The Q600 system includes the QX-600 wireless intercom master station and from 1-6 QTR-600 belt packs (priced individually above). The master station on the Q600 transmits on one frequency in the VHF band (150-216 MHz), and receives up to six frequencies within the UHF band (494-790 MHz). The Q600 system offers hands free, full-duplex, continuous communication. Up to six people can be equipped with the wireless FM belt pack remotes on the Q600. The QX-600 master station can connect into virtually any wired system-- typically Clear-Com, RTS, Telex and ROH. When the QX-600 is connected into a hardwired intercom system, the number of master stations and belt pack remotes (six per station) is limited only by the number of available frequencies.