7 ms·
The signal goes through the ionosphere to the satellite than to another satellite which has a link to the Earth. Starlink uses LEO, so there is 2400 km link(120
by vasilia 6y ago
The signal goes through the ionosphere to the satellite than to another satellite which has a link to the Earth. Starlink uses LEO, so there is 2400 km link(1200 km from/to the ground). 1 ms is time for the signal to travel for 300 km in a vacuum. So theoretically the lowest RTT could be about 8 ms. Right now RTT to my ISP is 2 ms.
- ericd 6y agoI think your altitude figure is off by ~2x. "The satellites successfully reached their operational altitude of 340 miles (550 kilometers)" according to this: https://www.space.com/spacex-starlink-satellites.html https://www.space.com/spacex-starlink-satellites.html
- vasilia 6y agoI found this https://www.reddit.com/r/Starlink/comments/i9w09n/list_of_confirmed_starlink_speed_tests/ https://www.reddit.com/r/Starlink/comments/i9w09n/list_of_co... It's pretty good for far remote regions like Alaska. Fibre channel will be much more costly with comparable RTT.
- ericd 6y agoNeat, thanks!