Brdsnest Lemmy
  • Communities
  • Create Post
  • Create Community
  • heart
    Support Lemmy
  • search
    Search
  • Login
  • Sign Up
einfach_orangensaft@sh.itjust.works to Science Memes@mander.xyzEnglish · 2 days ago

50ohm goes brrrrrr

sh.itjust.works

message-square
14
fedilink
285

50ohm goes brrrrrr

sh.itjust.works

einfach_orangensaft@sh.itjust.works to Science Memes@mander.xyzEnglish · 2 days ago
message-square
14
fedilink
  • Remember_the_tooth@lemmy.world
    link
    fedilink
    English
    arrow-up
    14
    ·
    2 days ago

    I get the reference to the original meme. I don’t understand the EM spectrum component, though.

    • deranger@sh.itjust.works
      link
      fedilink
      English
      arrow-up
      31
      ·
      edit-2
      2 days ago

      They wish they were in an antenna and going out as radio waves, but instead they’re in a dummy load and not going anywhere. 50ohm is a common antenna impedance.

      • Remember_the_tooth@lemmy.world
        link
        fedilink
        English
        arrow-up
        11
        ·
        2 days ago

        Thanks. That puts me on the right track.

        https://www.onallbands.com/ham-radio-101-dummy-loads-smart-idea/

    • hedgehogging_the_bed@lemmy.world
      link
      fedilink
      English
      arrow-up
      8
      ·
      2 days ago

      Had to go get my radio-tech spouse. His reply “Oh, that’s the dumb name for a terminator…”

      Apparently “dummy load” isn’t what they call them in the USAF

      • einfach_orangensaft@sh.itjust.worksOP
        link
        fedilink
        English
        arrow-up
        6
        arrow-down
        1
        ·
        1 day ago

        i might be wrong here but i think a dummy load is different from a terminator, they both 50 ohm, but a terminator is more like a connector cap, while a dummy load is designed to dissipate heat and can often take many watts of power over extended time without starting glow

        • Eranziel@lemmy.world
          link
          fedilink
          English
          arrow-up
          1
          ·
          14 hours ago

          That’s my understanding as well. I’ve seen dummy loads used when testing transmitters at power so that nothing gets too hot. They usually have a big aluminum heat sink.

Science Memes@mander.xyz

science_memes@mander.xyz

Subscribe from Remote Instance

Create a post
You are not logged in. However you can subscribe from another Fediverse account, for example Lemmy or Mastodon. To do this, paste the following into the search field of your instance: !science_memes@mander.xyz

Welcome to c/science_memes @ Mander.xyz!

A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.



Rules

  1. Don’t throw mud. Behave like an intellectual and remember the human.
  2. Keep it rooted (on topic).
  3. No spam.
  4. Infographics welcome, get schooled.

This is a science community. We use the Dawkins definition of meme.



Research Committee

  • !spiders@lemmy.world

Other Mander Communities

Science and Research

  • !academia@mander.xyz
  • !science@mander.xyz
  • !scicomm@mander.xyz

Biology and Life Sciences

  • !abiogenesis@mander.xyz
  • !animal-behavior@mander.xyz
  • !anthropology@mander.xyz
  • !arachnology@mander.xyz
  • !balconygardening@slrpnk.net
  • !biodiversity@mander.xyz
  • !biology@mander.xyz
  • !biophysics@mander.xyz
  • !botany@mander.xyz
  • !ecology@mander.xyz
  • !entomology@mander.xyz
  • !fermentation@mander.xyz
  • !herpetology@mander.xyz
  • !houseplants@mander.xyz
  • !medicine@mander.xyz
  • !microscopy@mander.xyz
  • !mycology@mander.xyz
  • !nudibranchs@mander.xyz
  • !nutrition@mander.xyz
  • !palaeoecology@mander.xyz
  • !palaeontology@mander.xyz
  • !photosynthesis@mander.xyz
  • !plantid@mander.xyz
  • !plants@mander.xyz
  • !reptiles and amphibians@mander.xyz

Physical Sciences

  • !astronomy@mander.xyz
  • !chemistry@mander.xyz
  • !earthscience@mander.xyz
  • !geography@mander.xyz
  • !geospatial@mander.xyz
  • !nuclear@mander.xyz
  • !physics@mander.xyz
  • !quantum-computing@mander.xyz
  • !spectroscopy@mander.xyz

Humanities and Social Sciences

  • !archaeology@mander.xyz
  • !folklore@mander.xyz
  • !history@mander.xyz
  • !old_maps@mander.xyz

Practical and Applied Sciences

  • !exercise-and sports-science@mander.xyz
  • !gardening@mander.xyz
  • !self sufficiency@mander.xyz
  • !soilscience@slrpnk.net
  • !terrariums@mander.xyz
  • !timelapse@mander.xyz

Memes

  • !bushrat_confidential@slrpnk.net
  • !science_memes@mander.xyz

Miscellaneous

  • !answered@mander.xyz
  • !mander@mander.xyz
Visibility: Public
globe

This community can be federated to other instances and be posted/commented in by their users.

  • 2.61K users / day
  • 5.64K users / week
  • 9.82K users / month
  • 21.9K users / 6 months
  • 1 local subscriber
  • 19K subscribers
  • 6.07K Posts
  • 134K Comments
  • Modlog
  • mods:
  • Salamander@mander.xyz
  • fossilesque@mander.xyz
  • SciBot@mander.xyz
  • fossilesque@lemmy.dbzer0.com
  • BE: 0.19.5
  • Modlog
  • Instances
  • Docs
  • Code
  • join-lemmy.org