PLBs work most of the time, but often the SPOT "here I am" messages I send home never arrive
PLB's are superior to SPOT. The PLB's talk to NOAA satellites. If a NOAA satellite is not in immediate contact with a ground station, it will save your distress signal and forward it when a ground station comes into view. SPOT's talk to private satellites. If the SPOT satellite can't see a ground station, then your distress signal is lost. That's why SPOT's don't always get through. Which one do you want to bet your life on?
