Channel Step SelectionTuning steps are factory preset to default increments which are appropriate for thecountry to which this radio is exported. You may have a reason to use a different stepsize, however, and here is the procedure for changing the channel steps:1. Press and hold in the [MHz(SET)] key for one second,then rotate the DIAL knob to select “50 STEP”.2. P r e s s t h e [ M H z ( S E T ) ] k e y, t h e n r o t a t e t h eD I A L k n o b t o s e l e c t t h e d e s i r e d s t e p s i z e(5/10/12.5/15/20/25/50/100 kHz).3. Press and hold in the [MHz(SET)] key for one second tosave your new setting and exit to normal operation.Display BrightnessThe FT-2980R display illumination has been specially engineered to provide high visibilitywith minimal disruption of your “night vision” while you are driving. The brightness of thedisplay is manually adjustable, using the following procedure:1. Press and hold in the [MHz(SET)] key for one second,then rotate the DIAL knob to select “16 DIMMER”.2. Press the [MHz(SET)] key, then rotate the DIAL knob toselect a comfortable brightness level (LVL 0 - LVL10).3. Press and hold in the [MHz(SET)] key for one second tosave your new setting and exit to normal operation.RF SquelchA special RF Squelch feature is provided on this radio. This feature allows you to set thesquelch so that only signals exceeding a certain S-meter level will open the squelch.To set up the RF squelch circuit for operation, use the following procedure:1. Press and hold in the [MHz(SET)] key for one second,then rotate the DIAL knob to select “42 RF SQL”.2. Press the [MHz(SET)] key, then rotate the DIAL knob toselect the desired signal strength level for the squelchthreshold (S1 - S9 or OFF).3. Press and hold in the [MHz(SET)] key for one second tosave your new setting and exit to normal operation.The receiver’s squelch will open based on the highest level set by the twosquelch systems, “Noise Squelch” and “RF Squelch”. For example:1) If the Noise Squelch (SQL control) is set so that signals at a level of S-3 willopen the squelch, but the RF Squelch (Menu #42) is set to “S-9”, the squelchwill only open on signals which are S-9 or stronger on the S-meter.2) If the RF Squelch is set to “S-3”, but the Noise Squelch is set to a high levelwhich will only pass signals which are Full Scale on the S-meter, the squelchwill only open on signals which are Full Scale on the S-meter. In this case, theNoise Squelch overrides the action of the RF Squelch.18Advanced OperationFT-2980R Operating Manual