Garmin GTN 750 Pilot's Guide - Page 62

3.1 Foreword Volume Com radio volume is adjusted using the Volume knob. Turn the Volume Getting Started knob clockwise to increase volume, or counterclockwise to decrease volume. The level will be maintained until changed or power is cycled. Audio & Xpdr Ctrl 1. Turn the Volume knob to set the Com volume. Com/Nav FPL Direct-To 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 Proc selected level and will disappear a few seconds after releasing Charts the Volume knob. 3.2 Squelch Wpt Info The Com radio features an automatic squelch to reject many localized noise Map 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. Traffic To override the automatic squelch, press the Volume knob momentarily. Press the Volume knob again to return to automatic squelch operation. A "SQ" Terrain indication appears above the active Com frequency window in the upper left Weather corner of the display when automatic squelch is overridden. Com Control Text Nearest Receive Annunciation Music Squelch Annunciation Utilities Active Com Frequency (Touch to Flip/Flop) System Standby Com Frequency Messages Figure 3-4 Com Controls While receiving a station, an "RX" indication appears in the Com frequency Symbols window to the immediate right of "Com." A "TX" indication appears at this Appendix location while you are transmitting. Index 3-2 Garmin GTN 725/750 Pilot's Guide 190-01007-03 Rev. B