UH701 Under-the-Helmet

5 ft. coil cable terminating in 3-conductor PJ-051 style plug
Yellow latching Push-to-Talk (PTT) button for hands-free communication
Flightcom's exclusive moisture lock microphone includes a water resistant membrane
Detent-volume control adjusts accurately for volume preference
Foam ear seals remain comfortable even after hours of continuous use
Mic muff improves clarity by eliminating wind noise and has a retaining o-ring
Boom rotates 180 degrees to allow headset operation with right or left hand
Secure PTT button located on the dome requires a solid push to activate, eliminating the chance of accidental transmissions
Replaceable mic assembly

Headsets

Sensitivity:	104dB re .0002 microbar @ 1000 Hz, 1 mW
Frequency Response:	100-17,000 Hz +5 dB in 6 cc coupler
Impedance:	150 ohms nominal
Weight	without cable: 15.9 oz.
NRR:	24dB

Microphone

DC Bias Supply:	8-16 volts, not polarity sensitive
Source Resistance:	220 to 2200 ohms
Output Voltage:	370 mV @ 114 SPL re .0002 microbar
Frequency Response:	Optimized for speech clarity and noise reduction
Max. Amb. Noise Level:	125dB SPL re .0002 microbar

Intercom Only : Yellow PTT
The FH701, FH702, FH703 and UH701 headsets have a yellow PTT button on the ear dome. Press and release this button to activate the microphone for intercom communication. Press and release the button again to turn the microphone off.

Manual
Deicing Brochure