Garmin. ® The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Garmin is under license. Other trademarks and trade names are those of their respective owners. ® Jeppesen is a registered trademark of Jeppesen, Inc.
Page 3
State of California to cause cancer, birth defects, or reproductive harm. This notice is being provided in accordance with California’s Proposition 65. If you have any questions or would like additional information, please refer to our website at www.garmin.com/prop65. 190-02766-22 Rev. A Pilot’s Guide...
Page 4
They will harm the anti-reflective coating. Use a clean, lint-free cloth and anti-reflective lens cleaner. CAUTION Ensure that any unit repairs are made by an authorized Garmin service center. Unauthorized repairs or modifications could void both the warranty and affect the airworthiness of the aircraft.
Page 5
“Aviation Database Alerts.” NOTE Contact Garmin Product Support if you want or need to adjust the database. NOTE Garmin requests the flight crew report any observed discrepancies related to database information. These discrepancies could come in the form of any displayed item used for navigation or communication in the air or on the ground.
Record of Revision REVISION DATE CHANGE DESCRIPTION 06.27.24 Production Release. Available for Download Electronic Pilot’s Guide A version of this guide saved in Adobe Acrobat. Available for viewing on your computer or portable device. Go to garmin.com/manuals. Pilot’s Guide 190-02766-22 Rev. A...
Page 7
Gray boxes highlight information about a particular feature or application function. Green boxes may include references to additional information or a useful pilot’s tip. Blue boxes address common questions about Garmin product features and services. 190-02766-22 Rev. A Pilot’s Guide...
Table of Contents 1 SYSTEM AT A GLANCE ..................... 1-1 Overview ..............................1-2 Unit Features ....................1-3 Pilot Interface ............................1-4 Bezel ......................1-4 microSD Card Slot ..................1-5 Display Features ..................... 1-6 Soft Keys ....................1-6 Function Keys ..................... 1-8 Menu Tabs ....................1-8 Pop-ups .....................
Page 10
Table of Contents Adjust Squelch Threshold ................3-7 Tune a COM Frequency ........................3-8 Tune a Standby Frequency ................3-9 Transfer Frequency to Active (Flip-Flop) ............3-10 Monitor a COM Frequency ......................3-11 Find a COM Frequency ........................3-12 Reverse Frequency Look-up ................3-15 Remote Frequency Selection ................
Page 11
Table of Contents View System Messages ........................9-2 Active Message Indication ................9-2 Bluetooth Connectivity Advisories ..............9-3 COM Radio Advisories ................... 9-3 Database Advisories ..................9-5 Pilot Specified Advisories ................9-5 System Hardware Advisories ................9-6 10 GLOSSARY ..........................10-1 11 REGULATORY INFORMATION ................11-1 Compliance ............................
Page 12
INTENTIONALLY LEFT BLANK Pilot’s Guide 190-02766-22 Rev. A...
System at a Glance Overview GTR 205x is a panel-mount COM radio transceiver that employs a 3.2” high-resolution color liquid-crystal display. It is part of the Slimline series of 1.35” by 6.25” COM radio products. 3.2" The unit has 10 W of transmit power. Optional 16 W of transmit power is available with the purchase of a feature enablement.
System at a Glance Unit Features Features vary depending on model and unit configuration. GTR 205x COM TRANSCEIVER • • 2-place intercom system Media player • • 3D audio (COM & ICS) NVIS • • 16 W transmit power capability Hands free calling •...
System at a Glance Pilot Interface Bezel The bezel provides a combination of mechanical knobs and push-keys. Soft keys correspond to selectable features on the display screen. Display Screen microSD Card Slot Menu Key Inner & Outer Knobs Provides direct access Interface for loading Multipurpose dual database, exporting log...
Formatting the microSD card improperly can cause it to not be recognized by the avionics system. To avoid this, and to ensure maximum compatibility with Garmin avionics and your personal computer, format the microSD card with the Master Boot Record (MBR) partition scheme and the FAT32 (MS-DOS) file system format.
System at a Glance Display Features A high-resolution color LCD display provides onscreen controls that correspond to the mechanical knobs and push-keys on the bezel. Optional night vision compatibility (NVIS) is available with the purchase of a feature enablement. Soft Keys Selections change based on the active page or function.
Page 19
System at a Glance CUSTOMIZABLE COMMANDS Not all options may be available. Transmit pilot audio Enable pilot isolation over the active COM mode. channel (push to talk). Display COM Mute/unmute wired frequency search music audio. options. Bluetooth Commands These commands require connection to a Bluetooth enabled device. Play Bluetooth Pause Bluetooth media audio.
System at a Glance Function Keys Toggle keys turn a specific function on or off. The current state of the function is indicated below the key label. Menu Tabs Tabs group information and related controls into individual panes. Contents may include scrolling lists, data fields, function keys, or a combination of controls.
System at a Glance Control Knobs Outer Inner Dual Concentric Knob Volume/Power Knob Inner and outer control knobs offer A single volume knob controls the ability to select and modify audio volume for the COM radio data and settings. and powers the unit on/off. Pushing these knobs momentarily performs additional functions.
System at a Glance Knob Function Indicators Available knob functions annunciate at the bottom of the display. Icons indicate the associated pilot actions: knob turn and/or push. Outer Knob Single or Inner Knob Turn Only Turn & Push Indications include, but are not limited to: COM Standby Frequency Active Available knob functions: •...
Page 23
System at a Glance Menu Active Find Frequency Active Available knob functions: Available knob functions: • • Scroll search categories Scroll menu tabs • • Select frequency Select list items • Add user frequency System Message List Active Available knob functions: •...
System at a Glance Knob Shortcuts For convenience, the unit allows you to access certain controls quickly via knob push. TUNE A COM FREQUENCY From the Home page: Pushing the dual concentric knob once switches knob focus from the COM radio to right side features (if available).
System at a Glance FIND A COM FREQUENCY From any page or tab: Pushing and holding the dual concentric control knob for 1.5 seconds automatically displays frequency search options. The Select Frequency menu opens from the last viewed search result. 1.5 s Prior to activation, the “Hold for Find”...
System at a Glance Screenshots FEATURE REQUIREMENTS • A microSD card in the FAT32 format, with memory capacity between 8 GB and 32 GB Save images to a microSD card at any time using Screenshot. 1. Verify that a microSD card is present in the slot. 2.
System at a Glance Color Conventions • Radio failure Green • Active radio frequency, function • Valid station ID (decoded from Morse code) White • Active system message, mode • Current data and values • Menu options • Scales and markings •...
Optional LRUs may include compatible equipment from either G500/G600 Garmin or a third party G500(H)/G600/G700 TXi manufacturer. These vary by unit and installation type (VFR or IFR). GFC 500/600(H) Some LRUs provide features that...
2 Get Started POWER UP THE UNIT ..................2-2 LOAD DATABASE ....................2-3 SET UP BLUETOOTH..................2-12 CUSTOMIZE PILOT SETTINGS ..............2-15 VIEW SYSTEM INFORMATION..............2-19...
Bezel key backlight momentarily illuminates • Navigation database automatically updates if a newer version is available Splash Page Garmin logo displays as the unit checks for an available database update. Read more about database update methods in Load Database. Power Off the Unit WARNING Never attempt to power off the unit while airborne unless operational procedures dictate.
This system uses the Navigation purchase individual databases or database database for frequency related packages, go to flyGarmin.com. information (Garmin or Jeppesen). Active and Standby Databases The unit uses two types of databases. Both transfer to the unit’s internal storage. Active Database Standby Database •...
Page 32
Get Started DATABASE TRANSFER & ACTIVATION The Navigation database automatically transfers from the microSD card to the unit’s internal Standby storage if it is newer than the database currently in standby. Total transfer time depends on the microSD card type. Activation of the standby database is required to complete the update.
Get Started Load Database from a microSD Card NOTE The unit supports microSD cards in the FAT32 format only, with capacities ranging between 8 GB and 32 GB. The unit stores all databases it receives in its internal storage. After a database updates, the microSD card is no longer required.
Get Started Automatic Updates Updates occur during power up when a Automatic updates occur newer version of the database is available. when: The same process occurs when you load a new database for the first time. • A newer database is detected on the microSD card or in the internal Standby storage...
Get Started Database Errors If a database error occurs: • An advisory appears in the message list • Details regarding the state of the database display on the appropriate information tab Aviation Database Errors Visit flyGarmin.com to report any discrepancies in database information.
Get Started Revert to Previous Database Version Updating a database does not overwrite its previous version. Once the update process completes, the previously active version of the database transfers to the unit’s internal Standby storage. In the event that an automatic update is undesirable, you can revert to the previous version using the manual update feature.
Get Started View Database Information WHERE TO FIND IT During normal operation, you can view information about active and standby databases Menu from the Database Information page. MENU > System > Database System Database Select the appropriate menu tab to view information about active and standby databases.
Get Started Standby Database Selecting Standby displays information about the database that is not currently in use by the system. The previously installed database also appears here once an update completes. “Standby database OK” appears at the bottom of the Standby tab whenever a valid database is present on the installed microSD card or in the internal memory.
Get Started Understand Database Effective Cycles DATABASE EFFECTIVE STATUS • Effective during a specific period • Database with Unit determines database status using the current date specified and time from GPS effective dates • Automatic activation occurs on the effective date during unit power cycle NO VALID DATABASE A message informs you when no...
Setup Bluetooth FEATURE REQUIREMENTS • All portable devices must be Bluetooth enabled to connect to GTR 205x FEATURE LIMITATIONS • The unit allows up to eight total device connections via Bluetooth wireless technology, with only one active device connection at a time Pair a Bluetooth Enabled Device Pair a device from the Bluetooth wireless audio setup page.
Page 41
Once the device is paired, icons along the right of the display indicate the presence of a wireless connection and feature active status. A purple connected icon means the indicated device is connected to GTR 205x via Bluetooth wireless technology. This icon is absent when the device is not connected.
Reconnecting Your Device after a Software Update Bluetooth connections are lost during software updates on the GTR 205x COM transceiver. To reconnect, open the Bluetooth settings on your personal electronic device and select the “GTR 205x” device name.
Get Started Customize Pilot Settings Unit customization options are accessible via the MENU key. For details about specific radio settings and timer functions, refer to the respective section. MENU OPTIONS • Manage audio sources • View intercom • View media player Display Tab •...
Get Started Assign Soft Key Shortcuts WHERE TO FIND IT Customize the default function of the top and bottom soft keys. Options are accessible from MENU the Setup tab. MENU > Setup > Softkey Settings Setup Softkey Settings FEATURE LIMITATIONS • Available shortcut options are dependent upon configuration Soft key commands related to active functions and page navigation still appear as required (e.g.,MSG, BACK, HOME).
Get Started Customize Unit Settings WHERE TO FIND IT Customize the display unit settings. Selecting Units opens a menu of available unit types. Menu MENU > Setup > Units Setup Units To specify unit type: 1. Review the current unit selections.
Installer configured curves determine the amount of change in brightness that occurs in response to a control adjustment. If brightness control is not satisfactory, contact a Garmin dealer to adjust the lighting curves. 2-18 Pilot’s Guide 190-02766-22 Rev. A...
Get Started View System Information WHERE TO FIND IT View information specific to the unit and its software. Menu MENU > System > System Info System System Info Refer here when contacting customer service. System Info • Serial number • System ID •...
3 COM SET UP COM RADIO.....................3-2 ADJUST COM RADIO VOLUME & SQUELCH...........3-6 TUNE A COM FREQUENCY ................3-8 MONITOR A COM FREQUENCY..............3-11 FIND A COM FREQUENCY ................3-12 CREATE COM USER FREQUENCIES............3-19 VIEW COM STATUS ................... 3-22 RESPOND TO A COM ALERT ................ 3-23...
Set Up COM Radio WHERE TO FIND IT VHF COM radio customization options are accessible via the Setup tab. Menu MENU > Setup > COM Settings Setup COM Settings COM RADIO SETTINGS Set transceiver squelch to Auto or adjust the threshold COM Squelch manually.
Set COM Channel Spacing The unit supports channel tuning for both 8.33 kHz and 25 kHz channels within radio-frequency range. Channel spacing is set to 25 kHz by default. Turning the inner knob toggles the transceiver channel spacing between 8.33 kHz and 25 kHz. 25 kHz 8.33 kHz 8.33 kHz step configuration...
Adjust Sidetone Volume Offset FEATURE LIMITATIONS • Availability dependent upon configuration • Offset range: +/-25% of total COM audio volume range Numeric If the unit is wired for audio output, Offset Value set the sidetone volume offset to the preferred level. By default, the offset value is set to zero percent.
You must be the aircraft account Output enablement is available for holder to download this feature. download at flyGarmin.com. This process Contact your Garmin dealer for is similar to downloading the database assistance. and does not require a visit to the dealer.
Adjust COM Radio Volume & Squelch Percent of Adjust radio volume with the small knob Max Volume according to your preference. The unit retains volume settings over power cycles. Relative Volume Indicator Open Squelch Push the volume/squelch knob to override the automatic squelch function.
Adjust Squelch Threshold WHERE TO FIND IT Adjust the squelch threshold via the manual control in the Setup tab. Setup MENU > Setup > COM Settings > COM Settings COM Squelch COM Squelch Default Threshold Push the dual concentric knob to Value select COM Squelch and activate Numeric Offset the manual threshold setting.
Tune a COM Frequency Communication frequencies are split between two selectable windows: • The upper window presents the active COM radio frequency. This is the frequency currently in use for transmit and receive operations. • The lower window presents the standby radio frequency. This frequency may be set and activated at any time.
Tune a Standby Frequency The dual concentric control knob allows you to enter a standby frequency. Pushing and holding the dual concentric control knob for 1.5 seconds automatically displays frequency search options. The selected STBY window turns cyan when you use the control knob to change the standby COM frequency.
Transfer Frequency to Active (Flip-Flop) The transfer (or flip-flop) function allows you to swap the active and standby frequency values. Before After 3-10 Pilot’s Guide 190-02766-22 Rev. A...
Monitor a COM Frequency Enabling monitor mode allows you to listen to the standby frequency while the unit continues monitoring the active COM channel. When the COM active frequency receives a signal, the unit automatically switches back to the active frequency. Once activity on the COM active channel ceases, the unit returns to listening to the standby frequency.
Find a COM Frequency Find and select a standby COM frequency from a list of available database frequencies. Pushing the Find COM soft key while the COM radio is active provides access to multiple search options. Each category displays a list of selectable identifiers based on specific criteria. FEATURE REQUIREMENTS •...
SEARCH RESULTS Each frequency includes general information about the associated waypoint. Bearing Waypoint & Distance Identifier & Facility Name Nearest airports include bearing and distance to field information based on GPS data. MULTIPLE FREQUENCIES A selector appears when more than one frequency type is available at the indicated identifier.
Page 62
FREQUENCY SEARCH ERRORS Search errors may display if any one of the following conditions exist. Nearest Frequency Search Options The unit is configured for GPS The unit is configured for GPS but is not receiving a position. but no database is present. Database Search Option No database is present.
Reverse Frequency Look-up This function automatically displays the facility identifier and frequency type for active and standby frequencies. The unit verifies the displayed frequency against the database at least once per minute. Facility Identifier “+” denotes more than one type associated with the frequency.
Page 64
DATA SIZE & POSITION The size and location of Reverse Frequency Look-up text is dependent upon the status of right side features. Default View Text is larger for easier viewing. Timer Enabled Text shifts beneath the frequency value when you enable right side features.
DATA SOURCE PRIORITY RFL data prioritization is dependent upon certain required conditions, including whether the database source is configured as internal or external. Internal Database RFL information is received from the following sources in order of priority, from highest (1) to lowest (3). SOURCE REQUIRED CONDITIONS Proximity search of database...
Remote Frequency Selection FEATURE LIMITATIONS • Availability dependent upon configuration If configured for remote frequency recall, COM user frequencies are selectable via a remote switch. • Pressing the switch once loads the next user frequency into the STBY window • Pressing the switch repeatedly scrolls through the list of presets •...
Create COM User Frequencies FEATURE LIMITATIONS • Names may be up to 10 characters in length • Maximum number of 20 user frequencies Add a frequency to the user frequency list. Controls are accessible via the Select Frequency menu. 1. Open the Select Frequency menu.
Edit a COM User Frequency Modify an existing user frequency. Selecting a user frequency gives you the EDIT option. 1. Select the user frequency from the list. 2. Push the Edit soft key. 3. Modify the current frequency name and/or value using the dual concentric knob.
Delete a COM User Frequency Selecting Delete opens a confirmation page. From here you can delete the selected user frequency or all user frequencies in the list. Confirm the request to remove the selected user frequency from the list. Selecting Delete All Frequencies opens a pop-up. Confirming the request removes all COM user frequencies from the list.
View COM Status WHERE TO FIND IT View COM radio transmit voltage and received noise. This information is accessible via the Menu System tab. System MENU > System > COM Status COM Status This page is for reference only. Information includes: •...
Respond to a COM Alert Radio failures are indicated by one or more of the following: • Red “X” displays over the COM radio control • Advisory message alerts • COM control options are not available COM radio fail annunciations are designed to be immediately recognizable. For information regarding pilot response to a COM radio failure, consult the AFMS.
Timers View Timers Set a generic timer for general timing needs. Two stopwatch style counters allow you to count up or count down. WHERE TO FIND IT Select the Timer option from the Display tab. MENU > Display > Timer MENU Display Timer...
Timers Set Countdown Timer The unit retains the most recent count down value following a power cycle. 1. Set direction to count down (CNT DN) using the outer control knob. 2. Specify countdown time using the inner and outer control knobs. •...
Audio Sources Manage Audio Sources WHERE TO FIND IT View and control all configured audio sources from a single location. The Audio Sources page is MENU accessible from the Display tab. MENU > Display > Audio Sources Display Audio Sources Audio on/off controls appear to the right of the COM display. Pushing the dual concentric knob once sets the knob focus to Audio Sources.
Audio Sources Audio Controls From here, you may toggle an auxiliary audio source (e.g., dual-COM, other radios, alerts) and/or the cabin speaker on or off. Depending on configuration, Intercom, Media, and Phone functions are accessible from here. To enable or disable an audio input: 1.
1. Menu > Setup > ICS Settings. 2. Enable the 3D Intercom setting. GTR 205x processes intercom positions according to relative seat location (pilot or copilot). By default, the unit assumes that the pilot is in the left seat. This position is configurable.
Audio Sources Mute Audio Sources Set the intercom and/or media player to mute during certain conditions. Mute settings reside in the Setup tab. COM MUTES ICS/MUSIC Mute intercom and/or media audio when the COM radio is receiving a transmission on the active frequency or transmitting sidetone audio. 1.
Page 82
INTENTIONALLY LEFT BLANK Pilot’s Guide 190-02766-22 Rev. A...
Intercom View Intercom WHERE TO FIND IT Allow the copilot to hear what the pilot hears. Intercom is accessible from the Display tab. MENU MENU > Display > Intercom Display Intercom Controls for pilot and copilot intercoms appear to the right of the COM display. Pushing the dual concentric knob once sets the knob focus to Intercom.
Intercom Adjust ICS Volume Volume may be set separately for pilot and copilot intercoms. Adjust intercom volume using the inner and outer control knobs. Turn the outer knob to select the recipient (pilot or copilot). Turn the inner knob to set the volume level according to your preference.
Intercom Enhance Intercom Audio WHERE TO FIND IT Intercom customization options are accessible from the Setup tab. MENU MENU > Setup > ICS Settings Setup ICS Settings INTERCOM SETTINGS 3D Intercom Enable 3D audio for intercom communication. Set intercom to automatically mute media playback when ICS Mutes Music active.
7 Media VIEW MEDIA PLAYER...................7-2 ADJUST MEDIA VOLUME ..................7-3 PLAY MEDIA ......................7-3 ENHANCE MEDIA AUDIO .................7-4...
Media View Media Player WHERE TO FIND IT The Media function provides playback controls for your connected Bluetooth enabled device. MENU Open the media player by selecting the Media option on the Display tab. Display MENU > Display > Media Media Playback controls appear to the right of the COM display.
Media Adjust Media Volume Select the volume control to set the media player volume to a preferred level. Volume displays as a percentage of the maximum volume, with 0% being muted and 100% being maximum volume. The volume control is available only when the media player is connected to an audio source.
Media Enhance Media Audio WHERE TO FIND IT Media audio customization options are accessible from the Setup tab. MENU MENU > Setup > Media Settings Setup Media Settings MEDIA SETTINGS Choose an equalization setting. Equalizer Options: • Off (default) • Rock • Classic • Pop Adjust the current bass level.
Phone View Phone WHERE TO FIND IT Make and receive telephone calls using Bluetooth wireless connectivity and your portable electronic MENU device. Phone is accessible from the Display tab. MENU > Display > Phone Display Phone Controls appear to the right of the COM display. Pushing the dual concentric knob once sets the knob focus to Phone.
Phone Phone Status Icons Ringer is on Ringer is off Battery charge Cellular connection status strength Phone Status Annunciations Refer to the status window for current operating status. ANNUNCIATION MEANING Phone is not connected via Bluetooth wireless Not Connected technology. Pair the device via the Bluetooth setup option (Menu >...
Phone Adjust Phone Volume Select the volume control to set phone volume to a preferred level. Volume displays as a percentage of the maximum volume, with 0 being muted and 15 being maximum volume. The volume control is available only when the phone is connected to a Bluetooth enabled device.
Phone Make a Call Make a call using your portable electronic device. Phone displays the number as you dial. “Active Call” annunciates in the status window when you make or accept a call. Accept A Call Incoming calls generate a status message.
Messages View System Messages WHERE TO FIND IT Advisories are system-related messages relative to the display. A list of active advisories is viewable from the System tab: Menu MENU > System > Messages System You can open the list directly by pushing the Messages MSG soft key when an active message is present.
Messages Bluetooth Connectivity Advisories ADVISORY CONDITION CORRECTIVE ACTION The unit is not Bluetooth is Service required. communicating with the inoperative. Contact dealer for support. Bluetooth module. COM Radio Advisories ADVISORY CONDITION CORRECTIVE ACTION COM radio is reporting COM radio needs that it requires service.
Page 100
Messages ADVISORY CONDITION CORRECTIVE ACTION Unit detects the specified switch is active for 30 seconds. The input is ignored as a result. Radio stops transmitting. Includes: • Verify that the switch is not Standby monitor COM <name> stuck. Contact dealer for remote switch switch is stuck.
Database Advisories ADVISORY CONDITION CORRECTIVE ACTION Re-download and install Active DB corrupt. The active database is database. Contact a Garmin Remove or replace. unavailable or corrupt. dealer for support. The unit is configured for Database card external databases and a Power off the unit and remove ignored.
Messages System Hardware Advisories ADVISORY CONDITION CORRECTIVE ACTION The unit cannot Configuration communicate with its module needs configuration module. Contact dealer for service. service. Unit configuration may still be valid. Unit temperature exceeds Decrease cabin temperature Unit over the over temperature and increase cabin airflow temperature.
Page 103
Messages ADVISORY CONDITION CORRECTIVE ACTION System detects the indicated bezel key is depressed for at least 30 seconds. It will now ignore this input. Push the indicated key again. Includes: <Name> key is stuck. If it remains stuck, contact • Bottom soft key dealer for service.
Page 104
INTENTIONALLY LEFT BLANK Pilot’s Guide 190-02766-22 Rev. A...
Air Route Traffic Control Center ATIS Automatic Terminal Information Service Database Distance Measuring Equipment Federal Communication Commission Flight Service Station Garmin Flight Controller Global Positioning System Garmin Transceiver Radio Intercom System Instrument Flight Rules Liquid Crystal Display Line Replaceable Unit...
Page 106
Glossary Radius to Fix Receive, Receiver Secure Digital Squelch Open STBY Standby True Transmit Visual Flight Rules Very High Frequency Weather 10-2 Pilot’s Guide 190-02766-22 Rev. A...
2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address: www.garmin.com/compliance. UK Declaration of Conformity Hereby, Garmin declares that this product is in compliance with the relevant statutory requirements. The full text of the declaration of conformity is available at the following internet address: www.garmin.com/compliance.
AND CONDITIONS OF THE FOLLOWING SOFTWARE LICENSE AGREEMENT. PLEASE READ THIS AGREEMENT CAREFULLY. Garmin Ltd. and its subsidiaries (“Garmin”) grants you a limited license to use the software embedded in the Garmin Product (the “Software”) in binary executable form in the normal operation of the Garmin Product.
Need help?
Do you have a question about the GTR 205x and is the answer not in the manual?
Questions and answers