The static on old CRT TVs with rabbit ears was the cosmic microwave background. No one in the last 25 years has ever seen it.

  • DrownedRats@lemmy.world
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    1 day ago

    People born before 2000 think older technology just evaporated the minute the millenium ticked over.

    • LovableSidekick@lemmy.world
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      1 day ago

      Like when the black and white world suddenly got colorized! My grandpap told me about them old days - when the lawn, the sidewalk and the sky were just different shades of gray.

  • bonn2@lemm.ee
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    1 day ago

    2001 here literally grew up with CRT static, you have your years a bit off there.

    • TwanHE@lemmy.world
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      1 day ago

      I was about to say, i think we had a CRT till about 2010. My grandma still has one upstairs so even my youngest cousins still grew up with it.

  • apemint@lemmy.world
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    2 days ago

    Well, not really. The cosmic microwave background radiation was a tiny fraction of that noise. What everyone saw was mostly thermal noise generated by the amplifier circuit inside the TV.

    • LovableSidekick@lemmy.world
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      1 day ago

      Random radio sources, but a small part of the signal is CMB. I wasn’t sure what you even meant by thermal noise but I believe it’s a phenomenon of flatscreens. I found something that said it was “similar to snow on analog TVs” - so apparently there’s a difference.

      Funnily, Google AI says, “In the 1940s, people could detect the CMB at home by tuning their TVs to channel 03 and measuring the remaining static after removing other sources. This allowed them to prove the Big Bang before scientists did.” So they had that going for 'em, which is nice.

      • piecat@lemmy.world
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        1 day ago

        “Thermal Noise” is a phenomenon where everything makes EM noise, just from thermal energy.

        If you were to put such a TV in a faraday cage, with an RF termination, you would see something similar. Because noise is inherently part of the circuitry and amplifiers.

  • Blackmist@feddit.uk
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    1 day ago

    Last time I thought about static I wondered why colour TV didn’t show colour static.

    Turns out the colour signal was on very specific frequencies, and if it wasn’t present, it would assume it was a black and white signal and turn off the colour circuit.

    • billwashere@lemmy.world
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      2 days ago

      Don’t you still see this when using an OTA ATSC tuner on a newer LCD display? I thought this was a function of the signal generation and not the display technologies.

      • anomnom@sh.itjust.works
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        22 hours ago

        Cheap led tvs were like 1/5 the cost of Analog TVs. The digital switch over really finished them off too.

        Really it’s the size/price that did it though. My buddy paid I think $3k for a maybe 40” Trinitron in 99-2000. It probably weighed 200lbs. Looked amazing at the time but it was probably only months before big leds came out. Plasma might have been a thing then but we’re like $10k+

      • Blackmist@feddit.uk
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        2 days ago

        I think they’re more likely to have been scrapped than other old tech.

        They’re bulky, and mine was too heavy to get out in the attic. I still have my ZX Spectrum and Amiga, but the CRT needed for lightgun games is long gone.

    • dan1101@lemm.ee
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      2 days ago

      Well to be fair at some point most/all CRTs showed a blue screen instead of static. So it’s possible someone born in 2000 never saw the snowy display.

      • Allero@lemmy.today
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        2 days ago

        As someone born in 2000, I’ve personally seen it and I think most people around me did. Maybe someone didn’t, though.

    • Hobbes@startrek.websiteOP
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      1 day ago

      No, I just couldn’t remember exactly when. And as another commenter pointed out, what I should have said was analog TV’s.

  • biggerbogboy@sh.itjust.works
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    21 hours ago

    2007er here, I grew up with a CRT as the TV in our second living room, I’d occasionally watch stuff like Bob the builder and others, but since it was all on analog tv, channels started displaying lots of static, pretty much only like 2 or 3 channels were working last I saw.

    Also we had that CRT TV until 2018, then chucked it in the store room, then threw it out in 2020, I kinda miss it, kinda don’t, idk.

    • frezik@midwest.social
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      2 days ago

      It is, but those late model CRTs often had a lot of digital circuitry that displayed a solid color on channels with nothing on them. Unless there was a much older CRT around, they never would have seen it.

    • davidgro@lemmy.world
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      2 days ago

      Even before the 2000s they started showing a blue screen instead of static.

      That wasn’t just a digital or flat panel thing.

      But of course old sets were around for a long time.

      • Catoblepas@lemmy.blahaj.zone
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        2 days ago

        My memory of the exacts here are fuzzy, but I think this depended on whether or not your TV picked up digital signal, analog, or both. I remember around that time we had a TV that would pick up static on some channels and have a blue input screen on others.

        • FlihpFlorp@lemm.ee
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          2 days ago

          I remember back in the Wii days when I was young we had a flat screen that would go to the digital pattern with no input. However sometimes once in a while it would get that static loud no signal so I think mine had both

          I don’t really have a point here just wanted to share

        • entropicdrift@lemmy.sdf.org
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          2 days ago

          Yeah, for instance the semi-ubiquitous “small TV with a vhs player built in” that was in a ton of mini-vans and kids’ rooms well into the early 2000s only supported analog cable/antenna signals, so it would give the black and white static when there was no signal.

        • Aceticon@lemmy.world
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          2 days ago

          It’s definitelly an analog over the air TV thing.

          The way digital works you would either get a “No signal” indicator (because the circuitry detects the signal to noise ratio is too low) or squarish artifacts (because of the way the compression algorithms for digital video are designed).

    • Farid@startrek.website
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      2 days ago

      Technically, it’s not about the display technology, but instead about the signal/tuner. More specifically if it’s analog or digital. Some modern TVs still have analog or hybrid tuners for backwards compatibility and regions that still use analog, so they can display static. For instance, in Ukraine we finished the switch to digital TV only a couple of years ago. If your TV had no digital tuner (as was the case for many) you had to buy a DAC box. Retirees/pensioners got them for free, sponsored by the government.

  • dual_sport_dork 🐧🗡️@lemmy.world
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    2 days ago

    Tube TV’s remained in common service well into the 2010’s. The changeover from analog to fully digital TV transmission did not happen until 2009, with many delays in between, and the government ultimately had to give away digital-to-analog tuner boxes because so many people still refused to let go of their old CRT’s.

    Millions of analog TV’s are still languishing in basements and attics in perfect working order to this very day, still able to show you the cosmic background, if only anyone would dust them off or plug them in. Or in many retro gaming nerds’ setups. I have one, and it’ll show me static any time I ask. (I used it to make this gif, for instance.)

    In fact, with no one transmitting analog television anymore (probably with some very low scale hobbyist exceptions), the cosmic background radiation is all they can show you now if you’re not inputting video from some other device. Or unless you have one of those dopey models that detects a no-signal situation and shows a blue screen instead. Those are lame.

    • Captain Aggravated@sh.itjust.works
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      1 day ago

      Amateur radio operators are indeed allowed to transmit analog NTSC television in the UHF band. It’s most commonly done on the 70cm (440MHz) band, and a normal everyday 90’s television is all you need to receive the signals. You’d tune to what would have been cable channels 57 through 61. The use cases for this have decreased in recent years; for example you used to see hams using amateur television to send video signals from RC aircraft or model rockets, now that’s done with compressed digital video over something like Wi-Fi and doesn’t require a license. But, it’s still legal for hams to do.

    • RaoulDook@lemmy.world
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      I think my mom still uses the last CRT TV that I had. Gave it to her when I bought my first 720p HD TV, as the old CRT was better than her old TV. Later on I also gave her that HD TV but she still has the CRT too.

  • Screen_Shatter@lemmy.world
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    2 days ago

    I bought a plasma in 2009 that would show static if I turned it to cable channels without cable plugged in. Plasmas were susceptible to burn in and since I would game a lot I could see health bars etc start to burn in after a while. Whenever that would happen I would turn it to the static screen - making each pixel flip from one end of the spectrum to the other rapidly like that would actually help remove the burn in.