Specifications
- Gain
- 3dBi
- Size
- Low-profile (approx. 150mm)
- Price Range
- $35-55
Pros & Cons
Pros
- ✓ No ground plane required — works on fiberglass, plastic, or thin metal
- ✓ Low-profile flush mount — looks factory-installed
- ✓ Professional-grade Laird build quality
- ✓ Proper NMO mount — rock solid at highway speeds
- ✓ Accurate 3dBi gain spec from a reputable manufacturer
- ✓ Wide band 902-928MHz coverage
Cons
- ✗ Requires NMO mount hole drilled in vehicle (permanent installation)
- ✗ Higher cost than magnetic-base options
- ✗ NMO-to-SMA adapter needed for most LoRa devices
- ✗ Harder to source than Amazon generics
Where to Buy
Laird Phantom TRAB9023N
Overview
The Laird TRAB9023N is a professional low-profile NMO-mount vehicle antenna covering the full 902–928 MHz US ISM band. It’s the preferred choice of experienced LoRa war-drivers who want a clean, permanent installation that performs reliably at highway speeds without the risk of a magnetic-base antenna launching off a rooftop.
No Ground Plane Required
Most NMO-mount and magnetic-base antennas depend on the metal vehicle body as an RF ground plane. The Phantom’s unique design eliminates this requirement — it operates correctly even on fiberglass car bodies, glass roofs, plastic fairings, or SUV rooflines over foam insulation. This makes it viable on a far wider range of vehicles.
NMO Mount
NMO (New Motorola) is the industry-standard vehicle antenna mounting system used by public safety and commercial fleet communications. The advantages over magnetic mounts:
- No movement — doesn’t shift, slide, or fly off at speed
- No paint scratching — clean installation with proper weatherproofing
- Reliable connectivity — constant coax connection with no intermittent contact
- Long-term durability — designed for years of daily outdoor use
Requires drilling a 3/4-inch hole in the vehicle roof or trunk lid.
Use with LoRa Devices
Most LoRa radios use SMA or RP-SMA connectors. You’ll need an NMO-to-coax jumper cable with the appropriate connector for your device. Keep this adapter cable short to minimize connection losses.
Performance Notes
At 3 dBi, gain is modest but honest — a good match for mobile use where the vehicle is constantly changing orientation. The wider vertical beamwidth (vs. higher-gain antennas) ensures reliable links even over terrain and to nodes at different elevations. Recommended for dedicated mobile LoRa installations.