jsjohnst

53 ms·

661.
by jsjohnst 5y ago
> "Move fast and break things" doesn't work well with aircraft. Sure, but that didn’t seem to stop faulty lithium batteries on the 787 or MCAS on the 737-MAX. If only Boeing would learn the lesson, maybe we wouldn’t have t
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by jsjohnst 5y ago
Agree!
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by jsjohnst 5y ago
The differences, while minimal, do make a big difference in certain environments. Long cable lengths (>70m) is the obvious one that might apply in a home environment theoretically. The more common case where it makes a difference is in v
664.
by jsjohnst 5y ago
Mentioned in the article. It’s based on the article author’s work.
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by jsjohnst 5y ago
My home is a mix of topologies, but everything that is twisted pair copper that was pre-existing is Cat5e and has no trouble fully saturating 10gbps (30-40ft average loop length). I have cheap RG6 handling 2.5Gbps where I didn’t have an exi
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by jsjohnst 5y ago
> Cat5 and cat5e are different though. Yes, for sure. 99% of the time, based on personal experience, the person either doesn’t realize the difference or is just incorrectly using the term Cat5 to mean Cat5e. It’s pretty rare you’ll find
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by jsjohnst 5y ago
> You also want something better than cat5 for home wiring. For 25Gbps? Or are you meaning for the 1gbps you have? If the former, of course, but otherwise Cat5e can handle 10GbE if you have good connections and the loop length isn’t too
668.
by jsjohnst 5y ago
My point was it’s hyperbolic. You’d have to be going so close[0] to C that it’d be impossible. [0] about 0.99999c if what someone else in this thread said is correct
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by jsjohnst 5y ago
I’m aware of time dilation, my point was that a “week vacation” to something “over 4 light years” away is just hyperbolic.
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by jsjohnst 5y ago
> a trip to the next star can be a week-long affair from your point of view You’d need to travel at around 233x the speed of light to make getting to the nearest star be a week trip, no?
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by jsjohnst 5y ago
> we are giving you a 500 USD Apple credit and extending the time you can use it to get a new M1 Mac through the end of the year So we are in agreement it was $500 that Apple ultimately offered? Great. Glad we cleared that up and what
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by jsjohnst 5y ago
I just checked my emails and it was always $500 credit offered after returning for me, so maybe some DTK folks were offered $200? Either way, it ultimately was $500 however by your own admission, even if initially stated to some as $200.
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by jsjohnst 5y ago
> The "monetize everything to the max" policy of encouraging developers to test their new pre-release M1 chip + OS and software for $500 and then after they return their DTK they offered a $200 store credit. Ignoring the fact y
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by jsjohnst 5y ago
Nevada Highway 50 is one place you could.
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by jsjohnst 5y ago
If I spent 10hrs a day for 365 days in a row I wouldn’t get through my backlog (easily way over 500k photos), but that’s not really the point. I don’t need to process and post every photo I take, many are either just for me or alternate tak
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by jsjohnst 5y ago
> They are telling the government they will pay out if the insured party is at fault for an accident A police report doesn’t establish proof of fault. Neither does a video. Neither does eye witnesses. All of those are evidence of fault
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by jsjohnst 5y ago
> do they need line-of-sight. Yes, they do. > And how much it adds to latency since signals received and sent have to go through networking equipment within each satellite. Negligible vs the impact “speed of light” (aka distance) alre
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by jsjohnst 5y ago
> The refractive index of air is very close to that of vacuum Yeah, 1.0003 vs 1.0. Very close, but not the same was my point.
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by jsjohnst 5y ago
> From what I understand Starlink satellites do not communicate between each other yet, maybe that's outdated info. It’s always been wrong. By design the Starlink satellites communicated with each other. Too cost prohibitive and inf
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by jsjohnst 5y ago
Fiber gets closer to the speed of light, even when accounting for retransmission delays, than just 50%. The index of refraction for glass is commonly quoted as 1.5. That makes it 33%. Also, Starlink isn’t vacuum speeds either (unless you ar
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by jsjohnst 5y ago
Only if it’s a lease, if you have a standard loan YOU are the titled owner and the bank is a lien holder on the title.
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by jsjohnst 5y ago
That isn’t correct. The car is titled to you, the bank is added as a lien holder in a separate part of the title. Happy to show proof if desired.
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Bad things come in threes: Apache reveals another Log4j bug(theregister.com)
4 points by jsjohnst 5y ago|0 comments
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by jsjohnst 5y ago
> More realistically, this code is 20 years old Actually, it’s not. Log4j 2 is a ground up rewrite of Log4j and is less than 9 years old from when the rewrite started, 7 years for the GA release. Log4j 1.x isn’t vulnerable as it doesn’t
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by jsjohnst 5y ago
> Is this convenience worth sending unencrypted backups of your data to Apple? iCloud Backups are not "unencrypted backups" https://support.apple.com/en-us/HT202303 I do wish they would bump the backups to
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by jsjohnst 5y ago
12 core Xeon Mac Pro @ 3.33ghz w/ 128gb RAM and PCIe SSD. Yep, it’s “miserable”. ;) That said, I’ve upgraded the video cards and applied an EFI “fix”, so it runs later releases with full FV2 boot support (hence the EFI “fix”).
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by jsjohnst 5y ago
> I can't send a picture from Android to iPad OS when I don't have internet: iPad can't receive images over Bluetooth. There’s an app for that ;) > I can't send videos from my Windows10 to the iPad with a simple US
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by jsjohnst 5y ago
Do you happen to have a link for the "XRTX-CS". The only seemingly relevant link in Google leads to your HN post :) Edit: Seems you mean XTRX-CS[0]? [0] https://www.crowdsupply.com/fairwaves/xtrx
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by jsjohnst 5y ago
You definitely don’t need 160Mhz bandwidth. Based on other articles on the source blog, it’s something he had and the additional bandwidth let’s you track more spectrum at once.
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by jsjohnst 5y ago
This guy chained 8 HackRF SDRs together with a bunch of other radio gear to see the beacons (radio impulses) from Starlink satellites.

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