APDD-500 B (Acoustic device of distant act) is a compact and easy-to-transport acoustic system of notification of distant radius of action. APDD-500 B provides the transfer of clear, intelligible speech. Narrow-directed beam allows to reach the distance up to 2000 m. Widened frequency diapason provides strict transfer of words and intonation.
Field of usage:
|Acoustic pressure||148 db at a distance of 1 m|
|Beam width||+/-15° @ 1 kHz/-3dB|
|Communicational options||Transfer of clear, intelligible speech at a distance of 2000 m|
|Material||Aluminum, polyethylene, steel.|