Specifications

Introduction
4
Limiter Range 50 dB
Carbon Mic
Excitation
Current
10 milliamps, nominal
CURRENT SOURCE
Transfer Ratio 5 milliamps/1.5 volts
Output 5 milliamps into 200 ohms
HEADPHONE AMPLIFIER
Overall
Voltage Gain
24 dB
Overall
Voltage Gain
9 volts peak-to-peak into 25 ohms
Output Power Headset Station: 1/2 watt into 25 ohms
Speaker Station: 2 watts into 8 ohms
Frequency
Response
150 Hz to 8000 Hz, 3 dB
Headphone
Impedance
Range
25 to 600 ohms
Sidetone
Adjustment
Range
20 dB to full ON
CALL LIGHT
Signaling
Frequency
20,000 kHz 3dB
Flashing Rate 3Hz 2 Hz
DIMENSION
3.468” H x 1.5” W x 3.0” D (13.21 x 3.81 x 7.62 centimeters)