Radio Operator, High Speed, Manual (766) Enlisted Personnel

Installs and operates tactical field radio transmitting and receiving equipment. Sends and receives messages by International Morse Code (CW, ICW, or ton) signals and by light signals. Normally operates in radio nets above the level of a division, such as corps or Army.
Receives CW, ICW, or tone signals (copying by typewriter) at a minimum speed of 25 five-letter random code groups per minute without error for a minimum period of 3 consecutive minutes out of 5. In addition, receives, by hand printing, 13 five-letter random code groups per minute.
Transmits CW, ICW, or tone signals, using hand key, at a minimum speed of 20 five-letter random code groups per minute without error for a minimum period of 2 consecutive minutes out 3.
Handles, without error, a minimum of 24 plaindress normal form messages (averaging 10 five-letter random code groups of text) per hour in a field radio net or two or more stations through natural interference.
Receives and transmits messages by light signals at a minimum speed of 5 words per minute.
Maintains records pertaining to the handling of messages.
Performs first echelon maintenance by keeping equipment clean, inspecting cords, plugs, antenna mast, receiver, transmitter and calibration charts, making minor repairs or adjustments, such as changing tubes, adjusting frequencies and adjusting key, using simple hand tools.
Must possess a working knowledge of combined radiotelephone and radiotelegraph and authentication procedures. May be required encipher and decipher messages using Converter M-209.