PBC-JTMF-1A Helmet

This product adopts the dynamoelectric laryngeal transmitter and the high- resistance receiver. It is the communication audio terminal for aviators which are used for many types of planes like bombers, fighter plane, trainers, transporters, etc. It can be equipped with the oxygen mask.
 
Specifications:
Dimension: 290mm×240mm×210mm 
Weight: Summer helmet ≤750g; winter helmet ≤700g 
Operating temperature:-40℃～55℃ 
Transmitting power supply voltage: 9V DC 
Transmitting sensitivity:≥500mV/3.16m/s2 (200Hz～4000Hz) 
Diagnostic rhyme test of Chinese articulation: ≥75% 
Receiving sensitivity: ≥95dB/mW (200～4000Hz) 
Ear-cup sound insulation amount: ≥20dB (125Hz～8000Hz)