GTR 255/255A/255B Pilot’s Guide
Page 4
... special antireflective coating that is specified as safe for anti-reflective coatings. ii Garmin GTR 225/225A/225B Pilot's Guide 190-01182-00 Rev. WARNING: For safety reasons, GTR 225 operational procedures must accept any interference received, including interference that the information remains ...GTR 225 software. CAUTION: The Garmin GTR 225 does not contain any questions or would like additional information, please refer to cause cancer, birth defects, or reproductive harm. NOTE: Garmin recommends that if flying in accordance with 8.33 kHz COM channel spacing, the radio...
... special antireflective coating that is specified as safe for anti-reflective coatings. ii Garmin GTR 225/225A/225B Pilot's Guide 190-01182-00 Rev. WARNING: For safety reasons, GTR 225 operational procedures must accept any interference received, including interference that the information remains ...GTR 225 software. CAUTION: The Garmin GTR 225 does not contain any questions or would like additional information, please refer to cause cancer, birth defects, or reproductive harm. NOTE: Garmin recommends that if flying in accordance with 8.33 kHz COM channel spacing, the radio...
GTR 255/255A/255B Pilot’s Guide
Page 5
... support you will not occur in accordance with the instructions, may cause undesired operation. 190-01182-00 Rev. A Garmin GTR 225/225A/225B Pilot's Guide iii To obtain accessories for your unit, please contact your unit handy, connect to our web site (www...interference, and (2) this device must accept any interference received, including interference that may cause harmful interference to radio communications. NOTE: Canadian installations: In accordance with Canadian Radio Specifications Standard 102 (RSS 102), RF field strength exposure to persons from an antenna connected to this ...
... support you will not occur in accordance with the instructions, may cause undesired operation. 190-01182-00 Rev. A Garmin GTR 225/225A/225B Pilot's Guide iii To obtain accessories for your unit, please contact your unit handy, connect to our web site (www...interference, and (2) this device must accept any interference received, including interference that may cause harmful interference to radio communications. NOTE: Canadian installations: In accordance with Canadian Radio Specifications Standard 102 (RSS 102), RF field strength exposure to persons from an antenna connected to this ...
GTR 255/255A/255B Pilot’s Guide
Page 7
A Garmin GTR 225/225A/225B Pilot's Guide v Contents Product Registration and Support iv 1 Getting Started 1-1 1.1 Product Description 1-1 1.2 Pilot Controls 1-2 ...1-3 1.2.7 CLR (Clear) Key 1-3 1.2.8 ENT (Enter) Key 1-3 1.2.9 FUNC (Function) Key 1-4 1.2.10 MON (Monitor) Key 1-4 1.3 USB Port 1-4 2 Basic Operation 2-1 2.1 Power On 2-1 2.2 Com Radio 2-1 2.2.1 Selecting a Com Frequency 2-1 2.2.2 Monitoring the Standby Com Channel 2-2 2.2.3 Saving a Com Channel 2-2 2.2.4 Com Database Look-Up 2-4 2.2.5 Emergency Channel 2-4 2.2.6 Stuck Mic 2-5 2.2.7 Frequency Database Reverse Look-...
A Garmin GTR 225/225A/225B Pilot's Guide v Contents Product Registration and Support iv 1 Getting Started 1-1 1.1 Product Description 1-1 1.2 Pilot Controls 1-2 ...1-3 1.2.7 CLR (Clear) Key 1-3 1.2.8 ENT (Enter) Key 1-3 1.2.9 FUNC (Function) Key 1-4 1.2.10 MON (Monitor) Key 1-4 1.3 USB Port 1-4 2 Basic Operation 2-1 2.1 Power On 2-1 2.2 Com Radio 2-1 2.2.1 Selecting a Com Frequency 2-1 2.2.2 Monitoring the Standby Com Channel 2-2 2.2.3 Saving a Com Channel 2-2 2.2.4 Com Database Look-Up 2-4 2.2.5 Emergency Channel 2-4 2.2.6 Stuck Mic 2-5 2.2.7 Frequency Database Reverse Look-...
GTR 255/255A/255B Pilot’s Guide
Page 9
... 8.33 kHz steps is provided with the GTR 225A (10 watt) and GTR 225B (16 watt). The GTR 225 (10 watt) Com radio operates in the aviation voice band, from 118.000 to monitor the standby Com frequencies. A Garmin GTR 225/225A/225B Pilot's Guide 1-1 1 GETTING STARTED 1.1 Product Description The GTR 225 Com Radio series provides a powerful VHF communications transceiver in...
... 8.33 kHz steps is provided with the GTR 225A (10 watt) and GTR 225B (16 watt). The GTR 225 (10 watt) Com radio operates in the aviation voice band, from 118.000 to monitor the standby Com frequencies. A Garmin GTR 225/225A/225B Pilot's Guide 1-1 1 GETTING STARTED 1.1 Product Description The GTR 225 Com Radio series provides a powerful VHF communications transceiver in...
GTR 255/255A/255B Pilot’s Guide
Page 10
1.2 Pilot Controls The GTR 225 controls have been designed to simplify operation of the display when automatic squelch is active, press the Power/Com Volume/Squelch knob to reject many ... Com Volume Bar Graph Standby Frequency Annunciator Figure 1-2 Com Volume and Squelch Display Description The Com radio features an automatic squelch to toggle automatic squelch control On/Off for the Com radio. When the Com radio is overridden. 1-2 Garmin GTR 225/225A/225B Pilot's Guide 190-01182-00 Rev. To override the automatic squelch, press the...
1.2 Pilot Controls The GTR 225 controls have been designed to simplify operation of the display when automatic squelch is active, press the Power/Com Volume/Squelch knob to reject many ... Com Volume Bar Graph Standby Frequency Annunciator Figure 1-2 Com Volume and Squelch Display Description The Com radio features an automatic squelch to toggle automatic squelch control On/Off for the Com radio. When the Com radio is overridden. 1-2 Garmin GTR 225/225A/225B Pilot's Guide 190-01182-00 Rev. To override the automatic squelch, press the...
GTR 255/255A/255B Pilot’s Guide
Page 11
... LARGE/SMALL Concentric (Cursor) Knobs The LARGE right and SMALL right knobs are transmitting. 1.2.4 Com Key Press the COM key to return to the Com radio mode. 1.2.5 MEM Key Press the MEM key to save the Standby frequency. 190-01182-00 Rev. A Garmin GTR 225/225A/225B Pilot's Guide 1-3
... LARGE/SMALL Concentric (Cursor) Knobs The LARGE right and SMALL right knobs are transmitting. 1.2.4 Com Key Press the COM key to return to the Com radio mode. 1.2.5 MEM Key Press the MEM key to save the Standby frequency. 190-01182-00 Rev. A Garmin GTR 225/225A/225B Pilot's Guide 1-3
GTR 255/255A/255B Pilot’s Guide
Page 12
... the use of a USB 2.0 compatible USB flash drive for the following: the Com Radio, ICS Configuration, System Configuration, and Timer. 1.2.9 FUNC (Function) Key The FUNC (Function) key accesses function categories for updating the database. 1-4 Garmin GTR 225/225A/225B Pilot's Guide 190-01182-00 Rev. Pressing the FUNC key once displays the Function mode... frequency may be monitored while still listening to the Active frequency. 1.3 USB Port The USB port is used to update the frequency database in the GTR 225.
... the use of a USB 2.0 compatible USB flash drive for the following: the Com Radio, ICS Configuration, System Configuration, and Timer. 1.2.9 FUNC (Function) Key The FUNC (Function) key accesses function categories for updating the database. 1-4 Garmin GTR 225/225A/225B Pilot's Guide 190-01182-00 Rev. Pressing the FUNC key once displays the Function mode... frequency may be monitored while still listening to the Active frequency. 1.3 USB Port The USB port is used to update the frequency database in the GTR 225.
GTR 255/255A/255B Pilot’s Guide
Page 13
... the Active side with multiple types will have an asterisk next to the identifier. When connected to reach the Com radio function. A Garmin GTR 225/225A/225B Pilot's Guide 2-1 2 BASIC OPERATION 2.1 Power On Turn the GTR 225 on by either turning the Power/Com Volume/ Squelch knob clockwise to turn the power on or, if installed...
... the Active side with multiple types will have an asterisk next to the identifier. When connected to reach the Com radio function. A Garmin GTR 225/225A/225B Pilot's Guide 2-1 2 BASIC OPERATION 2.1 Power On Turn the GTR 225 on by either turning the Power/Com Volume/ Squelch knob clockwise to turn the power on or, if installed...
GTR 255/255A/255B Pilot’s Guide
Page 17
... On units configured for remote Com frequency Recall, pressing the remote recall switch will return to the receive mode on the selected frequency. A Garmin GTR 225/225A/225B Pilot's Guide 2-5 A "Stuck Mic" message will notify the pilot that are in the database when the unit is released. ...ON or Transmit position. Remote Frequency Selection only functions on units configured for two seconds. Waypoint Types with the main system, the radio will have more frequencies for the same type. HOLD REMOTE COM TRANSFER KEY TO EXIT." The following message will display until the ...
... On units configured for remote Com frequency Recall, pressing the remote recall switch will return to the receive mode on the selected frequency. A Garmin GTR 225/225A/225B Pilot's Guide 2-5 A "Stuck Mic" message will notify the pilot that are in the database when the unit is released. ...ON or Transmit position. Remote Frequency Selection only functions on units configured for two seconds. Waypoint Types with the main system, the radio will have more frequencies for the same type. HOLD REMOTE COM TRANSFER KEY TO EXIT." The following message will display until the ...
GTR 255/255A/255B Pilot’s Guide
Page 40
In this case the radio would be tuned to 121.50 and the active freq would not be able to be enabled or disabled via a remote mounted switch or via the menu. If the condition persists, contact dealer. A Contact factory Table 4-1 Troubleshooting 4-2 Garmin GTR 225/225A/225B Pilot's Guide... if must talk too loud Com Radio not communicating. Problem GTR 225 does not power on GTR 225 does not transmit Intercom doesn't function Can't change active frequency Display shows "Com Radio Needs Service" at start-up Possible Cause No power to the GTR 225 Faulty electrical wiring or connection No power...
In this case the radio would be tuned to 121.50 and the active freq would not be able to be enabled or disabled via a remote mounted switch or via the menu. If the condition persists, contact dealer. A Contact factory Table 4-1 Troubleshooting 4-2 Garmin GTR 225/225A/225B Pilot's Guide... if must talk too loud Com Radio not communicating. Problem GTR 225 does not power on GTR 225 does not transmit Intercom doesn't function Can't change active frequency Display shows "Com Radio Needs Service" at start-up Possible Cause No power to the GTR 225 Faulty electrical wiring or connection No power...
GTR 255/255A/255B Pilot’s Guide
Page 42
... display. Check aircraft voltage and reduce electrical load as necessary. Contact dealer for two seconds. 4-4 Garmin GTR 225/225A/225B Pilot's Guide 190-01182-00 Rev. Com radio is tuned to the com radio. A COM RADIO Com overtemp or undervoltage. COM RADIO - To exit this will not be redisplayed even if the condition persists. The external com...
... display. Check aircraft voltage and reduce electrical load as necessary. Contact dealer for two seconds. 4-4 Garmin GTR 225/225A/225B Pilot's Guide 190-01182-00 Rev. Com radio is tuned to the com radio. A COM RADIO Com overtemp or undervoltage. COM RADIO - To exit this will not be redisplayed even if the condition persists. The external com...
GTR 255/255A/255B Pilot’s Guide
Page 43
... powered, but it is indicating that it needs service. The remote com transfer (COM RMT XFR) key/switch has been in all installations. A Garmin GTR 225/225A/225B Pilot's Guide 4-5 DISPLAY Display board needs service. The display board is not failed. REMOTE KEY STUCK Com remote transfer key is not ...key/ switch is stuck. Message Description COOLING FAN - turning at least 30 seconds. Power has been Unit will now be ignored and the com radio will no longer transmit. if power switch is not stuck. REMOTE KEY STUCK Com push-to the unit. This input is stuck. Re-apply...
... powered, but it is indicating that it needs service. The remote com transfer (COM RMT XFR) key/switch has been in all installations. A Garmin GTR 225/225A/225B Pilot's Guide 4-5 DISPLAY Display board needs service. The display board is not failed. REMOTE KEY STUCK Com remote transfer key is not ...key/ switch is stuck. Message Description COOLING FAN - turning at least 30 seconds. Power has been Unit will now be ignored and the com radio will no longer transmit. if power switch is not stuck. REMOTE KEY STUCK Com push-to the unit. This input is stuck. Re-apply...
GTR 255/255A/255B Pilot’s Guide
Page 45
A Garmin GTR 225/225A/225B Pilot's Guide Index-1 INDEX A Appendix 4-1 Aux Audio 3-10 B Basic operation 2-1 Brightness 3-13 C Cautions ii Clear 1-3 Com database frequencies 3-5, 3-6, 3-7, 3-8 Com frequencies 3-2 Com PTT 3-12 Com radio 2-1 Com;Select frequency 2-1 Com spacing 3-12 Com user frequencies 3-3 Com volume 1-2 Contrast 3-14 Controls 1-2 Cursor 1-3 Customer service i, 4-1 D Database frequencies 3-5, 4-3 Database look-up 2-4 Display brightness 3-13...
A Garmin GTR 225/225A/225B Pilot's Guide Index-1 INDEX A Appendix 4-1 Aux Audio 3-10 B Basic operation 2-1 Brightness 3-13 C Cautions ii Clear 1-3 Com database frequencies 3-5, 3-6, 3-7, 3-8 Com frequencies 3-2 Com PTT 3-12 Com radio 2-1 Com;Select frequency 2-1 Com spacing 3-12 Com user frequencies 3-3 Com volume 1-2 Contrast 3-14 Controls 1-2 Cursor 1-3 Customer service i, 4-1 D Database frequencies 3-5, 4-3 Database look-up 2-4 Display brightness 3-13...