| EARPHONE CONTROLLING AGENCY | CLARK DAVID CO INC |
| EARPHONE ELEMENT TYPE | DYNAMIC |
| EARPHONE IDENTIFYING NUMBER | U1 PART NO. |
| EARPHONE IMPEDANCE RATING | 150.0 OHMS NOMINAL |
| EARPHONE QUANTITY | 2 |
| CONNECTOR IDENTIFYING NUMBER | U77/U PART NO. |
| CONNECTOR NAME | PLUG |
| CONNECTOR TO JUNCTION CORD LENGTH | 8.250 FEET |
| CONNECTOR CONTROLLING AGENCY | MIL |
| CONTROLLING AGENCY | MIL |
| FREQUENCY RATING | 0.3 KILOHERTZ MINIMUM AND 4.0 KILOHERTZ MAXIMUM |
| IDENTIFYING NUMBER | M-6A/UR TYPE NO. |
| IMPEDANCE RATING | 85.0 OHMS NOMINAL |
| OPERATING CURRENT RATING | 60.0 MILLIAMPERES NOMINAL |
| OUTPUT LEVEL RATING | 48 DB BELOW 1 V PER BAR |
| MICROPHONE ELEMENT TYPE | CARBON |
| MICROPHONE MOUNTING FACILITY | ADAPTER FASTENED TO RIGHT SIDE OF HEADBAND |
| MOUNTING METHOD | SUSPENDED ON HEADBAND EARPHONE |