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#cavity — Public Fediverse posts

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    Its been a while since last post about #meshtastic 868 #cavity filter build
    (techhub.social/@gafu/114162745)

    I build 2 pc of the long one with 3 elements, and 2 ones with 4 elements.

    I got different unwanted spikes and now i know where they came from: its related to the lenght of the coax wires.

    With more elements it get difficult to bring each element to the right resonance frequency, so i soldered brass m4 nuts to the cap and installed brass setscrews on top of each element.

    I fidddled around with aditional decoupling wires to get deeper filter response.

    In the pictures you can see the filter response from the better one of the 4-element type. The Markers are in or close to the local used GSM/LTE cellular band

  2. "Tell me my origin story again," said Nierex. He loved this story.

    His mother unfurled cilia indulgently. Truly, none of the millions she'd spawned had been like Nierex.

    "I noticed your broodmates were disappearing. So I hid those of you who remained in my abdominal #cavity--no predator could get you there! When I thought you were big enough, I spat you out."

    "The others didn't survive your stomach acid, but I did," Neirex said happily.

    His mother glowed with pride.

    #wss366 #microfiction

  3. CW: #wss366 5/30 #cavity R-18G Gore

    #wss366 5/30 #cavity

    The light reflected off the sterile white porcelain fixtures and garish blood-red splashes. How dare he say she had ten cavities? Ten! No way insurance would cover that. The dentist and his assistant wordlessly asked, “What will you do with us now?” But she knew. There were dozens of undiscovered caves in the hills. The pair would fit nicely in one of the smaller cavities.

    She laughed at her little joke. Cavity.

    #MicroFiction #NMPrompts #NMv366 #Horror #Gore #R18G

  4. Forrest awoke. He blinked his eyes several times and looked out the hole of his #cavity. Perfect weather. It would be a busy day.
    He emerged and shook out his feathers. It was time to menace litterbugs and instill some terror. He clacked his beak then took to silent wings in search of prey. #wss366

  5. i spent 90 minutes at the #dentist yesterday getting phase 1 (of 2) of a dental crown. my final appt in 2 weeks will hopefully end this adventure. hopefully!

    this will literally cap off a 6year saga including… toothache, #cavity, emergency cavity repair, infection, #antibiotics, #RootCanal, gum disease and finally a much more invasive than anticipated grinding and (soon) permanent capping of the dead tooth, overall costing about $8k when all said and done.

    tldr?

    look after your #teeth folks!

  6. my #dentist ignored a #cavity I started developing a year ago and now I need a #rootCanal to dig the entire nerve out 🙃

    ladies, don't let dentists and #doctors assume you're exaggerating when you say you have pain! insist you get the care you need, because your #pain is #valid despite the #sexist assumption that "women complain too much"

    tiktok.com/t/ZTR3FnCbe/

  7. Well done to those people selecting <The cavity magnetron> option.

    Whilst the use of #magnetic fields as a means to control the flow of an #electrical current was know earlier, the #cavity #magnetron was introduced by John Randall and Harry Boot at the University of #Birmingham in 1941.

    It was initially used in #RADAR giving the allies a significant lead in #WorldWar2.

    It subsequently found another use in #microwave ovens of which over 1bn are in use today.

    See:

    en.wikipedia.org/wiki/Cavity_m