TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download
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TM 9-2350-311-10 2–1 OPERATOR’S CONTROLS, INDICATORS, AND INSTRUMENTS — CONTINUED 2–1.4 Crew Controls and Instruments — Continued 26 27 28 29 30 31 32 33 34 AMPLIFIER AM-1780/VRC COMMANDER’S CONTROL BOX C-2298/VRC AN/PRC-68 RADIO AND APPLIQUE OG-174 CONTROL CASE C-10327/GYK–29 COMBAT OVERRIDE SWITCH (M109A4/M109A5) NBC CONTROL BOX ASSEMBLY (M109A4/M109A5) DATA DISPLAY, GUN DIRECTION, OD-144(V)/GYK–29 DATA DISPLAY, DEFLECTION/ELEVA- TION (ID--2124/GYK–29) DATA DISPLAY, DEFLECTION/ ELEVATION (ID-2124/GYK–29) Provides power and voice switching circuitry for vehicular inter- communications systems. Provides operator attachment to vehicular system. Provide two-way radio communication. Refer to TM 11-5820-882-10 for operation of AN/PRC-68 radio. Refer to TM 11–7440-283-12–1 and TM 11–7440-283-12–2 for operation of the AN/GYK–29 battery computer system. Used to aid in starting the engine in emergency situations. Provides operational control of vehicular NBC equipment. Refer to TM 11–7440-283-12-1 and TM 11–7440-283-12–2 for operation of the AN/GYK–29 battery computer system. Located on right front cab roof. Refer to TM 11–7440-283-12–1 and TM 11–7440-283-12–2 for operation of the AN/GYK–29 battery computer system. Located on left front cab roof. Refer to TM 11–7440-283-12–1 and TM 11–7440-283-12–2 for operation of the AN/GYK–29 battery computer system. 2-14