TM-9-2350-274-BD M109 Battlefield Damage Assessment and Repair Download
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TM 9-2350-274-BD COMMUNICATIONS SYSTEM Procedural Steps (Cont): 7. a. Connect the CVC helmet to the chest plate switch. Connect the chest plate switch to any of the R-124 receptacles (5, 10, 12, or 14 in the intercom figure). b. Set FUNCTION SWITCH (2) and FUNCTION SWITCH (15) to the intercom BC position. (Both function switches must be in the BC position to allow all four boxes access to intercom.) c. Adjust VOLUME CONTROL (4) for desired audio level in the headsets. Record the BDAR action taken. When the mission is completed, as soon as practicable, repair vehicle using standard maintenance procedures. 11-14