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uAvionix Corporation

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Identification Friend or Foe & Mode 5 Combat ID for Military UAS United States of America
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uAvionix Corporation

Identification Friend or Foe & Mode 5 Combat ID for Military UAS

300 Pine Needle Lane Bigfork, MT 59911 United States of America Regional Offices
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uAvionix is a leading developer of communications, navigation, and surveillance solutions for military UAS (unmanned aircraft systems).

uAvionix develops low SWaP TSO-certified and uncertified avionics for tactical Identification Friend or Foe (IFF) markets.

Our cross-disciplinary team of experts specialize in embedded RF engineering, hardware, software, and cloud services to provide low SWaP and affordable ADS-B transponders, IFF transmitters and receivers, and GPS receivers for the defense sector.

Mode 5 Combat ID & IFF Solutions for Defense

Engineered to the highest standards, uAvionix low-SWaP systems can be installed on Group 1 or Group 2 sUAS. Our RT-2087/ZPX IFF (Identification Friend or Foe) solutions provide secure Combat ID with Modes 1, 2, 3/A, C, S, and 5 interoperability for tactical UAV.

RT-2087:ZPX AIMS

ZPX systems are rigorously tested to ensure the highest performance specifications and operation within harsh environments. AIMs Mk XIIB certificated ZPX transponders contain internal crypto emulators to provide non-classified Mode 5 testing and demonstration capability and are crypto-appliqué compatible.

ZPX transponders are also compliant with civil airspace requirements as Mode S/1090ES ADS-B transponders, simplifying aircraft configurations.

Key Solutions:

  • ZPX-A – Micro Mode 3/A, C, S, and ADS-B OUT transponder for Group 1–2 UAS, enabling civil airspace integration with low SWaP and optional pairing with SBAS GPS and autopilots.
  • ZPX‑1 – AIMS-certified Mode 5 transponder with ADS-B capabilities for Group 2+ UAS, compatible with KIV-79 crypto for NATO-standard IFF; supports Mode S EHS and Mode 5 Level 2-B receive.
  • RT-2087/ZPX – Compact Mode 5 L1/2 transponder supporting ADS-B In/Out, autopilot integration, crypto emulator tools, and 250 W output power for tactical UAS and high-altitude ops up to 60,000 ft.
  • ZPR – Passive Mode 5 L2/2-B and dual-band ADS-B receiver for air, land, and maritime platforms; supports KIV-77/79 crypto, GNSS timing options, and dense signal environments.
  • SkyTAK – Portable surveillance solution for dismounted, vehicle-mounted, and UAV teams; passively receives ADS-B and Mode 5 Level 2/2-B traffic for real-time situational awareness via ATAK, WinTAK, and WebTAK.
ZPRMode 5 Transponder for Combat ID and Air Traffic Control Surveillance ZPX-1IFF Transponder from uAvionix SkyTAKskyTAK-2025 RT-2087/ZPXMode 5 Transponder for Combat ID and Air Traffic Control Surveillance
Input Voltage / Power 8-32V
1W Continuous		 11-33VDC
3.5W STBY / 5.5W NORMAL / 6W Peak		 8-32VDC
1W Continuous		 11-33VDC
3.5W NORMAL / 4W Peak
Size 83 x 47 x 15 mm 83 x 47 x 21 mm 5.7 x 3 x 1.85 in 83 x 47 x 15 mm
Weight 50 g 91 g 500 g (approx.) 68 g
Operating Temp -45 to 70°C -45 to 71°C -45 to 71°C -45 to 71°C
ADS-B Rx Sensitivity -79 dBm ±2 dB -79 dBm ±2 dB -79 dBm ±2 dB -79 dBm ±2 dB
Mode 5 Rx Sensitivity -84 dBm -84 dBm -84 dBm ±2 dB -80 dBm
ADS-B 978 Rx Sensitivity – – -81 dBm ±2 dB –
Transponder Modes – SIF & Mode S – Mode 1,2, 3/A, C, S
1090 MHz Tx Power – 250 W (54 dBm) – 250 W (54 dBm)
Altimeter -1000 to 126,750 ft -1000 to 126,750 ft – TSO-C88b to 35,000 ft
±1% to 60,000 ft
Control Interface 57,600 bps RS-232
uAvionix OEM Protocol		 57,600 bps RS-485/-232
GDL90+		 COM 2 – 57,600 bps / uAvionix UCP 57,600 bps RS-485/-232
GDL90+
Position Interface 115,200 bps RS-232
uAvionix OEM Protocol		 115,200 bps RS-232
uAvionix OEM Protocol		 – 115,200 bps RS-232
uAvionix OEM Protocol
Traffic Interface 115,200 bps RS-232
GDL90+ / AIMS 23-901		 115,200 bps RS-232
GDL90+ / AIMS 23-901		 COM 1 – 115,200 bps / AIMS 23-901 115,200 bps RS-232
GDL90+
Crypto / KIV Interface AIMS 04-900(A)
Option B (KIV-77 / KIV-79)
Internal Emulator		 AIMS 04-900(A)
Option B (KIV-77 / KIV-79)		 AIMS 04-900(A)
KIV-79		 AIMS 04-900(A)
Option B (KIV-77 / KIV-79)
Antenna Options – – Integrated (25 nm)
External TNC (150 nm)		 –

More information: Low SWaP Micro IFF Solutions

Products

RT-2087/ZPX

Mode 5 Transponder for Combat ID & air traffic control surveillance

ZPX-A

AIMS-certified Mode S transponder with ADS-B

ZPX-1

Combat ID Mode 5 transponder with ADS-B for tactical UAS

ZPR

Passive Mode 5 IFF & ADS-B receiver for detection of military & civil aircraft

SkyTAK

Ruggedized tactical airspace surveillance solution for multi-domain operations

Articles

Latest
uAvionix skyAlert ADS-B Receiver Enhances BVLOS Situational Awareness

uAvionix highlights skyAlert, a portable ADS-B receiver enhancing situational awareness and safety for BVLOS drone operations in utilities and public safety sectors

Feb 20, 2026
uAvionix SkyLine Demonstrates Robust Multi-Datalink C2 in Wales BVLOS Testing

uAvionix’s SkyLine system demonstrated reliable, standards-based CNPC command and control with multi-datalink connectivity, supporting the first UK hydrogen fuel Beyond Visual Line of Sight flight

Dec 08, 2025
uAvionix Collaborates to Incorporate FlightLine ADS-B Data for Mission Critical Operations

uAvionix has partnered with VOTIX, integrating its FlightLine ADS-B data into the VOTIX drone operating system, enhancing real-time situational awareness, safety and efficiency in mission-critical DFR and AAM settings

Sep 03, 2025
Collaboration to Enhance Airspace Situational Awareness for Drone Operators

uAvionix and Aloft Technologies demonstrate improved airspace safety and operational efficiency by integrating the FlightLine and Casia G, with the Air Boss unmanned traffic management system

May 26, 2025
New muLTElink Features Improve Command & Control for UAS

uAvionix’s latest muLTElink software update enhances UAS connectivity with automated link management, improving resilience, reliability, and cost-efficiency in complex operations

May 21, 2025
uAvionix Expands Casia G Capabilities for Continuous BVLOS Operations

uAvionix’s Casia G Release 4.0 introduces nighttime aircraft detection, enabling continuous BVLOS UAS operations with FAA approval and enhanced airspace awareness for law enforcement and commercial use

Mar 11, 2025
Successful Test Flights of Rugged Airborne Radio & Antenna

Starlink and uAvionix’s muLTElink airborne radio has been successfully integrated in recent test flights, aiming to achieve advanced LEO-satellite-based C2 communications for sUAS

Aug 20, 2024
DFR Initiative Receives FAA Approval for BVLOS Operations

The Oswego City Police Department’s Drone as a First Responder (DFR) program is set to draw on the uAvionix Casia G ground-based detect-and-avoid (DAA) system to support BVLOS operations

Jun 21, 2024
uAvionix Miniaturized Transponder Selected for TRUAS

uAvionix AIMS-certified RT-2087/ZPX Combat ID and Air Traffic Control surveillance system has been selected for Tactical Resupply Unmanned Aircraft Systems for U.S. warfighters

May 26, 2023
First Mode 5 IFF Level 2-B Combined Transponder-Receiver Released

uAvionix’s ZPX-B2 leverages a single crypto, reducing weight and volume on NATO and allied military tactical manned and unmanned aircraft platforms

Jul 15, 2022
uAvionix Offers IFF & Mode 5 Combat ID for Military UAS

Defense Advancement showcases the company’s low size, weight, and power and affordable ADS-B transponders, Identification Friend or Foe (IFF) transmitters and receivers, and GPS receivers for the defense sector

Mar 29, 2022
uAvionix Certifies Second Micro-Transponder with the DoD

The RT-2087/ZPX-A micro-transponder is now certified in accordance with the AIMS 17-1000 performance specification to enable small DoD aircraft to cooperatively participate in National Airspaces worldwide

Jun 23, 2021
Regional Offices & Locations
uAvionix Corporation United States of America 300 Pine Needle Lane Bigfork, MT 59911 +1 (844) 827-2372 Contact Website
uAvionix Corporation United States of America 880 Harrison St. Suite 185 Leesburg, VA 20175 +1 (844) 827-2372 Website
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