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underwater communication

  1. J

    Designing a Low-cost USBL position system

    I would like to build an USBL (Ultr-Short Basline) system to localise an underwater object (an AUV, for exemple). However, it's hard to find low-cost parts to build this system. Could anyone recommend to me a supplier for low-cost (<200$) hydrophones and underwater transducers/transponders please?
  2. J

    Achieving a transmission data underwater at 100 mts depth

    I need to develop a device that should transmit its position and some telemetry data underwater at a maximum depth of 100 m. Considering that RF waves don't propagate well underwater, I guess I'll have to use acoustics as solution. However, I have no idea what kind of material (Tx/Rx) I should...

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