Study the architecture and operational flow of multi-channel digital trunked radio systems.
Simultaneous monitoring of a digital control channel and associated voice frequency pool.
Following control channel instructions to hop across frequencies and demodulate C4FM/TDMA digital voice.
Digital trunked systems use a dedicated control channel to manage a pool of voice frequencies. This simulation demonstrates how SDR software parses control instructions to automatically "hop" and decode active talkgroups.
Trunking provides high spectral efficiency, but increasing use of AES-256 encryption is closing the gap on public transparency for many agencies.
Monitoring public safety traffic is legal in many areas, but interfering with or decrypting encrypted traffic is a federal offense.
Explore MotoTRBO (DMR) and how it differs from the public safety P25 standard.