DK140 – Recorder Beacon
Specifications
The DK140 is a Non-TSO version of the underwater acoustic locating beacons.
For TSO ULB products, please see the DK290 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
(160.5dB)
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
replaceable.
Storage Temperature
‐67°F to +160°F (‐55°C to +71°C)