beamforming higher power signals, but I could be very wrong. Edit: From SpaceX [1] In addition to expanding mobile coverage, Direct to Cell will enable ubiquitous Internet of Things (IoT) connectivity outside of terrestrial coverage, connecting millions of devices across critical global industries. • No specialized or additional hardware required • Compatible with off-the-shelf CAT-1, CAT-1 Bis, and CAT-4 modems* • Plans available via our global partners in approved countries starting in 2025 [1] https://www.starlink.com/business/direct-to-cell https://www.starlink.com/business/direct-to-cell

wongarsu 2y ago
It's not as crazy as it first sounds. In the lower frequency bands assigned to LTE and 5G (600/700/850MHz) that are meant for rural base stations are essentially limited by line of sight when talking about traditional base stations. A 100m/300ft radio tower can see about 40km, just one order of magnitude less than the distance to a Starlink satellite. We know phones can reach base stations at least twice as far away as our theoretical 100m tower because of quotes about the ranges of base stations on mountains. The rest they likely make up with better beam forming and relative lack of reflections when communicating with a satellite overhead
- ant6n 2y ago
  Also, the effects of atmosphere reduce after the first 20km or so.