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Joined 1 year ago
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Cake day: July 4th, 2023

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  • These complaints sound legitimate.

    AT&T said SpaceX’s requested “ninefold increase” to the allowable power flux-density limits for out-of-band emissions “would cause unacceptable harmful interference to incumbent terrestrial mobile operations. Specifically, AT&T’s technical analysis shows that SpaceX’s proposal would cause an 18% average reduction in network downlink throughput in an operational and representative AT&T PCS C Block market deployment.”

    Assuming a handset antenna gain of -3 dBi, SpaceX’s proposal still results in an interference to noise (I/N) ratio of -3 dB—well above the ITU [International Telecommunication Union] threshold SpaceX claims would protect terrestrial devices. SpaceX’s proposed margin therefore fails to adequately protect terrestrial user equipment from potential interference from SCS satellite systems, including user equipment that may not fall within the flagship performance parameters, and should be rejected.”







  • Using commercial off the shelf technology without proper testing and certification is absolutely cutting corners. See: Kaprun disaster.

    What kind of fire rating did those COTS parts throughout the interior of the vessel have? What kind of redundancy existed? Would you use a Logitech controller for a spacecraft? The requirements of deep sea submersibles and spacecraft are quite similar. Would any of the submersible certification agencies approved this? I think not.

    I see the Logitech controller, the carbon fiber hull, and so many other decisions he made as symptoms of the same corner cutting, “move fast and break things” mentality he had.