• lchapman@programming.dev
    link
    fedilink
    English
    arrow-up
    5
    ·
    1 year ago

    1800 symbols per second is the benchmark for shortwave data transmission.

    https://en.m.wikipedia.org/wiki/PACTOR

    Not sure exactly how useful that would be, but the latency is low: 0.01 seconds to cross the width of the USA.

    A round trip packet from NY to SF takes 0.05 seconds, a fifth of the speed. Fibre is quick, but not as quick as radio.

    There’s about 1400 bytes usable in a TCP packet, versus the 1800 symbols per second over shortwave. Lots of TCP packets can be exchanged per second.

    I don’t see the value proposition.

    • stevehobbes@lemmy.world
      link
      fedilink
      English
      arrow-up
      1
      ·
      1 year ago

      That’s plenty of data to trade on. If you believe in efficient markets the priced should be more or less the same globally, you can make a lot of money if you know what the market price in Tokyo should be because you know the price in NY first, or vice versa.