Birdwatch Note Rating
2023-06-21 22:53:35 UTC - NOT_HELPFUL
Rated by Participant: 792D2734E3A287429A82CC65BACBDA2A63504507F6C8385C87F94F4D14A7A056
Participant Details
Original Note:
Starlink operates in the 10.7 to 12.7 GHz band. https://radionavlab.ae.utexas.edu/wp-content/uploads/2023/01/starlink_structure.pdf Penetration depth of 2.45GHz in water is <8cm and falls off with increasing frequency. https://cober.com/wp-content/uploads/2018/06/Microwave-Technology-Cober-website-v08-23-17.pdf Therefore, Starlink cannot be used to communicate with an underwater submarine, and it was not "unknown" whether the sub itself used it.
All Note Details