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SQ26-08 product photo for maximum enlargement, click on thumbnail; --- for medium-sized, scroll down

The Sensor Technology SQ26-08 has a very slick, compact design, and is a component in several Cetacean Research™ hydrophone systems, and is also sold separately. The SQ26-08 is a general purpose hydrophone ideal for whale watching, full audio-band signal detection, and mobile underwater recording; except that it can NOT be used as a stand-alone hydrophone.

The SQ26-08 hydrophone must be used with a recording device or preamplifier that has a bias powered (a.k.a. plug-in powered) microphone input, and thus is included in the following Cetacean Research™ underwater recording systems:

Frequency Range [kHz]		0.020 to 50
Transducer Sensitivity* [dB, re 1V/µPa]		-194
Preamplifier Gain [dB]		25
Effective Sensitivity* [dB, re 1V/µPa]		-169
SPL Equiv. Self Noise at 1kHz [dB, re 1µPa/√Hz]		57
Power Requirement [Vdc]		2 to 5
RMS Overload Acoustic Pressure [dB, re 1µPa]		154
Maximum Operating Depth [m]		100
Operating Temperature Range [ºC]		-25 to 60
Dimensions [mm]		70 L x 32 dia.
Shielded Cable Length [m] cable includes 3.5mm stereo phone plug		10 or 30
Directionality		omnidirectional below 10kHz
Battery / Connector box		N/A - powered by most of the plug-in powered microphone inputs, such as the M-Audio MicroTrack
*  Transducer Sensitivity + Preamplifier Gain = Effective Sensitivity.