Birdwatch Archive

Birdwatch Note Rating

2023-06-22 03:02:29 UTC - HELPFUL

Rated by Participant: 0BD47C7568154F38C2A90F1A2A9A7573F52415E24DBE18110B4B5641400EE005
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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