This network configuration shares two frequencies. A private transmit frequency is generally assigned to a supervisor or team leader who can speak whenever they want to using a repeating headset, body radio, or base station. The balance of the team transmits on a shared frequency (using VOX or a push to talk PTT switch) to the Repeating radio. (Note: team members other than single supervisor can only speak one at a time) The team hears each other by receiving the signal transmitted from others in the team after it is "repeated" from the supervisor's Repeating radio. This type of network is ideal when one person MUST be able to communicate at all times OR if you want to pipe in pages from an intercom. The network will not work, however, unless you have a working Repeating radio turned on and operating.
Half Duplex Network utilizing a repeating headset as controller
Half Duplex Network utilizing a repeating base as controller