Humminbird HELIX Series Operation Manual page 54

Show/Hide the Frequency Label
The Frequency Label displays the currently selected frequencies. See Set up Sonar.
1. Main Menu: Press the MENU key twice. Select the Sonar tab.
2. Select Frequency Label.
3. Select On (show) or Off (hide).
selected
display
frequency
Sonar (2D)
2D Sonar View with Frequency Label Turned On (HELIX 9 CHIRP SI GPS G2N)
selected
frequency
spectrum
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