Frequency Selector
Rotate - selects frequency in the STANDBY frequency indicator:
- The first digit is always 1.
- The outer selector changes second and third digits in 1
MHz increments.
- The inner selector changes fourth, fifth, and sixth digits in
8.33 KHz increments.
- For airplanes with ACARS, tuning above maximum or below
minimum frequency displays DATA in Frequency Indicator.