| EARPHONE CONTROLLING AGENCY | SIG |
| EARPHONE ELEMENT TYPE | MAGNETIC |
| EARPHONE IDENTIFYING NUMBER | ANB-H1A TYPE NO. |
| EARPHONE IMPEDANCE RATING | 300.0 OHMS NOMINAL |
| EARPHONE QUANTITY | 2 |
| CONNECTOR CONTROLLING AGENCY | SIG |
| CONNECTOR IDENTIFYING NUMBER | PL-68 TYPE NO. |
| CONNECTOR NAME | PLUG |
| CONNECTOR TO JUNCTION CORD LENGTH | 5.000 FEET |
| CONTROLLING AGENCY | SIG |
| FREQUENCY RATING | 0.3 KILOHERTZ MINIMUM AND 4.0 KILOHERTZ MAXIMUM |
| IDENTIFYING NUMBER | M-6/UR TYPE NO. |
| IMPEDANCE RATING | 40.0 OHMS MINIMUM AND 100.0 OHMS MAXIMUM |
| OPERATING CURRENT RATING | 50.0 MILLIAMPERES NOMINAL |
| MICROPHONE ELEMENT TYPE | CARBON |
| MICROPHONE MOUNTING FACILITY | BOOM ADAPTER ON LEFT SIDE OF HEADBAND |
| MOUNTING METHOD | SUSPENDED ON ADJUSTABLE HEADBAND EARPHONE |