Infographic: PLBs vs Sat Messengers: Comparing two types of Emergency Communicators

https://i.redd.it/y1pcnmwimffz.jpg via /r/Infographics https://www.reddit.com/r/Infographics/comments/6td6wq/plbs_vs_sat_messengers_comparing_two_types_of/?utm_source=ifttt