| AVERAGE POWER RATING PER CHANNEL | 250.0 MILLIWATTS OUTPUT |
| BASIC SHAPE STYLE | RECTANGULAR OR SQUARE |
| CIRCUIT CONSTRUCTION TYPE | ELECTRON TUBE |
| EXTERNAL DC OPERATING VOLTAGE IN VOLTS | 200.0 NOMINAL SINGLE VOLTAGE |
| EXTERNAL AC OPERATING VOLTAGE IN VOLTS | 6.3 NOMINAL SINGLE VOLTAGE |
| FREQUENCY PER CHANNEL | 0.2 KILOHERTZ MINIMUM OPERATING CHANNEL AND 4.5 KILOHERTZ MAXIMUM OPERATING CHANNEL |
| FSC APPLICATION DATA | TELEPHONE AND TELEGRAPH |
| IMPEDANCE RATING PER CHANNEL | 1.550 KILOHMS INPUT CHANNEL AND 0.200 KILOHMS OUTPUT CHANNEL |
| INCLOSURE TYPE | OPEN |
| OPERATING AC FREQUENCY IN HERTZ | 60.0 NOMINAL SINGLE VOLTAGE |
| OVERALL HEIGHT | 2.625 INCHES NOMINAL |
| OVERALL LENGTH | 4.500 INCHES NOMINAL |
| OVERALL WIDTH | 4.125 INCHES NOMINAL |
| PHASE | SINGLE |
| VARIATION FREQUENCY RATING IN DECIBELS | 1.0 |