A wireless microphone system comprising: a plurality of portable wireless microphone transmitter units (14, 16); a plurality of digital receiver modules (20, 22) configured to alternate transmitting wireless synchronization pulses and to receive audio information from the plurality of portable wireless microphone transmitter units (14, 16) synchronized to the synchronization pulses; and a coordinator module in communication with each of the digital receiver modules (20, 22) and configured to coordinate transmission of synchronization pulses among the plurality of digital receiver modules (20, 22) in accordance with a predetermined transmission sequence; wherein the wireless microphone system is configured to receive the audio information from at least some of the portable wireless microphone transmitter units (14, 16) through the digital receiver modules (20, 22) and to deliver the amplified audio information exclusively to a predetermined destination, wherein each of the plurality of portable wireless microphone transmitter units (14,16) is configured to operate under a common time division multiple access, TDMA, format within a repeating frame defined by the alternating wireless synchronization pulses from each of the plurality of digital receiver modules (20,22), wherein each of the plurality of portable wireless microphone transmitter units (14,16) is assigned to a respective slot of the repeating frame, wherein an audio information processor within each of the portable wireless microphone transmitter units (14, 16) configured to receive the audio information from a microphone, to retrieve an identifier of the portable wireless microphone transmitter unit (14, 16) from memory and to incorporate the audio information and identifier into an audio information packet, and wherein the coordinator module is further configured to receive audio packets within the respective assigned slot from each of the plurality of portable wireless microphone transmitter units (14,16) through each of the plurality of digital receiver modules (20,22) and to select the digital receiver module (20,22) providing the greatest magnitude slot content as the preferred audio signal source for that portable wireless microphone transmitter unit (14, 16) for that frame. a plurality of portable wireless microphone transmitter units (14, 16); a plurality of digital receiver modules (20, 22) configured to alternate transmitting wireless synchronization pulses and to receive audio information from the plurality of portable wireless microphone transmitter units (14, 16) synchronized to the synchronization pulses; and a coordinator module in communication with each of the digital receiver modules (20, 22) and configured to coordinate transmission of synchronization pulses among the plurality of digital receiver modules (20, 22) in accordance with a predetermined transmission sequence; wherein the wireless microphone system is configured to receive the audio information from at least some of the portable wireless microphone transmitter units (14, 16) through the digital receiver modules (20, 22) and to deliver the amplified audio information exclusively to a predetermined destination, wherein each of the plurality of portable wireless microphone transmitter units (14,16) is configured to operate under a common time division multiple access, TDMA, format within a repeating frame defined by the alternating wireless synchronization pulses from each of the plurality of digital receiver modules (20,22), wherein each of the plurality of portable wireless microphone transmitter units (14,16) is assigned to a respective slot of the repeating frame, wherein an audio information processor within each of the portable wireless microphone transmitter units (14, 16) configured to receive the audio information from a microphone, to retrieve an identifier of the portable wireless microphone transmitter unit (14, 16) from memory and to incorporate the audio information and identifier into an audio information packet, and wherein the coordinator module is further configured to receive audio packets within the respective assigned slot from each of the plurality of portable wireless microphone transmitter units (14,16) through each of the plurality of digital receiver modules (20,22) and to select the digital receiver module (20,22) providing the greatest magnitude slot content as the preferred audio signal source for that portable wireless microphone transmitter unit (14, 16) for that frame.