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Locking the Default Transmit channel
1. Press the [MENU] key to enter the menu.
2. Enter 53 on the numeric keypad to get to TMR-MR.
3. Press [MENU] to select.
4. Select OFF to turn off the TMR switching time
5. Press the [MENU] key to confirm.
6. Press the [EXIT/AB] key to exit the menu.
7. The radio will now only transmit on the Main channel selected (The Main Frequency indicator
arrow will be pointing at the display set as primary)
8. Setting a time value will allow the TX to occur on the last active channel. You must push the PTT
within the selected time for this to be possible.