Transcription
Band 53 is Global Star's biggest asset. The emergency SOS via satellite feature on your phone. It's 11.5 megahertz of spectrum in the 2.4 GHz band, right above channel 12 for Wi-Fi, which Global Star uses to provide service to Apple. And now that's why Amazon bought Global Star. So only Amazon will be allowed to use that spectrum with what are now their satellites.
But why is band 53 so important to Amazon? So, Wi-Fi goes channels 1 through 12. And then the next band up is the Global Star band, which is used by the iPhones to communicate with the satellite.
Is my iPhone still going to be able to SOS text?
Band 53 is a direct to device band. The satellites are talking straight to your phone. They're acting like the cell phone tower. Now, it's only one band and it's only 11.5 MHz. So, it's set up as time division multiplexing, TDD, which means the satellites are telling each phone when it's their turn to transmit, so they don't stomp on each other.
Now, normally this can make things really efficient, but in the case of satellites, it's tricky. Satellites prefer to not use TDD because everyone's clocks have to be synchronized. Obviously, Amazon wants to keep Apple as a customer. They're not going to cut off all these iPhones. They want that business. So, they're going to build on that and they're going to combine it with Amazon Leo. They're trying to put together real competition against Starlink, a real constellation of enough satellites to provide real services to all of us. And I'm excited about that. I want to use Speedify and put together my Starlinks. I've got two already with Leo. Let's have a super reliable system that uses multiple constellations at the same time.
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