DK120-90 Underwater Acoustic Beacon

DUKANE

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EDMO # DK120-90

MFR Part # DK120-90

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Product Description

The DK120/90 is a battery operated underwater acoustic pulse generator (beacon / pinger) that is activated when the water switch is immersed in either fresh or salt water. Providing a minimum of 90 days of uninterrupted operation once activated, this beacon meets or exceeds all FAA requirements. This beacon can assist in location of CVR/FDR devices.

Features

Watertight aluminum case
Capable of operation at depths of up to 20,000 feet
Detectable at a range of 2000 to 4000 yards
Sustained pressure up to 8700 psi
Water switch actuation initiates beacon operation upon immersion in either fresh or salt water
The battery used to power the DK120/90 will sustain beacon operation for a minimum of 90 days
Acoustic output of 160 dB with an operating frequency of 37.5 kHz
The water switch is part of a low current triggering circuit
The generated pulses are approximately 10 ms in duration, and occur about once per 1 second

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Specifications

Weight:

Beacon - 6.7 oz Mount - 6 oz
Dimensions:

1.30in diameter x 3.92in length
Operating Frequency:

37.5 kHz ± 1 kHz
Operating Depth:

Surface to 20,000 feet (6096 meters)
Pulse Length:

9.0 milliseconds Minimum
Pulse Repetition Rate:

Not less than 0.9 Pulse/Sec.
Operating Life:

90 Days (Minimum)
Battery Life In Beacon:

7 Years
Acoustic Output, Initial:

1060 dynes/cm Rms. pressure at 1 meter (160.5dB)
Acoustic Output After 90 Days:

700 dynes/cm2 Rms. pressure at 1 meter (157.0dB)
Operating Temperature Range:

+28°F (-2.2°C) to +100°F (+37.8°C)
Radiation Pattern:

Rated output over 80 percent of sphere
FAA & EASA Authorized:

TSO-C121b / ETSO-C121b, TSO- C142a / ETSO-C142a