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UNDERWATER LOCATOR BEACON (ULB) /with field replaceable battery (6-year battery life) DK-140

UNDERWATER LOCATOR BEACON (ULB) /with field replaceable battery (6-year battery life) DK-140
Out of Stock - On Backorder
UNDERWATER LOCATOR BEACON (ULB) /with field replaceable battery (6-year battery life) DK-140
UNDERWATER LOCATOR BEACON (ULB) /with field replaceable battery (6-year battery life) DK-140
UNDERWATER LOCATOR BEACON (ULB) /with field replaceable battery (6-year battery life)

The DK-140 underwater locating beacon can operate to a depth of 20,000 feet and is authorize by the FAA. Duration of battery life in-use is six years while its operating life has a 30-day minimum range; it boasts a field-replaceable battery.


  • Improved low voltage technology
  • Six year, non-hazardous, single cell battery with a solid cathode chemistry that provides a less active and more stable chemistry
  • Durable construction and highly reliable design
  • Meets or exceeds all the FAA requirements without requiring modifications

Product Codes

Mfr Part No:DK-140
SCHEDULE B CODE:8506.50.0000

Hazmat charges may apply


Weight: less than 4.9 oz (139 g), including batteryDimensions: 1.3 x 2.97 in (3.3 x 7.54 cm)Operation Frequency: 37.5 kHz ±1 kHzOperation Depth: surface to 20,000 feet (6,096 m)Pulse Length: 9 milli-seconds, minimumPulse Repeat Rate: 0.9 pulse/second, minimumUseful Life: 6 yearsOperating Life: 30 days, minimumAcoustic Output, Initial: 1,060 dynes/cm2 rms pressure @ 1 meter (160.5 dB)Acoustic Output (after 30 days): 700 dynes/cm2 rms pressure @ 1 meter (157.0 dB)Operating Temperature: 28°F to 100°F (-2.2°C to 37.8°C)Storage Temperature: 67°F to 185°F (-55°C to 85°C)Actuation: fresh or salt waterRadiation Pattern: rated output over 80% of sphereMaterial: 7075-T6 aluminum, chromate (clear) finishPower Source: Lithium Battery, single cell DK120/DK140: User replaceable DK100/DK130: Factory replaceable

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  • Stock: Out of Stock - On Backorder
  • Manufacturer Part #: DK-140
$4,945.99

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