GNS 530(A) Quick ReferenceFREQUENCY SELECTION5190-00181-01 Rev. GSelecting a frequency:1) If the tuning cursor is not currently in thedesired window (COM or VLOC), press thesmall left knob momentarily.2) Turn the large left knob to select the desiredmegahertz (MHz) value. For example, the ‘117’portion of the frequency ‘117.70’.3) Turn the small left knob to select the desiredkilohertz (kHz) value. For example, the ‘.70’portion of the frequency ‘117.70’.4) To activate the selected frequency, press theCOM Flip-flop Key for COM frequencies, or theVLOC Flip-flop Key for VLOC frequencies.Quickly tuning and activating the 121.500Emergency ChannelPress and hold the COM Flip-flop Key forapproximately two seconds.dAtA eNtRyData is entered in the GPS Window using the large andsmall right knobs. The large right knob is used to movethe cursor about the page. The small right knob is usedto select individual characters for the highlighted cursorlocation. For example, to change the “N” in the followingillustration to a different character, turn the small rightknob.