A system and apparatus for recording and archiving diverse communications over radio transmissions. The system and apparatus enables unattended airports within a geofenced area to generate a useful archive of all radio communications made by Automatic Dependent Surveillance-Broadcast (ADS-B) equipped aircraft and ground personnel. A combination of hardware and software components are provided to record and store radio transmissions in computer files. Once stored, the computer files may then be replayed for training and investigation purposes. Likewise, users may generate custom reports based upon the data embodied in the computer files.