Page 23FT D X 1200 O PERA T ING M ANUALfront panel controls & switches[MODE] SwitchThis button selects the operating mode. The selec-tions available are:LSB à CW (USB) à RTTY (LSB) àà DATA (LSB) à AM à LSB àRepeated presses of this button steps through theavailable selections.Pressing and holding this button will toggle to thealternate mode. In the AM mode, a long press willtoggle between the AM and FM mode.For example, In the LSB or USB modes, a longpress of this button toggles between “LSB” and“USB” mode.[FAST] SwitchPressing this button will change the tuning of theMain Tuning Dial knob (VFO-A) to a higher steprate.When this function is activated, the “FAST” indica-tor in the LED indicators area illuminates.[LOCK] SwitchThis button toggles locking on/off for the Main Tun-ing Dial knob (VFO-A). With “Lock” on, the MainTuning Dial knob can still be turned, but the fre-quency will not change, and the “LOCK” indicatorin the LED indicators area illuminates.Main Tuning Dial KnobThis large knob adjusts the operating frequency ofVFO-A. Clockwise rotation of this knob increasesthe frequency. Default tuning increments are 10 Hz(CW, SSB), 50 Hz (RTTY/DATA), 100 Hz (AM/FM). When the [FAST] button is pressed, the tuningsteps increases. The available steps are:operAting ModeLSB/USB/CWAM/FMRTTY/DATA1 Step10 Hz (100 Hz)100 Hz (1 kHz)5 Hz (100 Hz)1 diAl rotAtion10 kHz (100 kHz)100 kHz (1 MHz)5 kHz (100 kHz)Numbers in parentheses indicate steps when the [FAST] button is On.A dvice :The tuning steps for the Main Tuning Dial knobare set, at the factory, to: 10 Hz (SSB, CW), 50 Hz(RTTY/DATA) and 100 Hz (AM/FM) per step. ViaMenu item “ 151 CW DIAL STEP” to “155 SSBDIAL STEP”, however, you may change these settingsto 1 or 5 Hz (SSB, CW), 1 or 10 Hz (RTTY, DATA),and 10 Hz (AM, FM) instead.