Japan Radio Company (JRC) is a world leading marine electronics
manufacturer specializing in commercial navigation equipments.
The JRC Alphatron Marine navigational echo sounders have highly
accurate and reliable sounding performance.
Equipped with specialized signal processing circuits and a time
line display the sounder can become a fish finder. Carried to
its limit, the fish finder can become undersea radar, searching
through all or any part of a 360-degree azimuth and sweeping
from straight down to horizontal in its search for underwater
objects, including fish.