Humminbird PIRANHAMAX 160 - Manual (Page 35)

Single Beam Sonar
The PiranhaMAX™150 and PiranhaMAX™190c use a 200 kHz single beam
sonar system with a 20° area of coverage. Boat speed, wave action, bottom
hardness, water conditions and transducer installation can all affect depth
capability.
Dual Beam Sonar
The PiranhaMAX™160 and PiranhaMAX™170 use a 200/83 kHz dual beam
sonar system with a wide (60°) area of coverage. Dual Beam sonar is optimized
to show the greatest bottom definition using a narrow (20°) beam yet can still
indicate fish found in the wide (60°) beam when the Fish ID+
TM feature is turned
on. Dual Beam is ideal for a wide range of conditions - from shallow to very deep
water in both fresh and salt water. Boat speed, wave action, bottom hardness,
water conditions and transducer installation can all affect depth capability.
Tri Beam Sonar
The PiranhaMAX™180 uses two frequencies and three different sonar
elements, one narrow, two wide, that transmit signals to the left, right and
straight down from your boat. The downward beam is 200 kHz with a 20° area
of coverage. This beam maintains a continuous digital depth readout from the
bottom directly beneath your boat. The side beams are 455 kHz with a 35°
area of coverage, for a total 90° area of coverage. Boat speed, wave action,
bottom hardness, water conditions, and transducer installation can all affect
depth capability.
29