Icom IC-746PRO Manual page 58

Auto Tuning Steps
• This item sets the auto tuning step function. When rotating the tuning
dial rapidly, the tuning step automatically changes several times as
selected.
– There are 2 type of auto tuning steps: HIGH (Fastest) and LOW (Faster).
• HIGH : Auto tuning step is turned ON. Approx. 5 times fastest tuning step
during rapid rotation (default)
• LOW : Auto tuning step is turned ON. Approx. 2 times faster tuning step
during rapid rotation
• OFF : Auto tuning step is turned OFF.