GPS has made a major impact on our world. How is it a free service that anyone with a phone can access? How is it profitable for companies to offer services like navigation without subscription fees or ads?
In: Technology
my question is how you gonna charge a subscription when GPS sats are just clocks pingin out RF times 24/7?
this is a really cool old video of what equipment was originally used to get GPS coordinates. and also to see how long it used to take.
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