AN/MCC-12

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The AN/MCC-12 is a frequency division multiplexer set used to connect sixty telephone subscriber circuits into a microwave radio relay system. The multiplexing frequency buildup consists of 60, 0-4 KHz wide channels, "stacked" one above another ranging in frequency from 12 KHz to 252 KHz to maintain channel separation. This composite band of frequencies is fed to a radio transmitter, such as the AN/TRC-66A, for transmission to a distant station, either line-of-sight or tropospheric scatter mode. Any one voice frequency channel can be selected to accommodate 16 multiplexed TTY channels simultaneously with the other 59 voice frequency channels. The MCC-12 is housed in a portable shelter, capable of mounting on an M35, 2 1/2 ton truck.

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