Wi-Fi Antenna Length: 108mm

Wireless Telemetry Precision: 108mm Wi-Fi Antenna

Modern engine management is no longer a tethered affair. The 108mm Wi-Fi Antenna is the standard-issue communication spire for the Haltech Nexus Series of VCUs and ECUs, enabling the robust wireless connectivity that defines the next generation of tuning. Designed to operate on the 2.4GHz band, this “stubby” antenna strikes the perfect balance between compact packaging and signal gain. It allows tuners and drivers to communicate with the ECU wirelessly for data logging, real-time telemetry, and calibration adjustments without the need for a USB cable in the cockpit. Its rigid construction and tuned length ensure that even in the noisy RF environment of a race car—saturated with ignition noise and alternator whine—the digital handshake between your laptop and the Nexus unit remains stable and fast.

Engineering & Signal Physics

The 108mm length is not arbitrary; it is a tuned resonant length for the 2.4GHz ISM band, optimizing the Standing Wave Ratio (SWR) to ensure maximum power transfer from the ECU’s internal transmitter. The antenna features a knurled SMA connector base for secure, tool-free tightening, ensuring it won’t vibrate loose during track sessions. The radiating element is encased in a durable, non-conductive polymer sheath that protects it from impact, moisture, and engine fluids. Unlike generic antennas, this unit is impedance-matched to the Nexus radio module, minimizing packet loss and latency which is critical when viewing live high-speed data streams.

Operational Benefits

• Cable-Free Tuning: Enables “drive-up” tuning changes in the pits or dyno cell without opening the door or connecting physical wires.
• Compact Form Factor: At just 108mm, it fits easily in tight ECU mounting locations (under-dash, glovebox) without interfering with wiring harnesses or mechanical linkages.
• Robust Connection: The screw-on SMA interface provides a solid mechanical and electrical ground, essential for antenna performance.

Fitment Guide

This is a direct replacement or spare part for the antenna supplied with Nexus units.

• Suits: Haltech Nexus R5, Nexus R3, Nexus S3, Nexus S2.
• Frequency: 2.4GHz Wi-Fi.

Technical Specifications

Summary & Includes

Includes:

• 1 x 108mm Stubby Wi-Fi Antenna (2.4GHz)