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190-01182-00 Rev. D Garmin GTR 225/225A/225B Pilot’s Guide v
Table of Contents
1 GETTING STARTED ............................................................................................................ 1-1
1.1 Product Description ................................................................................... 1-1
1.2 Pilot Controls ............................................................................................ 1-2
1.3 USB Port ................................................................................................... 1-3
2 COM RADIO BASIC OPERATION ................................................................................ 2-1
2.1 Selecting a COM Frequency ...................................................................... 2-1
2.2 Monitoring the Standby COM Channel ..................................................... 2-2
2.3 Saving a COM Channel ............................................................................. 2-2
2.4 COM Database Look-Up ........................................................................... 2-4
2.5 Emergency Channel .................................................................................. 2-5
2.6 Stuck Mic .................................................................................................. 2-5
2.7 Frequency Database Reverse Look-Up ....................................................... 2-5
2.8 Remote Frequency Selection Control ......................................................... 2-6
3 FUNCTIONS ........................................................................................................................... 3-1
3.1 Functions .................................................................................................. 3-1
3.2 COM Frequencies ..................................................................................... 3-2
3.2.1 Recent COM Frequencies ................................................................... 3-2
3.2.2 COM User Frequencies ....................................................................... 3-2
3.2.3 COM Database Frequencies ................................................................ 3-4
3.2.4 COM Nearest Airports (APT) ............................................................... 3-5
3.2.5 COM Nearest Area Control Center (ACC) Frequencies ........................ 3-5
3.2.6 COM Nearest Flight Service Station (FSS) Frequencies ......................... 3-6
3.2.7 COM Nearest Weather (WX) Frequencies ........................................... 3-6
3.3 ICS Configuration ..................................................................................... 3-7
3.3.1 Adjust Intercom .................................................................................. 3-7
3.3.2 AUX Audio ......................................................................................... 3-8
3.3.3 Intercom On/Off ................................................................................. 3-8
3.3.4 Speaker On/Off .................................................................................. 3-9
3.4 System Configuration ............................................................................. 3-10
3.4.1 COM Spacing ................................................................................... 3-10
3.4.2 COM Sidetone (Software v2.10 or later) ........................................... 3-11
3.4.3 Display Brightness ............................................................................ 3-12
3.4.4 Display Contrast ............................................................................... 3-12
3.4.5 Database Info ................................................................................... 3-13
3.4.6 Load Database ................................................................................. 3-13
3.4.7 Software Version .............................................................................. 3-14
3.4.8 Serial Number .................................................................................. 3-14
3.5 Timers ..................................................................................................... 3-15
3.5.1 Setting Up the Count Down Timer ................................................... 3-15
3.5.2 Setting Up the Count Up Timer ........................................................ 3-15
3.5.3 Viewing Timers in the COM Display .................................................. 3-16
4 DATABASE INFORMATION ............................................................................................ 4-1
4.1 Downloading the Frequency Database ...................................................... 4-1
4.2 Updating the GTR 225 Frequency Database .............................................. 4-1
5 TROUBLESHOOTING ........................................................................................................ 5-1
5.1 Messages .................................................................................................. 5-3