GARMIN
DESCRIPTION
Digital Mode C Transponder Solution
- Modern, digital Mode C transponder perfect for aircraft that fly in airspace where ADS-B isn’t required or on aircraft that is equipped with a UAT ADS-B solution
- Offers useful timing and display functions such as timers, altitude monitoring, current pressure altitude readout and more
- Easy replacement for existing transponders, with common 1.65” tall form factor
- Optional Garmin altitude encoder simplifies installation, saves space and reduces potential service expenses should the transponder need to be removed
- Connects to GTN™ series navigators for transponder code selection and control
Offering a simple, affordable replacement for standard Mode C transponder units in aircraft that don’t fly in ADS-B mandated airspace — or that will be equipped with a separate UAT ADS-B transceiver solution — the GTX 325 transponder is a reliable, TSO-certified problem solver. Its solid-state design works to maximize service life and assure dependable ATC traffic surveillance.
A Smarter Way to Squawk
Featuring an easy-to-read LCD display designed for optimal viewing in all lighting conditions, GTX 325 offers a number of useful timing and display functions. Timers include trip time, flight time, count-up and count-down, while display functions include readouts for density and pressure altitude as well as static (outside) air temperature. In addition, the altitude monitor function displays the current deviation from the chosen altitude, as well as provides a “leaving altitude” alert when the deviation exceeds the preset limit. Dedicated push buttons numbered 0 through 9 make for quick and easy squawk code entry, while a dedicated VFR button pulls up the VFR code with a single keystroke. Compatibility with the GTN 750 and GTN 650 series of integrated GPS/Nav/Comm systems also enables transponder code selection and control from your navigator’s touchscreen display.
Altitude Encoding Made Simple
The GTX 325 transponder can also be paired with an optional Garmin altitude encoder to satisfy Mode C data transmission requirements for IFR. The external Garmin altitude encoder mounts separately on the install rack. So, if the transponder ever requires removal, there’s no need for the static line to be disconnected. In turn, that eliminates the need for a follow-on leak check — and thus helps minimize ongoing service costs.
Keeps Your Stack Intact
No matter how your aircraft is currently equipped, our GTX 325 offers a simple, all-bases-covered transponder upgrade solution. The standard size and form factor of the 1.65” high unit assures a straightforward replacement for most existing stack-mount transponders — preventing extra avionics rework and installation downtime. See your authorized Garmin installation center for more details on the GTX 325 upgrade for your aircraft.
Features
- GTX 325 offers a number of useful timing and display functions
- Timers include trip time, flight time, count-up and count-down, while display functions include readouts for density and pressure altitude as well as static (outside) air temperature
- Its solid-state design works to maximize service life and assure dependable ATC traffic surveillance
- Modern, digital Mode C transponder designed for aircraft that fly in airspace where ADS-B isn’t required or on aircraft that is equipped with a UAT ADS-B solution
- Offers useful timing and display functions such as timers, altitude monitoring, current pressure altitude readout and more
- Quick replacement for existing transponders, with common 1.65” tall form factor
- Optional Garmin altitude encoder simplifies installation, saves space and reduces potential service expenses should the transponder need to be removed
- Connects to GTN™ series navigators for transponder code selection and control
- The GTX 325 transponder can also be paired with an optional Garmin altitude encoder to satisfy Mode C data transmission requirements for IFR
- The external Garmin altitude encoder mounts separately on the install rack
- Solid state transmitter (more efficient, longer life): yes
- Aural alerts: yes
- Total air temperature (TAT): yes
- Pressure altitude readout: yes
- Altitude monitor function: yes
- Density altitude readout: yes
- Built-in timers: yes
- Automatic ALT/GND mode: yes
- Pressure altitude encoder module (mounts to connector backplate): Optional
Specifications
Physical & Performance
- Physical dimensions (unit, rack, connectors); depth is measured from face of instrument panel: 1.68” x 6.30” x 10.07” (42 x 160 x 256 mm)
- Display type: Digital
- Weight (unit, rack, connectors) 2.9 lbs (1.32 kg)
- Voltage range: 14/28 VDC (14 W max)
- Transmit power: 200 W minimum
- Temperature: -40° C to +70° C
- Operating altitude: To 55,000 ft (16,800 m)
- Cooling input: Not required
- Environmental compliance (TSO Approved): DO-160G
- Software compliance (TSO Approved): DO-178 Levels B, C, D
- Hardware compliance (TSO Approved): DO-254 Level C; TSO compliance (Approved): TSO-C88b (w/opt. alt. encoder); TSO-C74d
- Mount type: Panel
- Transponder type: Mode A/C
- Squawk code selection: Push-button
Transponder Features
- Solid state transmitter (more efficient, longer life): yes
- Aural alerts: yes
- Total air temperature (TAT): yes
- Pressure altitude readout: yes
- Altitude monitor function: yes
- Density altitude readout: yes
- Built-in timers: yes
- Automatic ALT/GND mode: yes
- Pressure altitude encoder module (mounts to connector backplate): Optional
Why Gulf Coast Avionics?
Gulf Coast Avionics is a leading supplier of avionics, pilot supplies and aircraft services.
Since 1984 Gulf Coast Avionics has been providing quality merchandise from name brand manufacturers to keep pilots, aircraft owners and operators flying.
Our E-commerce Website and our annual Product Catalog are favorites among aviators around the world. With a comprehensive inventory developed to meet almost any avionics, instrument, or pilot supply need, you're sure to find what you want. You will find our prices unbeatable. We guarantee them to be the lowest in the industry!
Our experienced, factory-trained technicians deliver precision avionics installations designed for performance, safety, and reliability. As an FAA Approved Repair Station, we complete certified upgrades and full panel integrations for a wide range of aircraft, from general aviation singles and twins to corporate aircraft, warbirds, and helicopters, bringing the same level of craftsmanship and attention to detail to every project.