Birdwatch Archive

Birdwatch Note Rating

2023-06-21 22:22:54 UTC - HELPFUL

Rated by Participant: 3D1D3178E63F61CF3B72F7D01A8F5CE370A668961AD6A1059B0C71B23374F2A8
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

Original Tweet

All Information

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