Birdwatch Note Rating
2023-06-21 20:21:10 UTC - HELPFUL
Rated by Participant: EC604BAA26A66D3ED1F31DFD2FCA8B08B8995734D122E360C4E93DB9F1B9D4E0
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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