YAESU FT-991
Turning on the Digital Squelch
"Code and Break function"
Using the "Touch screen and Multi knob".
1. Press "MENU"
2. Rotate the "MULTI" knob to "Menu 088"
3. Press "SELECT"
4. Rotate the "MULTI" knob to "BREAK"
5. Press "ENTER"
6. Rotate the "MULTI" knob to "Menu 089"
7. Press "SELECT"
8. Rotate the "MULTI" knob to "73"
9. Press "ENTER"
8. Press "BACK"