Birdwatch Note Rating
2023-06-21 18:02:57 UTC - HELPFUL
Rated by Participant: 5D459975FDA94C98B993C8D501224AC9C86EDDC0A73B23C0992316133C9BD659
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.
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