The ‘phones in question are particularly interesting, as they turned out upon inspection to be a two-way radio in disguise. Cracking them open revealed a radio board and a logic board ...

MOTOTRBO R5 offers loud audio, advanced noise suppression, clear status indications and dedicated hardware controls.

Digital modes are ... broadcast over the air. Codec 2 is an open standard unlike other audio codecs. M17 also supports reflectors, which can link individual radios or entire repeaters together ...