Birdwatch Note Rating
2023-06-21 22:05:01 UTC - HELPFUL
Rated by Participant: 36910B0951CE6F8F171F36E47AF454678A656EA231EA281445762BADB7F62ACE
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.
All Note Details