Overview

• PNR Helicopter Headset 
  Helicopter Use U174/U Plug
• Super Soft Double Foam Head Pad
• Noise-canceling electret Microphone
• Strong Steel Boom for perfect microphone placement
• Easy-to-wear super soft silicone gel ear seals
• Headband Size Adjustment
• Coiled cord from headset to molded plug, 70CM
• Assembled strictly following the FAA TSO standards
• Noise Reduction Ratings (NRR):24dB

Specifications

Headphone:
Type: Dynamic (F50)
Frequency Response:100Hz to 8 kHz
Sensitivity:95+/-5 dB SPL (1 kHz, 1 mW input per earcup
side) full volume on ear simulator
Impedance:150 ohms (300 ohms each; wired in parallel)
Rate Input:100mW
Max. Input: 250mW
Microphone and Amplifier
Element Type: Noise-canceling electret
Frequency Response:100Hz to 5 kHz
Operating Voltage (supplied by aircraft ):8-32 Volts DC
Matching Impedance: 150-1000 ohms
Sensitivity:-33+/-4 dB
(ref: 0dB SPL=20.0uPa at 1 kHz with 10 Vdc 150 ohms AC
load)

General:
Operating Temperature: -20 to 70°C
Cordage:Coiled cord from headset to molded plug, 70CM
Intercom Connections Plug: U174/U
Weights: 570g
Noise Reduction Specifications:
Attenuation Frequency Band: 20Hz~20KHz
Main Attenuation Frequency Band: 20Hz~600Hz
Attenuation Capability: 20~24dB
Power Consumption: 30 mW
Headset size range Height: 10 to 14 cm