Birdwatch Archive

Birdwatch Note Rating

2023-06-21 22:18:22 UTC - HELPFUL

Rated by Participant: 04243FCEE3704BBA1846E5009F2BA03EE36A98C381FDA424FCB38AB8C1B242BE
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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  • version - 2
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  • helpfulnessLevel - HELPFUL
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  • ratingsId - 167162465239606067304243FCEE3704BBA1846E5009F2BA03EE36A98C381FDA424FCB38AB8C1B242BE