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Compact USB GNSS receiver with built-in antenna, matte black finish

Hadley Tech LTD

Hadley Tech LTD GN-803G USB GNSS receiver GPS GLONASS 2m accuracy

SKU CH-YZD9-JXTQE MPN GN-803G

USB GNSS receiver with built-in antenna provides GPS and GLONASS positioning at 2 m accuracy and outputs NMEA 183 data

  • TypeGPS Tracking
  • Accurate positioning within two metres
  • Dual GPS and GLONASS satellite reception
  • Built-in antenna keeps setup compact
  • USB interface for simple data connection
  • NMEA0183 output at 3.3 to 5 volts

Compact USB GNSS module

The Hadley Tech LTD GN-803G is a USB GNSS receiver that tracks GPS and GLONASS constellations. It delivers a stated positioning accuracy of 2m and outputs data in the NMEA0183 format. The unit draws power directly from the host USB port at 3.3V-5V and has no transmitting capability.

USB bus limits and protocol

Operation relies on a standard USB connection for both power and data, so the host must supply 3.3V-5V on the bus. The NMEA0183 stream is text-based and bandwidth is negligible, but the single USB link means no concurrent high-speed interfaces. There is no internal battery, so positioning stops the moment the host port loses power.

Built-in antenna and rugged use

A built-in antenna removes the need for an external cable or mounting bracket, simplifying installation in vehicles or portable kits. The module has no transmitting power, making it receive-only and safe for restricted-RF environments. Its USB form factor suits embedded or laptop deployments where space is tight and a separate antenna is impractical.

Highlights

  • Accurate positioning within two metres
  • Dual GPS and GLONASS satellite reception
  • Built-in antenna keeps setup compact
  • USB interface for simple data connection
  • NMEA0183 output at 3.3 to 5 volts

Specifications

TypeGPS Tracking

Questions about this item

Which version of the GN-803G should I choose for a USB connection?

The GN-803G is offered with a USB communication interface and a built-in antenna, so the single listed version covers USB connectivity directly.

What does the 2m positioning accuracy mean when the receiver is connected to a laptop?

The 2m accuracy indicates the typical horizontal position error you can expect under open-sky conditions when the module is powered from a USB port.

How does the USB interface and NMEA0183 data format limit the update rate in practice?

The USB link carries NMEA0183 sentences at standard baud rates, so the practical update rate is capped by the serial-over-USB throughput rather than the USB bus itself.

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