Linux gamer, retired aviator, profanity enthusiast

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Joined 2 years ago
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Cake day: June 20th, 2023

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  • How does the web interface collect the transmissions?

    The person or organization hosting the website has an antenna somewhere attached to a Software Defined Radio, or SDR. I honestly don’t know how these work at the silicon level, but radio antenna feed line goes in one side, some JFM happens, and USB and/or PCIe computer data comes out the other end. Instead of tuning into such and such frequency with such and such modulation, it sends the raw RF data to the computer to let it process it digitally, with algorithms and GFLOPS and RAM and shit.

    Which means, you get to tell it “process the data as if you’re a single-sideband radio listening on 14.070MHz Upper Sideband” and you can listen into amateur radio slow scan television. It’s basically like you get to remote control someone else’s radio receiver.

    Are all the transmissions made digitally accessible with the interface?

    No. See the above “A person has an antenna somewhere.” You can hear what that antenna hears. This will be limited to line of sight for VHF and up, and even HF will be limited by propagation conditions and the nature of the antenna. The hardware they’ve hooked to their computer may also have its own limitations. Also, their antenna is imperfect because there is no such thing. This is the world’s shittiest Wi-Fi antenna (only partially because it fell over).

    Why (other than cost) would I want to use a web interface rather than a traditional receiver?

    Not all radio transmissions can be heard from everywhere. I can’t hear anything above 12 meters out of eastern Europe from here, not in the worst solar cycle since humans learned the sun has cycles. I can hear it loud and clear from some Frenchman who put his SDR online.



  • No, only the British are dumb enough to require a license for a receiver.

    You can go buy whatever radio you want and listen to hams tell each other where they’re from and lie about how well they’re hearing each other. Which is most of what they do on shortwave. 1. Ham radio is a game to most of them, the game is “exchange callsigns with people from as many places as you can.” 2. There is a law (CFR 97.113(5)) that prohibits “Communications, on a regular basis, which could reasonably be furnished alternatively through other radio services.” I read that as it’s illegal to have a weekly Wednesday at 5 PM EDT chat with your buddy in Tuscon on 20 meters because the cell phone network can also accomplish that. So are scheduled ragchew nets legal?

    If you’re going to play around with an HF receiver, ignore the hams and listen out for numbers stations, they’re way fucking cooler than us licensed radio dorks.

    Don’t transmit without a license. If we can hear you, we can find you. Radio isn’t like the internet, radio travels in straight (ish) lines. You’re literally shining a light into the sky, we can tell where it’s coming from. Hams won’t do anything to you. No, that’s what the FCC is for.





  • Here is the way I understand it:

    Microsoft got to be as big as it is because they were the ones sitting at the table when IBM made the biggest whoopsie in all of business. They negotiated a non-exclusive license to MS-DOS for the Intel Reference Design PC they were slapping together. The only thing that was proprietary to IBM about the 5150 PC was the BIOS. Well other companies like Compaq engineered a non-infringing BIOS and were able to bring a 100% compatible competitor to the market. That, plus Intel being required to license the x86 architecture to AMD so that there could be second party suppliers if when Intel shit the bucket, made the PC a mostly open platform. Many companies made or make PCs, lots of companies publish software for Windows (or DOS before it).

    I will continue to call even modern PCs “x86”, mostly to hurt sepi’s feelings at this point.

    Apple, meanwhile, maintains a death grip on their vertically integrated empire. Only they sell the hardware, only they distribute the operating system, they either make the software in-house or vendors must work closely with them to publish software on their stores.

    Then you’ve got Linux, who showed up and used whatever hardware was available.

    Windows on x86 PCs is a closed source, open ecosystem. You can cobble the hardware together from a number of vendors, and software is usually distributed as closed source pre-compiled binaries–compiled for x86 or later, sometimes with in-line handwritten assembly. An anti-competitive streak plus the complacency that comes with being a big successful business has made Microsoft unable to realistically make a platform switch. They used the difficulty of decompiling compiled binaries as a method of copy protection for too long, and now important people NEED very old software to work on new hardware and all the loose standards are so ugly that no it’s really not plausible to make Windows for ARM without breaking a lot of legacy applications. Just in gaming. Think of how many games are out there that the publishers are either defunct or just moved on from their old games. The source code is gone or they were made in an old version of Unity that requires features that don’t work anymore so even if you have the old project files it’s difficult if not impossible to work on anymore, so how many games would Microsoft orphan if they said “Oops all ARM now?” And then it’s not just gaming, it’s all the MRI machines and city transit systems and airport systems and banks and credit cards that were built for some old version of Windows and are still in use as they were…they just…can’t abandon the x86 architecture.

    Apple is a closed source closed ecosystem. It has such a firm grip on both the hardware itself and the APIs that third party software developers may use that they can accomplish “We’re switching from Motorola PowerPC to Intel x86 now” or “We’re switching from Intel x86 to AppleSilicon ARM now.” They can make the same toolchains output to different architectures or write working translation layers like Rosetta to get those transitions made relatively seamlessly for end users. It does mean you’re locked into one hardware vendor and pretty much one software source.

    Linux is an open source, open ecosystem. The second a new architecture is added to GCC, Linux will be compiled for it. Debian Linux for RISC-V was available before there was silicon to run it on. Because most software for Linux is open source, anyone who wants to can compile it for different architectures. Most of Desktop End User Linux is de facto on x86 PCs designed for Windows is because that’s the hardware that’s widely commercially available. There is the problem that things like Wine and Proton don’t bridge the gap between architectures so people playing Windows games on Linux will have the same issue that Windows does on ARM hardware, but the open source ecosystem itself can just slide around.







  • I was just contemplating that in another thread. I had a shower thought, trying to imagine if the ancient Greek religion had survived to the present day through the industrial revolution, how their system of “god of bread, feasts and wheelbarrows” thing would have handled internal combustion engines and email. I think we’ve concluded that Hephaestus would be the god of magnetos, distributors and spark plugs and that Mercury would probably rule over SMS and email.

    CGP Grey made a video about why the Atlantic Exchange went the way it did; Europeans arrived in the Americas and steamrolled the native populations, partially with vastly superior technology and mostly with plagues. Well, people of the old world were more advanced technologically because almost all of the animals that were ripe for domestication are from Africa, Europe or Asia. It’s a lot easier to bootstrap yourself to the bronze age when you have horses, oxen, cattle, donkeys, sheep, pigs, cats, dogs and silkworms, and not so easy when maybe you have llamas. You’re not going to domesticate a moose or a bison on foot with wood and stone tools, hell we haven’t domesticated moose with helicopters and machine guns. They literally didn’t have the horsepower to climb the tech tree.

    Why did the natives die of plagues but the arriving Europeans didn’t? Plagues are animal diseases that jump to humans and then become endemic in large, dense population centers. No animal husbandry, there’s no source of viruses in the first place and no dense population centers in which to become endemic. Thus no “Americapox.”

    That’s why the Native Americans were doomed. Now what about the East? China, Japan, India, Korea, hell even the Middle East and North Africa, they had horses and cattle and such, all of them can lay claim to sophisticated cultures, they had their versions of science and philosophy…so why was the Industrial revolution peculiar to the British of all people? Portuguese and Spanish inventors patented steam powered machines before the British did, so why didn’t the Industrial Revolution belong to Portugal or Spain, let alone India or China?

    If I were to hypothesize, I think it was a Wright Flyer moment. I use the 1903 Flyer as an example of something that happened the instant it was possible and not a day before; The Flyer barely had enough power to weight that it basically couldn’t fly in density altitudes above -600 feet. It barely lifted one Ohioan a few feet above Hatteras Island in the cold of December. They didn’t have the engine in December 1902 and they didn’t have the weather in November 1903, they flew in December the very day it became possible.

    I think maybe 1700s Britain was just rich enough from all the Wooden Ships And Iron Men they’d done, and just barely socially mobile enough to allow people like Michael Faraday to exist. Hinduism or Confucian Buddhism won’t tolerate a Michael Faraday.