All AvaLAN products use at least a 128-bit AES FIPS 197 NIST certified encryption protocol. We also offer radios that are NIST certified FIPS140-2 Level 2 encryption.
Every non-line of sight is unique and the range depends on how many obstructions are in the way, and the size, shape, and density of each obstruction. Foliage is easier to penetrate than a building.