3 ms·
You do need some level of line of sight to the sky for Iridium voice, less so for sending SBD (similar to a text message). If your GPS can get a fix, you can
by srdeveng 10y ago
You do need some level of line of sight to the sky for Iridium voice, less so for sending SBD (similar to a text message).
If your GPS can get a fix, you can probably find enough signal to send a SBD.
Iridium carrier signal is stronger than GPS.