The RF-7800S-TR provides secure, digitized voice and data communications to every member of the team without distracting his or her attention from the task at hand. The radio's small, lightweight design fits easily in a pocket, and may be powered by a rechargeable lithium-ion battery or an optional primary battery holder using commercially available AA batteries. A unique digital wireless network allows reliable communications even when backbone and trunk services are not available or out of range. The network is designed to provide robust, long-range operation even in the most challenging urban terrain. Full duplex, priority-based voice conferencing allows several simultaneous talkers on the net with an unlimited number of listeners--resulting in a more natural, dynamic operating environment, free from the constraints of a traditional half-duplex radio.