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USING THE 150SX
HOW SONAR WORKS
6
HOW SONAR WORKS
Your Humminbird unit uses sonar to
locate and define underwater objects,
define the bottom terrain, as well as
determine distance.
Sonar technology is based on sound
waves. Your Humminbird unit sends
out a sound wave signal. With this
signal it determines distance by
measuring the time between the
transmission of the sound wave and
when the sound wave is reflected off
an object. Your Humminbird uses the
reflected signal to interpret location,
size and composition of an object.
Sonar is very fast. A sound wave can travel from the surface to a depth of
240' (70m) and back again in less than
¹⁄₄ of a second. It is unlikely that
your boat can "outrun" this sonar signal.
The 150SX is a 200 kHz, single-beam fishfinder. The 200 kHz frequency
provides excellent sonar resolution (the ability to distinguish small returns
or returns which are close to the bottom), while providing depth
capabilities to 600’ (185m). The shape of the sonar beam is symmetrical
and covers an area of approximately 24 degrees side to side and front
to rear.
Actual depth capability depends on factors such as bottom hardness, water
conditions, and transducer installation. Units will typically read to deeper
depths in fresh water than in salt water
SIMULATOR OPERATION
The 150SX contains a simulator that allows you to use the unit as if you are
on the water. The simulator is invaluable for learning how to operate the
150SX.