Wireless: PTX-3 IFB transmitter front panel controls
OFF/TUNE/XMIT SwitchOFF - Turns the unit off. TUNE - Allows all functions of the transmitter to be set via the up and down buttons. XMIT - Normal operating position. The operating frequency may not be changed in this mode, though other settings may be changed, so long as the unit isn’t "Locked." MENU - allows the user to navigate to the frequency window, audio gain window and audio setup windows which control various audio compatibility options. For details see the PTX-3 user manual attached to this solution.