Once the display is turned on it will display the test sequence and then display the current depth.
Depth finder for floor.
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Establish a depth reading baseline anchor moor the vessel in a body of water away from other boat traffic.
Ricank portable fish finder with hard travel case contour readout handheld fishfinder depth with sonar sensor transducer and lcd display sensitivity options fish depth finder with fishfinders case price 129.
The hawkeye depthtrax 1h is a handheld depth finder that is waterproof down to 200 feet and delivers accurate depth readings from 1 5 to 400 feet.
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The device uses hawkeye s depthtrax sonar where multiple 300 watt 200 khz sonar pulses are emitted four times per second at a 14 degree beam angle to continually update the readings.
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Plug the transducer cable into the back of the depth sounder display and turn the display on.
One of the first practical depth sounders the so called hayes sonic depth finder developed by the u s.
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Navy in 1919 consisted of 1 a device to generate and send sound waves to the ocean floor and receive the reflected waves and 2 a timer calibrated at the speed of sound in seawater that directly indicated water depth.