Ubiquiti airFiber AF-4X 4.9 GHz Backhaul Radio – Complete Link Features
The airFiber X features up to 17.1 Mbps/MHz of industry-leading spectral efficiency and uses proprietary Hybrid Division Duplexing technology to achieve the highest TDD throughput available for long-range, PtP links.
Ubiquiti Networks introduces the airFiber AF-4X, Ubiquiti’s first licensed spectrum radio designed for the public safety sector. It meets the growing need of broadband capacity and optimizes use of the 4.9 GHz radio band with its industry-leading spectral efficiency and TDD throughput. The AF-4X allows you to customize airFiber backhaul links or upgrade existing Rocket Point-to-Point (PtP) links.
Engineered for Performance
Ubiquiti’s INVICTUS custom silicon and proprietary radio architecture are designed specifically for long-distance, outdoor wireless applications. Our INVICTUS core communications processing engine surpasses all of the limitations inherent to generic Wi-Fi chips to provide superior performance, long-range capability, DFS flexibility, and higher delivered throughput.
The airFiber X features industry-leading spectral efficiency of up to 17.1 Mbps/MHz, line-rate data packet processing of up to 525 Mbps of real data throughput, and innovative xtreme Range Technology (xRT) for up to 200+ km in range.

airFiber 4X Specification | |
|---|---|
| Dimensions | 224 x 82 x 48 mm (8.82 x 3.23 x 1.89″) |
| Weight | 0.35 kg (0.77 lb) |
| RF Connectors | (2) RP-SMA Weatherproof (CH0, CH1) (1) SMA Weatherproof (GPS) |
| GPS Antenna | External, Magnetic Base |
| Power Supply | 24V, 1A PoE Gigabit Adapter (Included) |
| Power Method | Passive Power over Ethernet Pins 1, 2, 4, 5 (+) and Pins 7, 8, 3, 6 (-) |
| Max. Power Consumption | 12W |
| Supported Voltage Range | 19-29VDC |
| Mounting | airFiber X Mount (Rocket Mount Compatible) GPS Pole Mount (Included) |
| Certifications | CE, FCC, IC |
| Operating Temperature | -40 to 55° C (-40 to 131° F) |
| Networking Interface | |
| Data Port | (1) 10/100/1000 Ethernet Port |
| Management Port | (1) 10/100 Ethernet Port |
System | |
| Processor | INVICTUS IC |
| Maximum Throughput | 500+ Mbps1 |
| Maximum Range | 200+ km1 |
| Encryption | 128-bit AES |
| OS | airOS F |
| Wireless Modes | Master/Slave |
Radio Frequency | |
| Frequency Range | FCC: 4940 – 4990 MHz IC: 4940 – 4990 MHz ETSI: 4700 – 4990 MHz Other Regions: 4700 – 4990 MHz2 |
| Max. Conducted TX Power | 29 dBm2 (Dependent on Regulatory Region) |
| Frequency Accuracy | ± 2.5 ppm without GPS Synchronization ± 0.2 ppm with GPS Synchronization |
| Channel Bandwidth | 3.5/5/7/10/14/20/28/30/40/50/56 MHz Selectable3 Programmable Uplink and Downlink Duty Cycles |










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