New series of VHF NAV/COM radios, the GTR and GNC series. As the replacement products for the popular SL30 and SL40 models, the GTR series COM transceivers and GNC series NAV/COM radios include a breadth of new features to reduce pilot workload, while also offering an affordable solution to meet the
requirements of the 8.33 kHz channel spacing mandate recently enacted by the European Union under the Single European Sky (SES) initiative.
These products have truly reinvented the stand-alone aviation COM radio with novel features like reverse database look-up and the COM monitor function, which bring new efficiencies to cockpit radio management. Beyond that, these products demonstrate Garminís commitment to aviators worldwide, providing the solutions they need to meet the latest regulatory requirements in their regions, such as the recent SES mandate.
The SES mandate
The SES mandate aims to enhance safety and efficiency of air transport in Europe by tripling the number of channels available for aircraft communications. This mandate requires all European aircraft using European airspace to be equipped with 8.33 kHz radios by December 31, 2017. Select GTR and GNC models offer both 25 kHz and the 8.33 kHz operational capabilities required to comply with the law.
The GNC series NAV/COM
The GNC series NAV/COM radios offer all of the same COM features, while also adding navigation capability with VOR/ILS with Glideslope. The GNC series works well with select Garmin flight displays including the G500, G600, G500H and G3X to display the NAV indicators in the primary field of view, and can integrate with most autopilots.
The GTR and GNC series are more powerful than their SL-series predecessors with versions available with 10- or 16-watt transmit power. The GTR 225 includes 10 watts of transmit power and 25 kHz frequency spacing.
All products in the series have received the Federal Aviation Administrationís (FAA) Technical Standard Order (TSO) authorization.
Night Vision Model
Night Vision Goggle (NVG) capable COM and NAV radios. The GNC NAV/COM and GTR COM series of radios are now even better with the addition of new, NVG capable versions.
This latest edition grows our list of NVG capable products which already includes NVG specific GTN series navigators as well as G500/G600/G500H flight displays.
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I had to repair or replace and I’m glad I replaced an old Narco with this, the features this little box has is amazing. Hard to believe what all it can do and it’s just a nav comm
GARMIN GNC 255A NAV COM 10W 8.33 KHZ TSO
We have had this installed (GNC 255 A) paired with a KI-204 indicator and PS Engineering PMA 8000-BT audio panel utilizing the Approach FastStack connecting system (which allows an A&P to install (as long as an IA signs off on the paperwork) on our 1958 Cessna-172.. It is by far the best navcom we’ve had in this airplane, crisp,clear,long range, easy to learn the basics and most of the features. Everyone who flies with us compliments us on the combination (especially if they make or receive a phone call through the PMA 8000-BT), or when they make some ILS approaches, use the comm over long distances (100 miles or sometimes longer). The GNC 255A was a purchase we would purchase again without any hesitation whatsoever.
This unit (GNC255B) was installed with a Dynon HDX and a GPS175, the installation was relatively easy and Dynon had instructions for the interface wiring for both units, (although you will need to hunt Dynon paperwork for those instructions. . . the set up procedure was good. . . if you are computer savvy
Please note, Aircraft Spruce'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. Aircraft Spruce 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.
Yes, an A&P can perform the installation. The unit does not have an STC, however it does carry a TSO certification
Per the manufacturer, yes it will communicate with the Skyview system.
We always recommend to consult with your A&P and / or IA to ensure all proper paperwork is filed.
Yes, this is capable of receiving the GS signal.
Yes, the GNC255 will communicate with the G5.
Per the manual: VOR OBI output provides bearing information from the currently tuned VOR station for Bendix/King Serial OBI devices based upon the VOR receiver. When a localizer channel is tuned on the VOR/LOC window, there is a bit in the data stream set to indicate that a localizer frequency is tuned which stows the needle or drives it to the three oclock position.
Either model will work, 16 watt increases the range of the radio over the 10 watt.
Though explicit instructions are not available for interface with a Sandel 3308, the GNC 255A outputs 429 Arinc which can go the Sandel unit.
Any NAV/COM antenna that matches 118-136 mhz such as AV-10 or AV-17.