| EARPHONE CONTROLLING AGENCY | WESTERN ELECTRIC CO INC |
| EARPHONE ELEMENT TYPE | MAGNETIC |
| EARPHONE IDENTIFYING NUMBER | HC-3 MODEL NO. |
| EARPHONE IMPEDANCE RATING | 256.0 OHMS NOMINAL |
| EARPHONE MOUNTING METHOD | SUSPENDED ON HEADBAND |
| EARPHONE QUANTITY | 1 |
| CONNECTOR CONTROLLING AGENCY | WESTERN ELECTRIC CO INC |
| CONNECTOR IDENTIFYING NUMBER | 3 MODEL NO. |
| CONNECTOR NAME | CLIP |
| CONNECTOR TO JUNCTION CORD LENGTH | 7.000 FEET |
| CONTROLLING AGENCY | WESTERN ELECTRIC CO INC |
| DC RESISTANCE RATING IN OHMS | 28.0 NOMINAL |
| FREQUENCY RATING | 0.2 KILOHERTZ MINIMUM AND 2.0 KILOHERTZ MAXIMUM |
| IDENTIFYING NUMBER | N-1 MODEL NO. |
| IMPEDANCE RATING | 300.0 OHMS NOMINAL |
| OUTPUT LEVEL RATING | 38 DB ABOVE 1 MW AT 28 DYNES PER SQ CENTIMETER |
| MICROPHONE ELEMENT TYPE | CARBON |
| MICROPHONE MOUNTING FACILITY | BOOM ATTACHED TO HEADBAND AND ADJUSTABLE BOOM SECURED TO RECEIVER |
| OPERATING CURRENT RATING | 100.0 MILLIAMPERES NOMINAL |
| SPECIAL FEATURES | A 516A CAPACITOR IS INCLUDED AS AN INTEGRAL PART OF THE CORD AND IS USED IN TESTING TELEPHONE CABLE PAIRS WITHOUT CAUSING INTERFERENCE |