Onkyo TX-NR 838 Manual page 3

2. Press D.TUN.
3. Using the number buttons, enter the frequency of the radio station within
8 seconds.
To enter 87.5 (FM), for example, press 8, 7, 5, or 8, 7, 5, 0. If you
entered a wrong number, you can enter a correct one after 8 seconds.