• 0 Posts
  • 70 Comments
Joined 9 months ago
cake
Cake day: March 31st, 2025

help-circle







  • my background in biochemistry makes me think it’s almost guaranteed to be impossible, so i don’t worry about it.

    however, in hypothetical case it isn’t, i’d argue that it would be proper to destroy this technology in all cases along with inventors, because it would be horridly expensive initially, and first people to get it would be people like peter thiel and larry ellison. there was a recording where putin and xi admitted that they are also interested. then what you’ll get would be class of immortal oligarchs. planck once said, progress in physics happens one funeral at a time, it’s really more general than just physics, and you can say goodbye to any progress from that point on





  • fullsquare@awful.systemstoCanada@lemmy.caNation Building
    link
    fedilink
    arrow-up
    9
    ·
    edit-2
    19 days ago

    it’s a bit like crude oil. lumber cut up to what standards? or maybe chipboard or veneer or paper or cellulose fiber (used in many things including artillery propellant, hot commodity lately)? or maybe some form of chemically modified cellulose or maybe something else? then do you have industrial capacity and logistics for that? what if customer from egypt won’t accept fiberboard made to an argentinian standard, that you made for an argentinian customer that changed mind or the other way around? canada is a rich country, can you make it competitive? sometimes it works. i heard of a case of company that bought logs from finland, processed them in poland into fiberboard and sold them, at least once, to a customer in tanzania







  • Mate do i have just the right thing for you, but it requires some soldering. It’s also probably cheapest solution working over longer range than you need

    First you need two directional antennas. Use this https://lea.hamradio.si/~s53mv/wumca/cup.html the 13cm design specifically. Design of the dipole element is on another page https://lea.hamradio.si/~s53mv/wumca/sbfa.html They’re using hard to get semirigid coax but you can really just use common RG178 with braid tinned to make it stiff. This way you don’t have to leave D section they way they did, you can just solder core to the shield at the end while preserving total length (or ~1-2 mm less, because wifi is slightly higher frequency; 53-52 mm total). That dummy cable thing can be just any stiff piece of wire. Good way to get this would be getting a pack of u.fl-SMA pigtails, which you can also use for connection.

    You also don’t need special aluminum housing like they do, cookie tin of the right size would be sufficient, or any other container of similar nature. If you can’t weatherproof it, putting it inside on windowsill is also fine

    Then, plug TL-WN722N into it, or some other single-antenna thing, and you’re set. This one connects over USB and has removable RPSMA antenna, so you can connect it easily with correct cable (SMA plug - RPSMA plug)

    to your new directional antenna. This thing works well over 200m distance, provided clear line of sight, and probably more than that


  • here if you need anything over certain power (6kW; depends on country i guess) you need a three phase installation, and even if you get single phase, it’s really handled as three phase split between single phase customers (a block gets three phase supply, then splits flats in three groups, each group gets connected to one phase). this gets supplied by a distribution transformer that might serve somewhere around 200 people per (in residential areas)

    i understand that sometimes americans also get distribution like this, with 208/120 three phase coming from substation, without 240v available