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Part# 11-12085
MFR Model# ASA-00139-SU


Important Notes:
  • This is for experimental aircraft use only.
  • See Harness tab for unit details.
  • Standard Kit comes with Rack, Connector Kit, and Back plate.
  • "Standard Kit + Harness" model includes all the same + the harness.
The GTR 200 panel mount comm radio for experimental and light sport aircraft that offers a slim design and powerful features, including advanced auto-squelch, 3D audio, stereo intercom, stereo music input, alert inputs, best-in-class standby frequency monitoring, on-screen frequency identification, and much more.

The GTR 200 is the first to integrate advanced audio panel features like a two place auto-squelch stereo intercom, which senses the amount of sound in the cockpit and automatically adjusts the mic squelch for effortless intercom use regardless of the cockpit noise level. With 3D audio, the GTR 200 makes it easy to discern between the active and monitored standby frequencies as well as the other passengers. The radio’s best-in-class standby monitor is enhanced with patent-pending digital processing, so it seems as though there are two radios in one.

With its advanced integration with the Garmin G3X glass flight display, or other compatible Garmin portable products, the GTR 200 is able to receive a frequency and identifier in the comm’s standby position directly from the G3X’s waypoint page, allowing the pilot to ensure accurate transfer and reduce workload.

This same integration, automatically, and without the need for a database, displays the airport identifier and type on the GTR 200, like “KOSH ATIS” should the pilot manually tune the frequency. And further, these compatible Garmin portable products, constantly stream the flight plan and nearest airports to the GTR 200 for quick access and retrieval of any airport frequency with a single push of the knob.

Accessing these features on the GTR 200 is extremely easy and intuitive, with a sunlight readable display and built-in shortcuts including configurable soft keys to help reduce cockpit workload (for example, configuring one-touch access to music mute or pilot isolate). Optionally installed switches, typically on the flight controls, allow pilots to keep their hands on the controls while performing functions like swapping active and standby frequencies. And for easy retrieval of the most commonly used frequencies, the GTR 200 stores up to 20 pilot-defined frequencies as well as the 20 most recent frequencies used for easy retrieval. The radios are easy to install, with a standard density 37 pin connector and they support both 14 and 28 volt aircraft and offer 25 kHz channel spacing.

List of compatabile Garmin Products:
  • GPSMAP 696
  • GPSMAP 695
  • Aera 796
  • Aera 795
  • Aera 560
  • Aera 550
  • Aera 510
  • Aera 500
  • Aera 660
  • Aera 760
  • G3X
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WARNING: Cancer and Reproductive Harm -


  • Active and standby flip-flop frequencies with location and type identifiers
  • One-touch 121.5 emergency channel tuning
  • Comm frequency monitor function (listens to standby while monitoring the active)
  • 3D Audio separates active and standby frequencies as well as the intercom in headset
  • Auto-squelch listens to the natural noise in the cockpit and automatically adjusts the squelch level
  • Automatic display of the airport identifier and type after tuning a frequency from the user defined presets or a frequency list transferred from a compatible portable GPS or G3X system
  • 10 W transmit power and 25 kHz spacing
  • Large, sunlight readable display
  • Total product footprint is 1.35” tall by 6.25” wide. Has only a 9.4” behind-the-panel depth including connectors (8” without connectors).
  • Only 1.34 lbs. (1.91 lbs. with rack and connectors)
  • Optionally installed switches allow remote control of frequency flip-flop and/or pilot/co-pilot squelch
  • Volume control bar graph display
  • High-visibility alphanumeric LCD display
  • Built-in photocell for backlight control, or support for external 14V/28V lighting bus
  • Backlit keypad controls
  • Transmit status indicator
  • Receive status indicators for both active and standby (when monitored)
  • Monitor function enabled indicator
  • Built-in, 2-place stereo voice activated intercom
  • 2 mono and 1 stereo audio inputs for external systems alerts and music
  • Stores/recalls 20 user defined frequencies with labels
  • Stores/recalls previous 20 frequencies used
  • Squelch test function
  • Extensive installation assistance screens to make it easy to set up external audio sources to the correct level
  • Stuck mic time-out; returns to receive mode to prevent frequency congestion
  • 2 front panel-mounted, user-defined softkeys to assign to frequently used functions such as music on/off and pilot isolate. Can also be assigned to PTT to be used in case the installed PTT button or wiring fails.
  • MicroSD™ card slot for easy software updates
  • Mono/stereo headset detection
  • Easy installation with a standard density 37-pin connector
  • 14/28 V power
  • When Interfaced with G3X and compatible Garmin aviation portables:
    • Automatic transfer of airport frequency groups (ATIS, Ground, Tower, UNICOM, Departure, etc.) for each airport in the flight plan plus nearby airports as you fly. Each transferred frequency includes the location and type identifier for display on the radio after tuning. No GTR 200 database is required for this feature.
    • 1-button access to airports in the flight plan and those near the aircraft


Physical Characteristics
  • Bezel height: 1.35" (34.29 mm)
  • Bezel width: 6.25" (158.8 mm)
  • Rack height (dimple-to-dimple): 1.375" (34.93 mm)
  • Rack width: 6.30" (160.02 mm)
  • Depth behind panel with connectors (measured from face of aircraft panel to rear of connector backshells): 9.39" (238.51 mm)
  • GTR 200 weight (unit only): 1.34 lbs (0.61 kg)
  • GTR 200 weight (installed with rack and connectors): 1.91 lbs (0.87 kg)
General Specifications
  • Operating temperature range: -20° C to +55° C
  • Humidity: 95 percent non-condensing
  • Altitude range: -1,500 ft to 55,000 ft
  • Current draw¹ at 14 VDC:
    • 0.6 A, typical when receiving
    • 3.0 A, typical when transmitting
    • 7.5 A maxiumum, 90 percent modulated into 3.1 VSWR and 11 V power input voltage
  • Current draw¹ at 28 VDC:
    • 0.3 A, typical when receiving
    • 1.40 A, typical when transmitting
    • 3.75 A maxiumum, 90 percent modulated into 3.1 VSWR and 22 V power input voltage
Display Specifications
  • Display size (WxH): 3.4" (88.0 mm) x 0.843" (21.4 mm)
  • Active area (WxH): 2.95" (74.98 mm) x 0.486" (12.36 mm)
  • Resolution: 200 x 33 pixels
  • Viewing angle: left 45°; right 45°; up 10°; down 30°
COM Transmitter Specifications
  • Microphone input: Two inputs, standard carbon or dynamic mic with integrated preamp. The GTR 200 provides a 150 Ω AC input impedance and supplies the microphone with an 11 V bias through 470 Ω +/- 5 percent
  • Modulation capability: 85 percent with 250 to 2500 mVRMS microphone input at 1000 Hz
  • Modulation: AM double sided emission designator, 6K00A3E (118-136.975 MHz)
  • Frequency range: 118.000 to 136.975 MHz, 25 kHz channel spacing
  • Frequency tolerance: +/-5 ppm from -20°C to +55°C
  • Output power: 10 W carrier minimum
  • Duty cycle: 20 percent
  • Carrier noise level: At least 35 dB (SNR)
  • Stuck mic time-out: 35 seconds time-out, reverts to receive
  • Demodulated audio distortion: Less than 25 percent distortion when the transmitter is at 85 percent modulation at 350 to 2500 Hz
COM Receiver Specifications
  • Frequency range: 118.000 to 136.975 MHz, 25 kHz channel spacing
  • Headset audio output: 60 mW minimum into a 150 Ω load
  • Audio response: Less than 6 dB of variation between 350 and 2500 Hz
  • Audio distortion: Less than 25 percent at rated output power
  • Sensitivity: SINAD greater than 6 dB when the RF level is -107 dBm with 30 percent modulation
  • Squelch: Automatic squelch with manual override


11-12085 – Stock GTR 200 with 4 foot harness to audio panel:

The standard 4 foot harness to audio panel includes the following connections:

  • Power and ground
  • GTR 200 com lead to audio panel audio

Below is a listing of optional features for the GTR 200 that are included but not pinned into this connector:

  • Backlight dimmer
  • Discrete 1 & 2
  • Transmit interlock
  • RS-232

11-12003 – Stock GTR 200 with 4 foot harness with pilot & co-pilot jacks attached:

The standard 4 foot harness to jacks includes the following connections:

  • Power and ground
  • Pilot jacks attached
  • Co-pilot jacks attached
  • PTT attached to jacks
  • Music jack 1 attached

Below is a listing of optional features for the GTR 200 that are included but not pinned into this connector:

  • Backlight dimmer
  • Discrete 1 & 2
  • Transmit interlock
  • RS-232
  • Aux audio
If you would like any of the additional wires connected or lengths longer than 4 feet please order the custom harness via part number 11-12084. Email any questions to or call us at 800-826-3160.
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Garmin 200 is great radio. I got the harness with the jacks. The harness is absolute jewelry. Every wire labeled, everything professionally wired. You won’t get a better harness and you won’t find any shop that can do it cheaper.

Dan B
May 26, 2021

I have purchased and installed three of these units in different aircraft and I absolutely love them. Be sure and buy the harness from aircraft Spruce and you will not be disappointed. All the wires are clearly labeled and very easy to install probably only takes me 30 minutes to install one now.

January 7, 2021

Quick service. Thank you

Rick C
December 14, 2020

I deal with Spruce on a regular basis and always find the people and the service to be exceptional.

Terry B
September 15, 2020

excellent service

Hal S
December 2, 2019

Gamin logic, Garmin build quality (though actually in Thailand). I ordered mine with the made up 4ft harness with headphone jacks. This was a replacement radio for an MGL Transceiver. Total install time in a Sonex to remove old radio and harness, alter panel, fabricate a holder for the tray, install and wire in new harness - 8 hours. Including audio interfaces. Did not interface with EFIS data but did interface with EFIS audio alerts. (would have added about another hour to wire the data - but the EFIS may not remain in the aircraft long so....). Would have been many hours longer if I had made my own harness. Harness worth the extra $$ Installation manual is emailed to you by Aircraft Spruce after verified purchase. Configuration time after install - about 30 mins to run through it and make your choices. In service - people hear me fine, the radio proved much more sensitive on my existing antenna - leading me to believe that other brand was OK - but had not been doing me any favors. 3D setup is a nice touch. Intercom is stereo. For $$ - better featured than the other brand for slightly less $$ Penalty is weight. About 1lb heavier once installed. Ill take the 1lb for the added features and sensitivity. Sound quality of interface to a Gamin VIRB camera using the VIRB Audio jack adapter - excellent. If you are a builder/comfortable doing wiring - this install is quite straightforward (again - the pre-made harness is a huge help). The only bit you probably need outside assistance with is the output test - I had to borrow equipment for that. Would definitely buy again.

Graeme S
September 23, 2019

Good service

Juan C
September 10, 2019

Newly installed, but thumb up to ACS for their easy offering of the unit with a prebuilt harness! I had this in and testing in almost no time, and that included cleaning up some existing wiring! Hangar neighbor listening on a handheld said it sounded great!

Scott E
April 7, 2017

The installation manual is not included in the box, but it is readily available here:

Robert S
April 3, 2017

Great Com Radio especially for the PRICE. Get it with the harness unless you are going to remote your head phones more than 3 away, a huge time saver and very high quality.

March 24, 2017


Please note,'s personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Can the GTR 200 radio fit into a SL 40 slot?

No, the GTR 200 is not a direct replacement for the SL 40 as it requires a new installation.

Q: What are the dimensions of the Garmin GTR 200?

Total product footprint is 1.35” tall by 6.25” wide. Has only a 9.4” behind-the-panel depth including connectors (8” without connectors), 1.34 lbs (1.91 lbs. with rack and connectors).

Q: Will the GTR 200 interface with other EFIS units like the GRT Sport SX as the SL-40 did to allow the EFIS to place a comm frequency in the standby of the GTR 200

Yes, Garmin still allows this feature in the GTR 200.

Q: Is the Garmin GTR 200 compatible with Dynon Skyview?

The Garmin GTR 200 can be used as the com radio for a Skyview system but does not connect to the Skyview to show com frequencies on the Skyview display.

Q: Does the GTR 200 fit the King 97 rack?

No, it will not fit as you will have to do a new installation with the GTR 200.

Q: Will the GTR 200 fit the slot left by removing a Narco 810 radio?

No, this will not side into the Narco 810. Also note the GTR 200 is not a certified radio and is intended for experimental aircraft only.

Q: I did not see the music input on the face of the Garmin GTR 200. Is it a standard input 3.5mm jack? If so, where is it located?

There is not a 3.5mm jack on the unit as the music source is from the back of the unit and you attach the 3.5mm jack to it.

Q: Can I get data from my GPS Garmin Aera 500/695/795 using its Power/Data Cable into the GTR 200?

Yes, the date out line from the Aera will go to pin 24 on the GTR 200 (RS 232 In).

Q: Does the Garmin GTR 200 panel mount com radio mute the music audio input when an incoming radio transmission is received?

Per Garmin: Yes, it will.

Q: does the Garmin GTR 200 Comm come with a mounting tray?

The Garmin GTR 200 Panel mount Radio Standard Kit comes with Rack, Connector Kit, and Back plate. The Standard Kit + Harness" model includes all the same with the addition of the harness.