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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.

How it compares

Measured against everything we stock in Antennas, Cables & Rigging Fittings, at today’s prices. Recalculated every night.

Price $123.99
Pricier than about 66% of the 424 comparable items (median $56.99).

Specifications

Product
Brand nameLaird 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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