5FT-90R OPERATING MANUALá ButtonThis button selects the items to be displayed on the bottom line of the LCD:• Functions of the keys below the display;• DC Voltage; or• Frequency Control Mode.Press and hold in this button for one second to activate the SMART SEARCHT Mfeature.à PWR SwitchThis is the main “ON/OFF” switch for the transceiver.â MAIN DIAL KnobThis 20-position detented rotary switch is the main tuning dial for the trans-ceiver. It is used for most tuning, memory selection, and function setting taskson the transceiver.Front Panel Controls & Switches