Icom IC-746PRO Manual page 63

• Shifts the receive frequency without changing the transmit frequency
while the RIT function is ON.
– Rotate the control clockwise to increase the frequency, or rotate the
control counterclockwise to decrease the frequency.
– The shift frequency range is ±9.99 kHz in 10 Hz steps (or ±9.999 kHz in 1
Hz steps).
RIT Knob