Ubiquiti AM-3G18-120 AirMax Sector Antenna – 3.3–3.8 GHz High-Gain MIMO Base Station

The Ubiquiti AM-3G18-120 AirMax Sector Antenna is a carrier-grade, high-performance antenna designed for wireless ISPs, enterprises, and rural broadband providers. Engineered with patent-pending beam shaping, superior gain, and high cross-polarisation isolation, this antenna delivers reliable connectivity in challenging environments. Seamlessly pairing with the Ubiquiti Rocket M3, the AM-3G18-120 enables the creation of powerful AirMax 2×2 MIMO PtMP Base Stations with wide coverage and robust performance.

Key Features & Benefits

1. Advanced Antenna Technology

With a gain of 17.3–18.2 dBi, dual-linear polarisation, and exceptional 28 dB cross-pol isolation, the AM-3G18-120 ensures high throughput and reduced interference, rivaling top-tier cellular base station antennas.

2. Seamless Rocket M3 Integration

Specifically designed for the Ubiquiti Rocket M3, this antenna supports instant plug-and-play installation. Simply snap the Rocket into the included mount and connect with the weatherproof RF jumpers no special tools required.

3. Wide 120° Sector Coverage

Delivering 118° horizontal and 121° vertical beamwidth, the antenna provides broad sector coverage, making it ideal for Point-to-MultiPoint (PtMP) base stations serving multiple clients.

4. Rugged Outdoor Performance

Built to withstand winds of up to 125 mph, the AM-3G18-120 ensures long-lasting performance even in harsh environments. Its adjustable pole mount (38–75 mm) makes it versatile for various tower and mast setups.

5. Multi-Vendor Compatibility

While optimised for Ubiquiti’s ecosystem, the AM-3G18-120 also works seamlessly with MikroTik 802.11n NV2 wireless radio cards, offering flexible deployment across different networks.

Technical Specifications

• Frequency Range: 3.3 – 3.8 GHz

• Gain: 17.3 – 18.2 dBi

• Polarisation: Dual-Linear

• Cross Polarisation: ≥ 28 dB

• VSWR: ≤ 1.5:1

• Vertical Beamwidth: 121° (6 dB)

• Horizontal Beamwidth: 118° (6 dB)

• Connector Type: (2) RP-SMA Female

• Dimensions: 735 x 144 x 78 mm

• Wind Loading: 125 mph

• Pole Mount Diameter: 38 – 75 mm

Real-World Applications

• Wireless ISPs (WISPs): Build reliable PtMP base stations for rural and urban coverage.

• Enterprise Outdoor Networks: Extend connectivity across campuses, industrial zones, and large facilities.

• Municipal Broadband: Improve access in underserved communities.

• IoT & Smart Cities: Power outdoor IoT deployments with strong and stable coverage.

• Mixed Networks: Flexible use with both Ubiquiti Rocket M3 and MikroTik NV2 radios.

Why Choose the AM-3G18-120?

✔ Carrier-grade performance at a competitive price
✔ Superior noise rejection with 28 dB cross-pol isolation
✔ Plug-and-play integration with Ubiquiti Rocket M3
✔ Broad 120° coverage for large-scale deployments
✔ Rugged design built for extreme outdoor conditions

Frequently Asked Questions (FAQs)

Q1: What devices are compatible with the Ubiquiti AM-3G18-120?

A1: It is designed for seamless use with the Ubiquiti Rocket M3, but also supports MikroTik NV2 long-range radios.

Q2: How easy is it to install the antenna?

A2: Very easy. It comes with a mounting bracket, weatherproof RF jumpers, and requires no special tools for setup.

Q3: What makes this antenna better than other sector antennas?

A3: The AM-3G18-120 offers patent-pending beam shaping, high cross-pol isolation, and wide 120° coverage, ensuring stronger and more stable connections.

Q4: Can it handle harsh weather conditions?

A4: Yes, it is designed to withstand winds of up to 125 mph, making it highly durable for outdoor use.

Q5: What is the beamwidth of this antenna?

A5: It provides a horizontal beamwidth of 118° and a vertical beamwidth of 121°, ensuring wide coverage for PtMP applications.