| 摘要 |
A combination ear protector and communications headset particularly adapted to the rugged, lightweight, convenience needs of aircraft ground crew members. The headset includes a noise cancelling microphone mounted directly on the headband where disposition either before the user's mouth or in an out-of-the-way on-top-of-the-head position is possible. In the ear protection only mode of use, the headset is disclosed to be optimally clean and unencumbered, but is quickly and easily convertable to communications usage.
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