UNIT CONDITION
CERTIFICATION
WARRANTY
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Factory New
EASA Form 1
24 Months
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The Trig TX56 Nav/Com is a compact, high-performance navigation and communication system, designed for both VFR and IFR pilots. Whether you’re upgrading legacy avionics or equipping a new aircraft, the TX56 offers a powerful yet space-saving solution with modern digital capabilities. At just 33mm high, this unit provides exceptional clarity, reliability, and ease of use, ensuring seamless communication and navigation throughout every phase of flight.
TX56’s display is clear and bright, showing both primary and secondary frequencies along with airfield / VOR identifiers. A ‘Push Step’ knob allows the fastest change from 8.33 kHz to 25 kHz.
TRIG TX56 NAV/COM COMPLETE SET includes the TX56A unit, mounting tray, installation kit, installation, and operating manuals, and Trig USB data card.
In stock
Available for immediate pick up
Free
Door to door delivery by a trusted carried
Expected in 1-5 Days
Description
Trig TX56 NAV/COM uses a bright, high-resolution display with the clearest presentation of Nav and Com information. The unit has a customizable frequency database that holds over 200 com and an additional 200 nav frequencies, loaded via an included Trig USB stick. Dual Watch allows the monitoring of two com frequencies at the same time. Monitoring of a second Nav VOR is also possible – improving navigational accuracy.

Trig’s popular ‘Say Again’ feature is a single touch button that instantly re-plays the last received transmission, meaning you don’t have to transmit ‘say again’. The Nav/Com includes a two-place intercom with support for stereo music. Trig TX56A NAV/COM has a built-in digital course deviation indicator (CDI). The Nav supports VFR and IFR navigation, including ILS approaches. Trig’s TI106 Course Deviation Indicator is also available as the ideal panel-mounted companion to any TX56 model.
Trig TX56A NAV/COM Features
- Slimline – only 33mm high
- Bright, clear display / simple user interface
- Unique ‘Push Step’ for faster tuning
- Dual Watch – monitor two com or two nav frequencies at the same time
- ETSO and TSO approval (pending)
- Stereo music / two-place intercom
- ‘Say Again’ feature – allows playback of the last transmission
- USB port on facia – upload over 200 com and nav frequency database (CSV file)
- VOR/ILS receiver – monitor the 2nd VOR
- Built-in VOR/LOC converter
- Built-in digital CDI
- Built-in 40-channel glide slope receiver
- Highly efficient – no cooling fans or external cooling required
- Ideal retro-fit for legacy radios – unit is the same height as an SL30
- Unbeatable quality – designed and manufactured in Scotland, UK
- Two-year warranty (starts from the date of installation)

Ease of installation
The TX56 and TX57’s low-profile design requires no external cooling fans. Each unit is designed to easily replace legacy equipment, which includes popular; KX155A and SL 30 models.
Features that matter
The Trig TX56 NAV/COM features a 10-watt Comm radio suited for most general aviation use.
TX56 has an easy-to-read display showing both navigation and communication frequencies and identifiers. Maximum clarity is achieved by giving prominence to the active Nav or Com mode. The unique ‘Push Step’ knob allows the fastest tuning across voice channels, ensuring you can focus on flying whilst communicating.
Trig TX56 Dual Watch feature allows you to monitor two Com or Nav frequencies at the same time – it’s like having a second radio. The Com functions include the ability to select the most recently memorized database frequencies or those displayed on a compatible active GPS track. The radio also features Trig’s ‘Say Again’ technology – a single button press replays the last radio transmission. The Com also features a built-in two-place intercom with inputs for stereo music and auxiliary audio warnings.
The Nav receiver is optimized to provide stress-free operation. Trig TX56 will decode Morse, identifying VORs or ILS. The Nav receiver can monitor a second VOR, which significantly enhances route navigation. This means that a standby VOR radial can be displayed in addition to the primary VOR – allowing the pilot to calculate an accurate position fix quickly.
The unit display features a graphical CDI (course deviation indicator), which allows the pilot to navigate without an external CDI. The TX56 also provides support for various display options, using a range of external cockpit instruments. The automatic centering of the CDI needle displays a direct bearing to a selected VOR for ease of navigation, whilst the to/from button allows you to display the inbound or outbound radial.

Integration benefits
The Trig TX56 NAV/COM benefits from having a built-in VOR/LOC converter and can also support a composite output. This ensures the widest compatibility with installed indicators. The TX56 and TX57 can also tune a remote DME in addition to supporting digital EFIS and PFD indicators.
The ability to integrate the Nav/Com with a suitable GPS (Garmin protocol) allows the automatic display of frequencies along a flight route. Finally, a customizable database can be loaded via the handy USB port, this can contain over 200 of your Com and over 200 Nav frequencies and identifiers. warnings.

Trig TX56 NAV/COM – Complete System Includes
- Trig TX56A NAV/COM Unit
- Mounting Tray
- Installation Kit
- Trig USB Data Card
- Printed Installation Manual
- Printed Operating Manual
- Manufacturer’s Certificates

Trig TI106 CDI – Course Deviation Indicator
Trig’s TI106 is a 3” Course Deviation Indicator – an ideal match to TX56 NAV/COM. Using the latest generation of indicator technology, solid state actuators provide smooth and dependable navigational indications. LED technology for flags and backlighting provides a superior display compared to older legacy indicators. The TI106 will support most existing Nav/Com equipment, making it a suitable replacement CDI across general aviation.
Specification
Technical Overview
Weight | 1,1 kg |
---|---|
Dimensions | 3,3 × 15,9 × 23 cm |
Certification |
ETSO 2C128, 2C169a, 2C34f, ETSO 2C36f, 2C40c |
Compliance |
ED-23C, ED-67, DO-186B, DO-178B Level B, DO-160G, DO-254 Level C |
Supply voltage |
11-33 VDC |
Operating temperature |
-20°C to +55°C |
Cooling requirement |
no fan required |
martinpetera –
Great NAV/COM!