Low cost Sonar telemetry transmitter and receiver for use on fishing trawls etc.

Sonar receiver PCB for OEM applications converts the signal from an underwater transducer into a digital signal that can be read by a microcontroller etc. Very low power consumption, (0.15mA).

Sub sea electronics package containing a high accuracy altimeter and depth sensor to measure height and depth of the vehicle. The data is supplied as standard RS232 serial data for input to the vehicle or via optional modem for transmitting the data on long cables using the same 2 electrical cores as the power. An optional distance run wheel can also be input to the electronics package for measuring distance travelled along the sea bed