A communication system (100) including a portable radio (130) selectively transmitting radio signals, a first vehicular repeater system (110) including a first vehicular repeater (112) adaptable to receive radio signals transmitted by the portable radio (130). A first mobile radio (114) is coupled to...http://www.google.com/patents/US20050070221?utm_source=gb-gplus-sharePatent US20050070221 - Vehicular repeater multi-unit system and method for allowing the first vehicular repeater unit on-scene to remain priority
