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Earphone Characteristics
Type: Rocking Armature DynamicInput Impedance: 150 ohm ± 15% @ 1KHzSensitivity (nominal): 102dBSPL ± 2dB/mW @ 1.2KHzFrequency Response: ± 10dB variation from 500Hz to 4000HzHarmonic Distortion: <1% @ 114dBSPL @1KHz
Microphone Characteristics
Type: Electret 20 meter submersible capsule requiring 1.3 to 10V DC supplyOutput Impedance: 2000 ohm nominalSensitivity (nominal): -30dBV ± 4dB at 1KHz re to 1V/PaFrequency Response: ± 1dB from 100Hz to 4KHz
PTT Switch Characteristics
Resistance, not pressed: Greater than 10M ohms at radio connectorResistance, pressed: Less than 10 ohms at radio connectorOperating Force: 3 to 5 lbs, 13.3 to 22.2 newtonsOperating Life: 500,000 cycles minimum
Environmental Characteristics
Immersion: IP68 (20 meters, 2 hour)
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