Garmin GTR 225 Pilot's Manual
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Garmin GTR 225 Pilot's Manual

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GTR 225/225A/225B
Pilot's Guide

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Summary of Contents for Garmin GTR 225

  • Page 1 GTR 225/225A/225B Pilot’s Guide...
  • Page 2 Garmin. Garmin hereby grants permission to download a single copy of this manual and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed for personal...

  • Page 3: Limited Warranty

    (iv) damage caused by service performed by anyone who is not an authorized service provider of Garmin; or (v) damage to a product that has been modified or altered without the written permission of Garmin. In addition, Garmin reserves the right to refuse warranty claims against products or services that are obtained and/or used in contravention of the laws of any country.
  • Page 4 NOTE: All visual depictions contained within this document, including screen images of the GTR 225 bezel and displays, are subject to change and may not reflect the most current GTR 225 software. Depictions of equipment may differ slightly from the actual equipment.
  • Page 5 Operation of this device is subject to the following conditions: (1) This device may not cause harmful interference. (2) This device must accept any interference received, including interference that may cause undesired operation. 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...
  • Page 6 Product Registration and Support Help us better support you by completing your online registration today! Have the serial number of your product handy and connect to the Garmin website (www.garmin.com or https://fly.garmin.com/fly-garmin). Look for the Product Registration link on the Home page. Also, be sure to record your serial number in the space provided.

  • Page 7: Table Of Contents

    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................3-13 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...
  • Page 8 3.5.2 Setting Up the Count Up Timer ..........3-15 3.5.3 Viewing Timers in the COM Display ........... 3-16 DATABASE INFORMATION ..............4-1 Downloading the Frequency Database ..........4-1 Updating the GTR 225 Frequency Database .......... 4-1 TROUBLESHOOTING ................5-1 Messages .................... 5-3 Index .....................Index-1 190-01182-00 Rev.

  • Page 9: Getting Started

    1.1 Product Description The GTR 225 COM Radio series provides a powerful VHF communications transceiver. In addition to the traditional COM features, the GTR 225 series incorporates workload-reducing functions. The GTR 225 series monitors the standby COM frequencies and stores the user’...

  • Page 10: Pilot Controls

    1.2 Pilot Controls The GTR 225 controls are designed to simplify systems operation, minimize workload, and reduce time required to access functionality. Controls are comprised of dual knobs for frequency tuning, COM volume/squelch knob, and bezel keys. Power/COM Volume/Squelch Knob The Power/COM Volume/Squelch knob located in the top left corner of the bezel controls audio volume for the COM radio.

  • Page 11: Usb Port

    1.3 USB Port The USB port is used to update the frequency database in the GTR 225. NOTE: For updating the databases, Garmin recommends the use of a USB 2.0 compatible flash drive. The flash drive must be formatted as FAT32.
  • Page 12 This page intentionally left blank 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 13: Com Radio Basic Operation

    New frequencies are first selected as a standby frequency and then toggled to the active side with the FLIP/FLOP key. While viewing the standby frequency display, use the outer and inner knobs on the right side of the GTR 225 to select the desired frequency.

  • Page 14: Monitoring The Standby Com Channel

    5. Turn the outer knob to select the waypoint type. 6. Turn the inner knob to select the type from the list. 7. Press ENT to save displayed value. Press CLR to cancel the changes. 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...
  • Page 15 Automatic Terminal Information Service Automated Weather Observing System Aerodrome Traffic Frequency Arrival APPR Approach Departure Clearance CTAF Common Traffic Advisory Frequency Flight Service Station Remote Flight Service Station Mandatory Frequency Unicom Blank None 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 16: Com Database Look-Up

    6. The nearest station identifier will show for the selected frequency if connected to a GPS position source. 7. Press and release the FLIP/FLOP key to swap the active and standby frequencies. 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 17: Emergency Channel

    ON or Transmit position. If the microphone is keyed for longer than 35 seconds, the GTR 225 will return to the receive mode on the selected frequency. A “Stuck Mic” message will display until the transmit key is released. Alerts will display until the error clears or the user acknowledges it.

  • Page 18: Remote Frequency Selection Control

    The standby frequency isn’t activated until either the bezel-mounted COM FLIP/FLOP key or remote COM RMT XFR switch is pressed. Remote Frequency Selection only functions on units configured for a remote COM Frequency recall switch. 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 19: Functions

    Load Database Software Ver Serial Number Count Up Configuration ENT - Start/Stop CLR - Reset Count Down ENT - Start/Stop CLR - Reset Push CRSR - Settings ENT - Accept Functions Diagram 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 20: Com Frequencies

    NOTE: When switching from 8.33 kHz to 25 kHz mode, any 8.33 kHz-specific user frequencies will be deleted from the user frequency list. This only affects the user frequencies within the 8.33 kHz spectrum. Frequency Waypoint Name Waypoint Type COM User Frequencies 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...
  • Page 21 8. Turn the inner knob to select the kHz values. 9. Turn the outer knob to select the WPT field. 10. Turn the inner knob to select characters and turn the outer knob to move the cursor. 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 22: Com Database Frequencies

    COM User Frequency Type Selection 14. Press ENT to accept changes. Press CLR to cancel changes. 3.2.3 COM Database Frequencies The GTR 225 contains a database of COM frequencies that may be recalled by identifier. Character COM Database Frequencies 1. Press FUNC.

  • Page 23: Com Nearest Airports (Apt)

    Frequency Frequency Type Waypoint Identifier Selected COM Database Frequency 3.2.4 COM Nearest Airports (APT) When interfaced with a GPS receiver, the GTR 225 will report the twenty-five nearest airports (APT). Available Airports COM Nearest Airport Frequencies 1. Press FUNC. 2. Turn the inner knob to NEAREST APT.

  • Page 24: Com Nearest Flight Service Station (Fss) Frequencies

    Press CLR to return to the functions display. 3.2.6 COM Nearest Flight Service Station (FSS) Frequencies When interfaced with a GPS receiver, the GTR 225 will report the twenty-five nearest Flight Service Station (FSS) frequencies. Available FSS Frequencies COM Nearest Flight Service Station Frequencies 1.

  • Page 25: Ics Configuration

    5. Turn outer knob to MUTE ON RX (software v2.10 or later). 6. Turn inner knob to ON or OFF. To mute when a radio transmission is received, select ON. 7. Press ENT to save changes. Press CLR to cancel the changes. 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 26: Aux Audio

    Intercom On/Off function must be set to ON to make the Adjust Intercom function available. Intercom On or Off Intercom On/Off 1. Press FUNC. 2. Turn the outer knob to ICS CONFIGURATION. 3. Turn the inner knob to INTRCOM ON/OFF. 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 27: Speaker On/Off

    3. Turn the inner knob to SPEAKER ON/OFF. 4. Press ENT. 5. Turn the inner knob to set the speaker output ON or OFF. 6. Press ENT to save the selected value. Press CLR to cancel the change. 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 28: System Configuration

    3. Turn the inner knob to COM SPACING. 4. Press ENT. 5. Turn the inner knob to set the COM spacing. 6. Press ENT to save the selected value. Press CLR to cancel the change. 3-10 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 29: Com Sidetone (Software V2.10 Or Later)

    6. If offset mode is selected, turn the outer knob to OFFSET. 7. Turn the inner knob to set the offset value. 8. Press ENT to save selected values. Press CLR to cancel the changes. 3-11 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 30: Display Brightness

    The range can be adjusted by using the inner knob. The GTR 225 will either control dimming based on the photocell or the lighting bus. This is set in configuration mode during installation and is not selectable by the pilot.

  • Page 31: Database Info

    5. Press the FUNC to exit page. 3.4.6 Load Database The GTR 225 has a USB port to allow for easily updating the system databases. NOTE: Garmin recommends the use of a USB 2.0 compatible USB flash drive, formatted as FAT32, for updating the database.

  • Page 32: Software Version

    1. Press FUNC. 2. Turn the outer knob to SYS CONFIGURATION. 3. Turn the inner knob to SERIAL NUMBER. 4. Press ENT. 5. Press FUNC to return to the main menu. 3-14 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 33: Timers

    3.5 Timers The GTR 225 has both count up and count down timers, which may operate simultaneously, and are shown in the lower right of the COM displays. The countdown timer always takes precedence if it is running. 3.5.1 Setting Up the Count Down Timer...

  • Page 34: Viewing Timers In The Com Display

    The count down timer, which is counting up, will be highlighted. A count up timer will continue counting separately. Count Down Timer Value Highlighted When Counting Up COM Display with Count Down Timer Now Counting Up 3-16 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 35: Database Information

    The GTR 225 uses a standard USB flash drive to load the frequency database into the GTR 225. The flash drive is not provided by Garmin. The frequency database is stored internally and the USB flash drive is only used to transfer the database into the unit.
  • Page 36 This page intentionally left blank 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 37: Troubleshooting

    Garmin International, Inc. Aviation Products Customer Service Department 1200 East 151st Street Olathe, KS 66062-3426 USA If you have any questions, Garmin Product Support department is available Monday through Friday, 7:00 AM to 7:00 PM CT. US: 913-397-8200 US Toll Free: 1-866-739-5687 Canada Toll Free: 1-866-429-9296 Email: support.gat@garmin.com...
  • Page 38 Troubleshooting Problem Possible Cause Action GTR 225 does not power on No power to the GTR Check power connections, breakers, and main avionics switch Faulty electrical Contact your dealer to wiring or connection perform electrical system test GTR 225 does not transmit...

  • Page 39: Messages

    GTR). Check aircraft power. voltage and reduce electrical COM radio. Radio range load as necessary. Contact will be reduced. dealer for service if this message persists. 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...
  • Page 40 Contact Garmin Customer Support if this message persists. NOTE: The GNC 255’s system ID is required when downloading the frequency database. See section 3.4.8 for details on the system ID. 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...
  • Page 41 30 seconds. This input will now be ignored. This input is not available in all installations. 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...
  • Page 42 30 seconds. This input will now be ignored. This input is not available in all installations. This page intentionally left blank 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...

  • Page 43: Index

    FSS 3-6 FUNC key 1-3 Timers 3-15 Troubleshooting 5-3 Getting started 1-1 Updating frequency database 4-1 USB 1-3, 3-13 ICS 3-7 User frequencies 3-2 ICS key 1-3 Intercom 3-8 Warranty i Index-1 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...
  • Page 44 This page intentionally left blank Index-2 190-01182-00 Rev. B Garmin GTR 225/225A/225B Pilot’s Guide...
  • Page 46 © 2012-2015 Garmin Corporation Garmin International, Inc. 1200 East 151 Street, Olathe, Kansas 66062, U.S.A. Tel. 913/397.8200 or 866/739.5687 Fax 913/397.8282 Garmin AT, Inc. 2345 Turner Rd., S.E., Salem, Oregon 97302, U.S.A. Tel. 503/581.8101 or 800/525.6726 Fax. 503/364.2138 Garmin (Europe) Ltd.

This manual is also suitable for:

Gtr 225bGtr 225a

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