Garmin GTN 650 Pilot's Guide - Page 48

Foreword Getting Started Xpdr Ctrl 3.1 Volume Com radio volume is adjusted using the Volume knob. Turn the Volume knob clockwise to increase volume, or counterclockwise to decrease volume. The level will be maintained until changed or power is cycled. 1. Turn the Volume knob to set the Com volume. Com/Nav FPL Direct-To Proc Wpt Info Map Traffic Terrain Weather Nearest Music Utilities System Percent Of Maximum Volume Graphic Scale Showing Volume Figure 3-3 Com Volume Setting 2. A bar graph showing the relative volume level will indicate the selected level and will disappear a few seconds after releasing the Volume knob. 3.2 Squelch The Com radio features an automatic squelch to reject many localized noise sources. You may override the squelch function by pressing the Volume knob. This facilitates listening to a distant station or setting the desired volume level. To override the automatic squelch, press the Volume knob momentarily. Press the Volume knob again to return to automatic squelch operation. A "SQ" indication appears above the active Com frequency window in the upper left corner of the display when automatic squelch is overridden. Com Volume and Squelch Control Com Control Text Receive Annunciation Squelch Annunciation Active Com Frequency (Touch to Flip/Flop) Standby Com Frequency Messages Symbols Appendix Index Turn To Select MHz Turn To Select kHz Figure 3-4 Com Controls While receiving a station, an "RX" indication appears in the Com frequency window to the immediate right of "Com." A "TX" indication appears at this location while you are transmitting. 3-2 Garmin GTN 625/635/650 Pilot's Guide 190-01004-03 Rev. B