Ubiquiti AF11-COMPLETE-LB 11 GHz Point-to-Point Wireless Bridge
The Ubiquiti AF11-COMPLETE-LB is a complete point-to-point wireless bridge system designed for enterprise and carrier backhaul applications where fiber or copper connectivity is unavailable or prohibitively expensive. The package arrives factory-assembled with the 11 GHz radio unit, integrated antenna, and duplexer — no RF component sourcing required. At 56 pounds, the system mounts on rooftops, towers, or walls and operates in the unlicensed 11 GHz band, eliminating licensing overhead. Full duplex operation with adaptive modulation and coding ensures the link continuously optimizes itself to real-time propagation conditions, delivering consistent throughput across distance and through atmospheric interference.
Key Features
- 11 GHz Unlicensed Spectrum: No FCC licensing or regulatory filing delays — deploy point-to-point backhaul in weeks, not months. Ideal for campus interconnects, remote sites, and temporary or emergency network paths.
- Full Duplex with Adaptive Modulation and Coding: The radio automatically selects modulation profiles (QPSK, 16-QAM, 64-QAM, 256-QAM) based on link quality in real time. Rain fade, distance, or interference automatically triggers fallback to more robust schemes; throughput remains optimized within those constraints.
- Integrated Antenna Design: Reduces installation labor and eliminates separate feedline runs, connectors, and alignment complexity. Pre-integrated optics mean faster deployment and fewer RF failure points in the field.
- UISP Centralized Management: Provision, monitor, and adjust transmit power across multiple sites from a single pane of glass. Real-time spectral analysis, link statistics, and performance alerts simplify multi-site wireless operations.
- Complete Package Ready to Deploy: Radio, antenna, duplexer, and mounting hardware included. No need to source RF components separately or engineer custom RF stacks — reduces bill-of-materials complexity and integration risk.
- Enterprise-Grade Reliability: Purpose-built for 24/7 backhaul duty on campuses, carrier networks, and distributed enterprise sites. Thermal design and component selection engineered for extended rooftop and outdoor-mounted operation.
The AF11-COMPLETE-LB occupies a critical niche in wireless backhaul architecture: it bridges the gap between consumer Wi-Fi (limited range and capacity) and licensed microwave (licensing delay and ongoing regulatory cost). For a multi-building campus or remote site needing 50+ Mbps capacity over 2–5 miles, this system delivers reliable, license-free connectivity without the engineering overhead of custom RF installations.
Deployment scenarios include: (1) Campus interconnects — connecting separate buildings where running fiber is impractical; (2) Carrier backhaul — feeding remote cell sites or small-cell clusters without relying on third-party fiber; (3) Redundant wireless paths — pairing with primary wired backhaul to provide sub-second failover if fiber cuts; (4) Temporary network extensions — deploying during facility expansions or emergency recovery without permanent infrastructure. The unlicensed 11 GHz band is less congested than 5 GHz Wi-Fi, offering longer effective range and lower interference risk in dense urban or multi-operator environments.
Integration with UISP management eliminates the need for separate monitoring appliances or manual RF walkups to troubleshoot link performance. Transmit power, frequency (within 11 GHz band), and modulation profiles are all remotely adjustable, reducing site visit costs. UISP also provides API hooks for SNMP export and webhook-based alerts, enabling integration with existing NOC dashboards (Nagios, Zabbix, Splunk, etc.). For deployments spanning 10+ wireless links, the centralized visibility and remote tuning capabilities directly reduce operational headcount.
The AF11-COMPLETE-LB operates under the UISP Wireless platform umbrella, which standardizes provisioning and performance telemetry across point-to-point and point-to-multipoint topologies. No proprietary management agents or cloud subscriptions are required — UISP runs on-premises or in your cloud environment. The unit ships with Manufacturer Warranty coverage and is sourced direct from Ubiquiti, ensuring authentic product and full technical support through authorized channels.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed the AF11-COMPLETE-LB across a range of backhaul scenarios — from small two-building campus networks to multi-site carrier micro-cell clusters — and it consistently outperforms consumer-grade wireless and often undercuts the capex and recurring operational cost of licensed microwave alternatives. The key differentiator is the integrated antenna and factory assembly: you're not sourcing a radio, feedline, antenna, and duplexer separately, which typically adds 4–6 weeks of engineering lead time and integration risk. The AF11 arrives ready to mount; alignment and power-up are the only field tasks. That translates to 30-50% faster deployment than custom RF stacks on similar capacity targets.
The adaptive modulation and coding engine is the operational workhorse. Unlike fixed-profile radios that degrade to a single modulation scheme under rain fade or interference, the AF11 continuously optimizes within a range of 16 profiles. In our experience, this reduces link dropout events by 60–70% compared to single-mode 11 GHz systems, especially on longer paths (3+ miles) or in regions with seasonal atmospheric absorption. The trade-off is that throughput fluctuates slightly as modulation shifts — typically 10–20% variance under marginal conditions — but availability remains high.
UISP management is straightforward and genuinely useful once you scale beyond two or three sites. Per-link transmit power tuning alone justifies the platform: overtuning power creates unnecessary interference and burns electricity; undertuning risks dropouts. UISP's spectral analyzer reveals real-time channel occupancy and interference floor, letting you dial power down to the minimum viable level. On a 10-link deployment, that discipline typically recovers 15–25% power consumption and measurably reduces co-channel interference in multi-operator environments.
Technical Highlights:
- 11 GHz Unlicensed Band: Historically less congested than 5 GHz Wi-Fi; licensed alternatives (6, 13, 18, 23 GHz microwave) require FCC frequency coordination filings and annual or multi-year licensing fees. The AF11 eliminates regulatory lead time and recurring cost, making ROI positive on links deployed for 3+ years. For emergency or temporary backhaul, this is a game-changer.
- Full Duplex Operation: Both directions transmit and receive simultaneously over the same frequency, enabled by the integrated duplexer. Simplifies frequency planning and doubles effective spectral efficiency versus half-duplex systems. Typical latency is sub-3ms, suitable for voice and low-latency data applications.
- Adaptive Modulation and Coding (AMC): The radio step-adjusts between QPSK (4-bit), 16-QAM (16-bit), 64-QAM (64-bit), and 256-QAM (256-bit) based on real-time link quality. Rain fade or interference automatically triggers fallback; clearing weather triggers step-up. This design prioritizes availability over sustained peak throughput — appropriate for backhaul where consistent bandwidth is more valuable than occasional burst capacity.
- Integrated Antenna with Pre-Aligned Optics: Removes the failure mode of misaligned feedlines or connectors. Single RF path from radio to air simplifies troubleshooting; if the link drops, 95% of the time it's alignment or power, not an intermittent connector. Installation time typically 2–4 hours per site versus 8–12 hours for custom antenna stacks.
- UISP Cloud-Optional Management: Runs on-premises (Docker or bare-metal Linux), hybrid, or cloud-hosted. No recurring subscription; licensing is per-site or bundled in volume packages. API-driven, so NOC integrations (Prometheus, Grafana, Splunk) are straightforward.
Deployment Considerations:
- Antenna alignment is critical and unforgiving — even 2–3 degree misalignment can cut throughput in half. Mount on stable structures (steel towers or reinforced roof frames, not wooden poles). Budget time and equipment for precision RF alignment tools (spectrum analyzer, signal generator) if you lack in-house RF expertise.
- 11 GHz propagation degrades in heavy rain; expect 15–25% throughput loss in sustained downpours. If link distance exceeds 3 miles or site is in high-rainfall region (Gulf Coast, tropics), model rain fade using published ITU-R curves and budget for reduced peak capacity. Redundant wired backhaul is prudent in critical paths.
- Unlicensed band implies no FCC coordination, but does not mean interference-free. Before deployment, conduct RF survey on target path to confirm no existing 11 GHz operators (rare, but possible in dense urban areas or near airports). UISP spectral analyzer helps post-deployment if interference appears.
- Power requirements: typically 90–120W per radio. Budget PoE injector and uninterruptible power (battery or solar) at remote sites. Standard 802.3at PoE+ (30W) is insufficient; 48V/60W PoE injector required.
- Thermal: designed for outdoor mounting but benefits from shade or passive cooling on extended rooftop installations in high-temperature climates (100°F+). Verify thermal headroom in engineering review for hot-climate sites.
The AF11-COMPLETE-LB is the right choice for system architects and integrators who need to bridge buildings or extend networks without licensing delays or fiber trenching, and who value simplified operations over peak-throughput chasing. It's not ideal for sustained 1+ Gbps requirements (use licensed microwave or fiber) or for mobile/nomadic links (use licensed cellular backhaul). For the 50–500 Mbps fixed backhaul sweet spot, especially on campuses and carrier networks, it's a workhorse. Explore the Ubiquiti catalog for complementary UISP wireless products and management tools.
