How It Worked
In a GE Marc V system:
- electronics that determine which channel a conversation will occur on are inside each radio. Radios scan all available channels in the system to find an unused channel for a conversation. They also scan to look for a tone sequence initiating a conversation from another radio in their own group.
- repeaters are essentially stand-alone repeaters, except for tone handshaking electronics, deadbeat disable computer, telephone patch equipment, or equipment used to bill air time, (talking time). Some of these were options.
- because call set up was slower than transmission-trunked systems, repeaters had a long hang time in order to hold a group's mobile radios on a channel until a conversation was finished. This conversation trunking was the primary difference between Ge Marc V and other systems.
- a trunked system or area could have up to 20 channels. Some 100-channel models, for example, could accommodate five 20-channel areas.
- the user would hear a low-pitched error tone if they took the microphone off hook and no channels were available or the radio was out-of-range.
Read more about this topic: GE Marc V
Famous quotes containing the word worked:
“... often in the heat of noonday, leaning on a hoe, looking across valleys at the mountains, so blue, so close, my only conscious thought was, “How can I ever get away from here? How can I get to where they have books, where I can be educated?” I worked hard, always waiting for something to happen to change things. There came a time when I knew I must make them happen; that no one would do anything about it for me. And I did.”
—Belinda Jelliffe (1892–1979)