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KZerda

342 karma · joined September 7, 2021

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KZerda··on FAA Fumbled Its Response to a Surge in GPS Jamming
There are other accurate systems for navigation available for aircraft, like the network of Non-Directional Beacons (https://en.wikipedia.org/wiki/Non-directional_beacon). It's a bit more of a pain in the butt to fly, because you're going from waypoint-to-waypoint, rather than a course relatively towards your destination, but it was how we did aircraft navigation up until relatively recently.
KZerda··on Fosscord is a free open-source discord compatible chat, voice and video platform
There are a number of services that provide speech-to-text services. Being able to hook a voice chat feed into one of them for live transcripting would be pretty game changing for conferences in general.
KZerda··on FCC plans to rein in “gateway” carriers that bring foreign robocalls to US
I started answering scam calls. And pressing 1 when it said so to speak with someone about my microsoft account, apple account, car warranty, etc. And telling the person on the other end to kindly fuck off. After a few rounds of this, the calls stopped calling, as I'd gotten on enough of the spammer blacklists of someone who will waste their time. It took a while to build up the courage to do so, but I'm glad I did, because when the phone rings now, I can be reasonably assured that it's someone who I actually want to talk to.
KZerda··on Update about the October 4th outage
There were rumors early in the downtime that it was the responsibility of various outside groups. Saying, "no, your data was not impacted" is pretty standard in light of those rumors, even if they weren't the main ones spreading around after the initial reports.
KZerda··on Ask HN: Can carmakers chips be emulated by more available ARM microcontrollers?
Not really, no. A lot of the problem is that automotive circuitry is a real messy place, so you need a lot of high tolerances to things like voltage spikes, background noise, temperature, etc. You also have to consider that most chips have different pinouts, with different on-chip components, usually with some analog components, so would need to find one that is compatible, or spend time and money developing, documenting, and certifying, a board revision, test to make sure that it is a drop-in replacement for things like warranty repairs. All of this takes a lot of time and a lot of money to do.
KZerda··on Why Carmakers Can’t Transition to Newer Chips
Okay, so you've designed it. Now, make sure it works with the dirty electrical signal of a typical car's power bus. Then make sure it fits in the space requirements of under the car's hood, or in the door, or any of the other tight places that these embedded systems go. Then make sure that it's verified to act over several years of vehicle life. Then, make sure your suppliers will guarantee you that they won't discontinue the part for at least 10-15 years because of legal requirements for spare parts. Just throwing discrete logic at the problem doesn't always help.
KZerda··on 3D Printing – High Security Key
Depends on your need. For a key you'll only need/want to use one or two times, plastic will be able to hold up just fine. If you need something more durable, there are a number of 3d printing services that'll print whatever you want in metal without any questions asked. Desktop sintering printers are also getting cheaper and cheaper. They're still several thousand dollars, but that price will only come down now that patents are expiring and people are starting to be able to work on the processes to get them more resonable in cost.
KZerda··on Volvo to stop using leather in new cars by 2030
In addition to the design aspects, there's also supply chain aspects to worry about. Volvo could have long-term contracts with leather makers for x amount per year of leather for y number of years. Eliminating leather while contracts are still running mean that you'll be wasting leather or desperately trying to find a buyer until that contract runs out.
KZerda··on Lunar Crater Radio Telescope on the Far-Side of the Moon (2020)
Depends on the radio frequencies used. This dish is designed to look at relatively low frequencies -- 6mhz to 30mhz. So I imagine that any potential new far-moon missions would probably just avoid those frequencies. These frequencies wouldn't be as useful as they are on earth anyways, because there's relatively low bandwidth, and there's no useful ionosphere to bounce signals are for long-range propogation like there is on earth.

Edit:

However, on the other hand, there could potentially be a lot of unintended low-frequency broadcasters -- microchips, etc. So I imagine there would still be a need for hold-out zones, but they'd probably not be as impactful as there are on earth.

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