Humminbird 4089701 Beam Select, 83 kHz, Beam Select, When set to, (561, 570, 561 DI, 570 DI, and 571 HD DI only), allow you to choose 200/83 kHz, 200 kHz, or 83 kHz

Beam Select(561, 570, 561 DI, 570 DI, and 571 HD DI only)

Settings: DualBeam PLUS™: 200/83 kHz, 200 kHz, 83 kHz;

Down Imaging™: 200 kHz, 455 kHz; Default = 200 kHz

Beam Select sets which sonar returns from the transducer will be displayed on the screen. The available beam frequencie s are determined by your Humminbird® model.

DualBeam PLUS™ models (561, 570) allow you to choose 200/83 kHz, 200 kHz, or 83 kHz.

•When set to 200/83 kHz, the returns from both beams are blended by starting with the 83 kHz wide beam return, dimming it, and then overlaying it with the 200 kHz narrow beam return. The darker 200 kHz narrow beam sonar returns will stand out from the paler 83 kHz wide beam sonar returns. The Split Sonar View continues to display the sonar returns from each beam in their respective windows. The blended information is shown in the Sonar View, Sonar Zoom View, and the Big Digits View. The RTS Window™ in the Sonar View will only show the returns from the 200 kHz narrow beam.

•When set to 200 kHz, only the returns from the 200 kHz narrow beam will be displayed in the Sonar View, the Sonar Zoom View, and the Big Digits View. The Split Sonar View will continue to display returns from both beams in their respective windows. The RTS Window™ in the Sonar View will display the returns from the 200 kHz narrow beam.

•When set to 83 kHz, the returns from the 83 kHz wide beam will be displayed in the Sonar View, the Sonar Zoom View, and the Big Digits View. The Split Sonar View will continue to display returns from both beams in their respective windows. The RTS Window™ will display the returns from the 83 kHz wide beam.

52 Sonar Menu Tab