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White cylindrical GPS antenna with NMO base, 35.6 mm tall and 66 mm wide

Laird Technologies

Laird Technologies GPSU15M NMO GPS 3 or 5 Volt Bias

SKU CH-478Z-645Q8

NMO-mount GPS/GLONASS antenna with 26–32 dBi gain, 50 Ω impedance, RoHS compliant, rated -35 °C to +85 °C

  • Reliable GPS reception from 1575.42 MHz frequency
  • Durable outdoor use with -35 °C to +85 °C operating range
  • Secure NMO mount fits 35.6 mm length profile
  • Strong signal gain between 26 dBi and 32 dBi
  • Environmentally sealed design meets RoHS compliance standards

Rugged GPS antenna for fleet tracking

The Laird Technologies GPSU15M is a sealed, weatherproof GPS and GNSS antenna built for vehicle tracking and fleet management installations. It mounts via an NMO connector and operates on a 3 or 5 volt bias supply for broad compatibility with tracking hardware.

Consistent gain across elevation angles

The directional, circularly polarised element delivers 3.0 dBi gain at 90° elevation and -5.0 dBi at 20° elevation, maintaining a VSWR of 2 across the 1574.42 to 1576.42 MHz band. The Low Loss ATX195 cable and 50 ohm impedance preserve signal integrity during continuous operation in exposed outdoor environments.

Replaces damaged or lower-gain NMO GPS antennas

This unit upgrades installations where an existing NMO-mount antenna has failed or provides insufficient gain for reliable positioning. It is not suited for applications requiring multi-band GNSS coverage beyond the single GPS port or for installations that cannot accommodate the 35.6 by 66 mm footprint.

Highlights

  • Reliable GPS reception from 1575.42 MHz frequency
  • Durable outdoor use with -35 °C to +85 °C operating range
  • Secure NMO mount fits 35.6 mm length profile
  • Strong signal gain between 26 dBi and 32 dBi
  • Environmentally sealed design meets RoHS compliance standards

Specifications

BrandLaird Technologies

Questions about this item

Does the GPSU15M draw enough current to heat up or drain the vehicle battery during all-day fleet tracking?

The antenna is a passive GPS/GLONASS element with a 26–32 dBi gain LNA that operates on 3 V or 5 V bias through the NMO connector; power consumption is negligible and the sealed housing stays at ambient temperature in continuous use.

What mounting hardware and cable must I already have to install this NMO-mount antenna?

You need an NMO roof or trunk-lid mount with a 19 mm hole or magnetic base, plus a Low-Loss ATX195 coaxial cable terminated in the connector required by your GPS receiver — the antenna itself supplies only the NMO base and element.

Will the 1575.42 MHz GPSU15M work alongside an older 2G/3G cellular antenna mounted on the same vehicle roof?

Yes — the GPSU15M is a narrow-band GPS/GLONASS antenna centred on 1575.42 MHz with a 2:1 VSWR, so it does not radiate or receive in cellular bands and can be mounted beside legacy antennas without desense or pattern distortion.

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