+44 (0)1262 490234    sales@neptune-sonar.co.uk

Communications » T204

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The T204 is designed for use in transponder beacons, tracking systems, acoustic release mechanisms and data communication systems. 

The anodised aluminium base incorporates a threaded fastening and 'O' ring seal allowing simple and direct mounting onto equipment or pressure housings. Washer and nut provided. 

The T204 is available with or without acoustic calibration, traceable to National Standards.

Technical Specification

Resonant Frequency (Nominal)
  • 55 kHz
Useful Frequency Range
  • 47 kHz to 62 kHz
Beam Pattern
  • Conical (See Graph)
Transmit Sensitivity
  • 156 dB re 1μPa/V @ 1m
Receive Sensitivity
  • -185 dB re 1V/μPa
Capacitance at 1 kHz (with 10m cable)
  • 12,000 pF
Transmit Voltage (Abs. Max)
  • 250 Vrms
Transmit Voltage / Duty Cycle (Max)
  • 250 Vrms @ 10%
  • 80 Vrms @ 100%

Mechanical Specification

Weight Air/Water (including 10m cable)
  • 0.17 kg / 0.1 kg
Operating Temperature
  • -5 to +40 °C
Storage Temperature
  • -40 to +80 °C
Cable Type
  • Ø4mm Polyvinyl Chloride Jacket, Screened Twisted Pair
Operating Depth
  • 1500m
Cable Length
  • 1m standard
  • (Additional lengths supplied to order)

Our Company

Formed in 1990, Neptune Sonar is now the leading company in underwater transducer technology, offering one of the world's largest and most comprehensive range of undersea defence and commercial transducers.

Based in the UK, our research and manufacturing operation is located on a 25-acre site in East Yorkshire. With a 60,000 square metre trials lake and a floating calibration laboratory, the site provides an extensive range of facilities supporting every aspect of acoustic transducer development from modelling and design to final product acceptance.

We also provide PZT components from our Zeus Piezoceramics facility in Hessle, East Yorkshire.

Neptune Sonar Limited
Kelk Lake
East Yorkshire
YO25 8HG

T: 01262 490234
E: sales@neptune-sonar.co.uk
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We design, manufacture and test acoustic sensors and electronics for...

  • Naval Defense
  • Maritime Security
  • Offshore Oil & Gas
  • Hydrographic Survey Industry
  • Oceanographic Science
  • Environmental Sectors
  • Aquaculture