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AM radio law opposed by tech and auto industries is close to passing | Ars Technica

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AM Radio has an extremely important role in emergency broadcasting, because you can cover a whole continent using just 3-4 broadcasting stations, and it is so easy to demodulate, that you can build completely analog recievers that need no power source (they use the carrier wave as a power source). This also means that AM receivers are very cheap, so in a lot of developing countries the only broadcasts most people can afford, and will reach them are AM.

I think we should keep AM radio around, at least for emergencies.

Also, unfortunately, when HF bandwidth gets freed up, it mostly ends up going to companies that use it for high frequency trading, and not to things where it would benefit the public, like ham radio, or digital broadcasts.

memes

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Kenya

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This mostly wasn't actually Google, the website it refrences was written by ChatGPT, Google's crawler just found it and shows it in the summary.

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Known for His Pointed Questions, a 15-Year-Old Is Ejected From a G.O.P. Event

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Peter Wiggin (Locke) as well as his sister Valentine Wiggin (Demosthenes) are Ender Wiggin's siblings. After Ender was

shipped off to military school at age 6

, Peter convinced his sister to write on "the Nets" about the war, posing as adults using the Pseudonyms Locke and Demosthenes. They managed to get a significant amount of influence, especially considering they were like 10 years old.

Also, relevant xkcd.

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What is something many people believe but is not true?

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CRT screens generate bremsstrahlung (x-rays) from slowing electrons, so the front piece of glass is normally made of lead glass, or barium-strontium glass to block it.
After the General Electric incident, testing showed that nearly every manufacturers TVs were emitting too many x-rays. This led to the recommendation to stay 6 ft. away from the TV when it was on. The FDA then later imposed limits on how much radiation a TV was allowed to emit.
With the these regulations, if you were to absorb all x-rays from a CRT for 2 hours a day, every day, you would get 320 millirem per year (comparable to the average US background radiation of 310 millirem per year). See here, as well as this article.
Edit: Also, significant doses of x-rays can blind you. Radiologists in medicine particularly have to shield against it, since they are exposed to it every day, and exposure builds up. See here and here.
Edit again: Wasn't paying enough attention. That last source talks about ionizing radiation specifically, so not x-rays.

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Morse post

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Fun fact about that: in morse code, SOS is a prosign. This means it gets its own special rules.

Rather than being three seperate letters (... --- ...), it's one letter without any letter spaces (...---...). This is something that applies to all prosigns in morse code, though most of them are just two letters long.

Also, when sending it on repeat you just continue the pattern without any spaces. Instead of ...---... ...---... (with a letter space) or ...---.../...---... (with a word space), you send ...---...---...---...---... and just keep continuing the pattern. iirc SOS is the only prosign where this is a thing.

Other prosigns are for example HH (........) to indicate a correction to something previously sent, and SK (...-.-) (silent key) to signal that you have finished with the current conversation and the frequency is now clear.

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Was passiert gerade in eurer bubble so?

Momentan (unter anderem) Amateurfunk. Ende dieser Woche ist die HamRadio, die größte Amateurfunkmesse in Europa.

Langsam ist der 11 Jahre lange Sonnenfleckenzyklus wieder am Maximum, und die KW-Ausbreitungsbedingungen sind für weit entfernte Kontakte perfekt. Mit digitalen Modi wie FT-8 und WSPR kommt man problemlos bis ans andere Ende der Welt.