Trunked radio systems, as used by police, firefighters and EMS worldwide are not peer-to-peer. You transmit to the trunk, it relays to people in your selected g

Trunked radio systems, as used by police, firefighters and EMS worldwide are not peer-to-peer. You transmit to the trunk, it relays to people in your selected group. All radios rely on a control signal from the trunk for determining where to send and when to listen. https://en.wikipedia.org/wiki/Trunked_radio_system https://en.wikipedia.org/wiki/Trunked_radio_system