Birdwatch Note Rating
2023-06-21 15:06:40 UTC - HELPFUL
Rated by Participant: 98A82B1D684A7D782EE9389C8962707B91CDCD0490270C385DB0666F5F41BECE
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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