4 ms·

I’m fairly certain they will all require LOS or an external antenna.

• lxgr 4y ago
  Iridium pagers supposedly worked indoors (close to a window), due to the very low modulation rate used. They were only one-way, though.
  • wyldfire 4y ago
    They did indeed.
  • Scoundreller 4y ago
    And same modulation used for ringing a device, so you could at least be prompted to run into LOS for incoming calls.