Ubiquiti airFiber AF-5XHD Radio System
he airFiber AF-5XHD 5 GHz Carrier Backhaul Radio with LTU Technology from Ubiquiti Networks is designed for long-range, Point-to-Point (PtP) backhaul links. It features a high TDD throughput and Hybrid Division Duplexing (HDD) technology that helps the device achieve low latency. The airFiber 5XHD also allows users to customize backhaul links or upgrade existing PtP links.
The airFiber AF-5XHD operates frequencies ranging from 4.8 to 6.2 GHz and features a range of 62 miles. Included with this device is a GPS antenna mount, an external GPS antenna, a metal strap, two zip ties, a 24V/1A airFiber PoE adapter with a mounting bracket, and a power cord.
Engineered for Performance
The radio’s transmit power level can be programmed up to +29 dBm
Programmable Duty Cycle (GPS Synchronized Frames)
The AF-5XHD allows configuration of asymmetric TX and RX duty cycles. TX ratios include 25%, 33%, 50%, 66.7%, and 75%
Configurable GPS Synchronization
The AF-5XHD offers configurable support for 2, 2.5, 4, and 5 ms frames. Timing is compatible with all other synchronous systems
Split TX and RX Frequency
The radio can operate on different frequencies for TX and RX, allowing great flexibility for interference avoidance
Split TX and RX Channel Bandwidth
Support for different channel bandwidths for TX and RX allows users to scale required data capacity more efficiently
Adaptive Modulation up to 1024QAM
Adaptive modulation rates of up to 1024QAM (4096QAM with targeted upgrade) are supported
Dual Redundant Gigabit Ethernet Ports with PoE
The AF-5XHD has two Gigabit Ethernet ports that can be used to provide redundant PoE power
OFDM and OFDMA Support
The radio offers flexible scheduling for 2, 4, or 8 subchannels
Bluetooth Wireless Configuration
Use the built-in Bluetooth interface for wireless configuration
AlignLock Antenna Aiming Guard
This alerts the user when the radio or antenna aiming is changed due to tampering, impact, or storm damage
User-Configurable Interference Mitigation
Three user-selectable profiles support both high‑interference and greenfield deployments for robust, optimal performance
Redundant Images for Fail-Safe Configuration
Creation of backup firmware images ensures fail-safe configuration and enhances reliability
Persistent Spectrum Analysis with Dedicated RX
Perform real-time spectral analysis for the full band on live links without interrupting the link operation
Wide Voltage Range, Enhanced Surge Protection
The AF-5XHD has an operating voltage range of 19‑50 VDC and provides enhanced surge protection
Spectral Analysis with airView
airView allows you to identify noise signatures and plan your networks to minimize noise interference.
airView performs the following functions:
• Constantly monitors environmental noise
• Collects energy data points in real‑time spectral views
• Helps optimize channel selection, network design, and wireless performance
airView runs in the background without disabling the wireless link, so there is no disruption to the network. In airView, there are three spectral views, each of which represents different data: waveform, waterfall, and ambient noise level. airView provides powerful spectrum analyzer functionality, eliminating the need to rent or purchase additional equipment for conducting site surveys
5 GHz Backhaul
The AF‑5XHD covers the entire, license-free, 5 GHz spectrum and includes DFS approval. Anyone around the world can deploy and operate the AF‑5XHD in the 5 GHz range practically anywhere they choose (subject to local country regulations).
Optimal Operation in Unlicensed Bands
Channel width flexibility (10/20/30/40/50/60/80/100 MHz) allows independent TX and RX channel frequency configurations anywhere within the radio band to avoid local interference, and the channel centers are selectable in 1 MHz increments. You also have the ability to program different uplink and downlink duty cycles to support asymmetric traffic requirements.
Ultra-Low Latency with HDD Technology
The AF‑5XHD is designed to provide high TDD throughput and is engineered with proprietary Hybrid Division Duplexing (HDD) technology. In a backhaul link, two AF‑5XHD radios use patent-pending HDD technology to calculate the propagation delay and know when each radio can transmit and receive, so they send packets in precise synchronization. Packet transmission latency is virtually eliminated
Precise GPS frame synchronization frees the AF‑5XHD from interference for enhanced co‑location capability. GPS enables the concurrency of TX and RX frames, so you can co-locate the AF‑5XHD radios and enhance the overall performance of your backhaul links.
Clean Power Output
Using digital pre-distortion compensation and multi-IFFT processing, the innovative RF design delivers ultra-clean power output that improves noise immunity and co‑location performance. This reduces the potential impact on the RF noise environment and allows for the use of higher-order modulation, such as 1024QAM.