Boat Transducers, Depth Sounders and Accessories

How Does a Transducer Work?

The easiest way to understand how a transducer functions is to think of it as a speaker and a microphone built into one unit. A transducer receives sequences of high-voltage electrical pulses called transmit pulses from the echosounder. Just like the stereo speakers at home, the transducer then converts the transmit pulses into sound. The sound travels through the water as pressure waves. When a wave strikes an object like a weed, a rock, a fish, or the bottom, the wave is reflected. The wave is said to echo—just as your voice will echo off a canyon wall. When the reflected sound wave returns the transducer acts as a microphone. It receives the sound wave during the time between each transmit pulse and converts it back into electrical energy. A transducer will spend about 1% of its time transmitting and 99% of its time quietly listening for echoes. Remember, however, that these periods of time are measured in microseconds, so the time between pulses is very short. The echosounder can calculate the time difference between a transmit pulse and the return echo and then display this information on the screen in a way that can be easily understood by the user.

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  1. Airmar Boat Thru Hull Transducer 010-11939-21 | Garmin Tilted Element
    Airmar Boat Thru Hull Transducer 010-11939-21 | Garmin Tilted Element
    GLS Stock #: 1089189-FC763
    $899.95 MSRP: $1,149.99
  2. Hydra Sports HS41414537 Garmin / Airmar M260 Black / Yellow Boat In-hull Removable Transducer 010-10641-00
    Garmin Boat In Hull Transducer 010-10641-00 | M260 50kHz 19 Degree
    GLS Stock #: 1060411-GD528
    $774.95 MSRP: $996.95
  3. Airmar Boat Thru Hull Transducer 000-12492-001 | B75M CHIRP 0 Degree
    Airmar Boat Thru Hull Transducer 000-12492-001 | B75M CHIRP 0 Degree
    GLS Stock #: 1085080-FE461
    $499.95 MSRP: $674.93
  4. Airmar Boat Multisensor Transducer 000-11852-001 | IDST800L 235kHz
    Airmar Boat Multisensor Transducer 000-11852-001 | IDST800L 235kHz
    GLS Stock #: 8701505-5C683
    $499.95 MSRP: $599.00
  5. Airmar Boat Transducer TD1014 | Long Stem Bronze Thru Hull 31-705-1-01
    Airmar Boat Transducer TD1014 | Long Stem Bronze Thru Hull 31-705-1-01
    GLS Stock #: 1035752-XIN3780FJ948
    $299.95 MSRP: $404.93
  6. Humminbird Boat Thru Hull Transducer 710267-1 | XPTH 14 20 MSI T
    Humminbird Boat Thru Hull Transducer 710267-1 | XPTH 14 20 MSI T
    GLS Stock #: 7102488-FF861
    $279.95 MSRP: $381.88
  7. Lowrance Boat Temperature Fluid Sensor 032-22507-02 | Thru Hull (Kit)
    Lowrance Boat Temperature Fluid Sensor 032-22507-02 | Thru Hull (Kit)
    GLS Stock #: 7102348-AZ509
    $249.95 MSRP: $337.43
  8. Evinrude Johnson Boat Multi-Sensor Triducer 763440 | 235 kHz (Kit)
    Evinrude Johnson Boat Multi-Sensor Triducer 763440 | 235 kHz (Kit)
    GLS Stock #: 1020010-FD783
    $249.95 MSRP: $332.97
  9. Airmar Boat Transducer 31-556-3-02 | Carver Yachts 50/200 kHz B60-20
    Airmar Boat Transducer 31-556-3-02 | Carver Yachts 50/200 kHz B60-20
    GLS Stock #: 8700717-5F475
    $234.95 MSRP: $299.99
  10. Airmar Boat Transom Mount Triducer 44-205-2-02 | 235 kHz P39
    Airmar Boat Transom Mount Triducer 44-205-2-02 | 235 kHz P39
    GLS Stock #: 1094847-FE561
    $226.95 MSRP: $306.00
  11. Airmar Boat Thru Hull Transducer 010-10982-21 | B60 Tilted 8-Pin Bronze
    Airmar Boat Thru Hull Transducer 010-10982-21 | B60 Tilted 8-Pin Bronze
    GLS Stock #: 1089148-XIN3590GB645
    $224.95 MSRP: $299.99
  12. Raymarine Boat CHIRP Sonar Transducer E70341 | CPT-S 20 Degree Bronze
    Raymarine Boat CHIRP Sonar Transducer E70341 | CPT-S 20 Degree Bronze
    GLS Stock #: 1090687-XIN3700PB208
    $199.95 MSRP: $269.99
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