Use the following steps to open your M802 to HF frequencies outside the Marine HF band:
1. Turn off the radio.
2. Press and hold the 2, MODE, and TX buttons.
3. While holding these three buttons, turn on the radio. Note: this needs to be done only once in the life of the radio to enter the open mode. If you wish to restore the radio to the marine band only, simply repeat steps 1-3 above.