Holybro M9N GPS (Secondary GPS 6-Pin)
by Holybro

The Holybro M9N GPS (Secondary GPS 6-Pin) is an enterprise-grade, high-precision multi-constellation GNSS navigation module custom-tailored for professional sUAS platforms, autonomous vehicles, and industrial robotics requiring dual-GPS redundancy. Driven by the high-performance u-blox M9N engine, this concurrent receiver features a multi-band RF front-end architecture that tracks all four major global navigation satellite systems concurrently: GPS, Galileo, GLONASS, and BeiDou. This simultaneous four-system tracking drastically enhances positional reliability, minimizes time-to-first-fix (TTFF), and maximizes satellite lock density when operating in heavily degraded environments, such as urban canyons or dense tree canopies.

This specific variant comes pre-terminated with a premium JST-GH 1.25mm 6-pin cable, purposely configured to function out-of-the-box as a secondary GPS module on Pixhawk-compliant flight controllers or a redundant sensor via the GPS2 / UART & I2C auxiliary input ports on Cube systems. Housed within a sleek protective case, the module combines a high-gain 25x25x4mm ceramic patch antenna with an integrated LNA MAX2659ELT+ RF amplifier and a SAW filter for unmatched signal integrity against onboard electromagnetic interference (EMI). Additionally, it embeds an internal IST8310 compass (magnetometer), an ultra-bright multi-color RGB status LED for clear hardware diagnostic tracking, an onboard warning buzzer, a physical safety arming switch, and a rechargeable backup capacitor to facilitate lightning-fast warm and hot starts.

Technical Specifications

• GNSS Engine Core: u-blox M9N Concurrent Receiver

• Concurrent Constellations: Up to 4 Simultaneous Systems (GPS, Galileo, GLONASS, BeiDou, plus QZSS & SBAS)

• Frequency Bands Supported: GPS L1 C/A, Galileo E1 Open Service, GLONASS L1OF, BeiDou B1I, SBAS L1, QZSS L1

• Integrated Compass/Magnetometer: IST8310

• Horizontal Positioning Accuracy: 1.5m CEP (with SBAS augmentation)

• Navigation Update Rate: Up to 10 Hz (with 4 concurrent GNSS active)

• Time-To-First-Fix (TTFF): Cold Start: ~26 seconds | Hot Start: ~1 second

• Navigation Sensitivity: –167 dBm

• Input Supply Voltage: 4.7V – 5.2V

• Current Consumption: Less than 150mA – 200mA @ 5V

• Interface Connector Variant: JST-GHR 1.25mm 6-Pin (Optimized for GPS2 / secondary port setups)

• Default Output Protocol & Baud Rate: UBX/NMEA at 115200 bps

• Antenna Array: 25 x 25 x 4 mm active ceramic patch antenna (1.5 dBi gain)

• RF Conditioning Components: MAX2659ELT+ Low Noise Amplifier (22dB LNA Gain) & integrated shielding

• Backup Battery System: Rechargeable Farah capacitance (supercapacitor for warm start memory)

• Onboard Diagnostic/Safety Assets: Ultra-Bright UI RGB status LED, internal warning buzzer, tactile safety switch

• Enclosure Dimensions: 50 mm (Diameter) x 14.4 mm (Thickness)

• Total Module Weight: 32 grams (including enclosure and cable)

• Operating Temperature Envelope: -40°C to 80°C

What's Included

• 1 x Holybro M9N GPS Module (Secondary GPS 6-Pin Configuration)

• 1 x JST-GHR 1.25mm 6-Pin Connector Cable (26cm)

• 1 x "X" Type Folding Pedestal Antenna Mount Kit

• 1 x 70mm Carbon Fiber Support Rod

• 1 x 140mm Carbon Fiber Support Rod