Echo-sounders » Dual Frequency Transducers » Model 77 Series
Model 77 Series
- DUAL FREQUENCY
- 30 LF / HF COMBINATIONS
- FISHING, NAVIGATION & SURVEYING
- HULL MOUNTING
- LOW SIDE-LOBES
- ROBUST NYLON HOUSING
The 77 SERIES hull-mounted dual frequency transducers offer both high and low frequency sections combined in a single unit.
The ability to specify a wide combination of frequencies in the same basic unit provides the echo sounder manufacturer and hydrographer with the flexibility to select a system to meet the desired survey requirements of resolution, range, silt penetration and beam pattern.
The high impact strength nylon body provides a mechanically robust and corrosion free transducer.
The 77 SERIES is available with or without acoustic calibration, traceable to National Standards. Transducer impedance can be adjusted to suit customers specification – see specification tables below.
Technical Specification
Resonant Frequency (Nominal) |
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Beam Pattern |
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Bandwidth |
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Transmit Sensitivity |
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Receive Sensitivity |
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Nominal Impedance |
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Transmit Voltage / Duty Cycle (Max) |
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Mechanical Specification
Cable Type |
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Operating Depth |
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Cable Length |
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Weight Air/Water (including 10m cable) |
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Connector |
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Operating Temperature |
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Storage Temperature |
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