GTX 325

$1,995.00

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Description

Overview

  • 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.

Specifications

Specifications

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

Features

Features

  • Solid state transmitter (more efficient, longer life)
  • Aural alerts
  • Total air temperature (TAT)
  • Pressure altitude readout
  • Altitude monitor function
  • Density altitude readout
  • Built-in timers
  • Automatic ALT/GND mode

Optional

  • Pressure altitude encoder module (mounts to connector backplate)

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