1. Hydrophone with Pre-Amplifier 1) Resonant Frequency: 150kHz(Nominal) 2) Usable Frequency Range: 350Hz to 190kHz 3) Pre-Amplifier Gain(Pre-Set): 10 to 40dB 4) Power Supply: 24Volts DC @<150mA 5) Operating Depth: 700 Meters 6) Cable Length: 10 meters standard |