The DH-4 is the primary hydrophone for manual/active tracking.
The DH-4 provides the greatest range and precision in locating transmitters from 30kHz to 100kHz. The parabolic reflector provides 16db of gain over a comparable omnidirectional hydrophone, and yields a calculated DI of nearly 25db, reducing the effect of environmental noise. The DH-4 is the primary hydrophone for manual/active tracking.
Sensitivity: -84 dBV ref 1 uBar (-184dBV ref 1 uPascal).
Beam Width: +/-6 degrees at half power points.
Shaft Length: User supplies mounting shaft. (1 inch PVC)
Output: BNC connector.
Cable: Replaceable 10’ RG-58 C/U.
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