AM/FM Switching

The AM/FM button is a sequencing (push-push) type that toggles between the AM, FM1, and FM2 bands

The button is active anytime that the unit is on.
^ Pressing the AM/FM button while the radio is in the receiver mode changes the tuning to the frequency which was last selected on the next band.
^ Pressing the AM/FM button while the radio is in the playback mode causes the unit to switch into the receiver mode at the last selected band and frequency.

The following band switching sequence is from an initial state of FM1:
^ The first push toggles the receiver to FM2.
^ The second push toggles the receiver to AM.
^ The third push toggles the receiver back to FM1.