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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.






  • Lithium ion cells do not have high self discharge rates nor do they suffer from the memory effect. I’ve left 18650s charged for years and they work fine, ditto for 14500 (AA sized lithium ion). Sure, they lose some charge, but there’s still plenty of capacity even after sitting for a long time. Can’t say I’ve ever been disappointed with the various flavors of lithium cells, but NiMH was pretty bad until Eneloops came around. Alkaline is still my go to for remotes.

    You’re also not going to encounter many situations where alkaline (1.5v)/NiMH (1.3v) can be swapped with lithium ion (4.2v). Certain flashlights are the only things I’ve got where you can swap 1.5v and 4.2v and that’s because they’ve got the circuitry to handle that.




  • I use Signal as well and that’s what came to mind. Let’s assume I cheated on my wife and hired prostitutes using Signal on my phone. She could use my Windows PC, open Signal there, then see the cheater texts. This isn’t the fault of Signal, Apple, or Microsoft. It did the thing I asked it to do - sync messages. I would have fucked up by letting someone use my Windows login.

    Good thing we don’t share accounts, aside from some very short term usage. That’s just a bad idea, even if it’s little personalization type things. Not messaging hookers probably goes a long way too.