The DK140 is a Non-TSO version of the underwater acoustic locating beacons.

For TSO ULB products, please see the DK120/90 information page.

Beacon Specifications

Operating Frequency:37.5 kHz ± 1 kHz
Operating Depth:Surface to 20,000 feet (6096 meters)
Pulse Length:9 milliseconds minimum
Pulse Repetition Rate:0.9 pulse/second minimum
Useful Life:6 years
Operating Life:30 days (minimum)
Acoustic Output, Initial:1060 dynes/cm2rms pressure at 1 meter
Acoustic Output, After 30 Days:700 dynes/cm2rms pressure at 1 meter
(157.0 dB)
Operating Temperature:+28°F to +100°F (‐2.2°C to +37.8°C)
Actuation:Fresh or salt water
Radiation Pattern:Rated output over 80 percent of sphere
Size:1.30" diameter x 2.97" long
(3.30 cm diameter 7.54 cm long)
Weight:Less than 4.9 oz (139 grams) (including battery)
Material:7075‐T6 Aluminum, chromate (clear) finish
Power Source:Lithium Battery, single cell. Factory or user
Storage Temperature:‐67°F to +185°F (‐55°C to +85°C)