Flasher type fish sonar

Details Flasher type fish sonar Flasher type fish sonar

1998-10-23

1999-10-26

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

367109, G01S 1596

Patent

active

059739975

ABSTRACT:
An ultrasonic wave having a narrow directive angle and an ultrasonic wave having a wide directive angle are transmitted in water by two ultrasonic transducers, echo signals to the ultrasonic waves having the narrow and wide angles are displayed by the two luminous elements in unity in a flasher display, whereby the condition of fishes in the water can be seen widely.

REFERENCES:
patent: 3964012 (1976-06-01), Yamamoto et al.
patent: 5065371 (1991-11-01), Leavell et al.

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