Ubiquiti PowerBeam M5 400 (PBE-M5-400): The Complete Guide

Overview and Introduction

The Ubiquiti PowerBeam M5 400 (PBE-M5-400) is a high-performance, carrier-class airMax ac radio system designed for Point-to-Point (PtP) and Point-to-MultiPoint (PtMP) connections. Part of Ubiquiti’s renowned PowerBeam series, it is engineered for durability, ease of installation, and exceptional throughput, making it a top choice for Wireless Internet Service Providers (WISPs) and network professionals.

Its key differentiator is the integrated, high-gain dish antenna housed within a distinctive, aerodynamic radome. This design minimizes wind load and protects the components from the elements, ensuring stable, long-range connections.

Key Features at a Glance

• High Gain & Range: Integrated 25 dBi dish antenna for links up to 30+ km.

• airMax ac Technology: Efficient TDMA protocol for improved latency and capacity in PtMP.

• Excellent Throughput: Capable of 150+ Mbps real TCP/IP throughput.

• Rugged, Integrated Design: All-weather radome protects the radio and antenna.

• Easy Assembly & Alignment: Built-in alignment tool (AirPrism) for quick setup.

• Cost-Effective: Professional performance at an affordable price point.

Full Technical Specifications

Performance and Real-World Use

What is the PowerBeam M5 400 Used For?

1. Wireless Backhaul: Connecting remote towers or buildings to a central network hub.

2. WISP Customer Premises Equipment (CPE): Providing high-speed internet to subscribers in PtMP setups.

3. Point-to-Point Bridges: Creating a dedicated, high-bandwidth link between two locations (e.g., connecting two office buildings).

4. Video Surveillance: Transmitting high-quality video feeds from remote cameras.

Throughput and Range

• Throughput: In ideal conditions, the PBE-M5-400 can achieve 150-200+ Mbps of real user data throughput.

• Range: Officially rated for 30km+, but successful links have been established at even greater distances with clear line-of-sight.

Crucial Note: Actual performance is highly dependent on environmental factors. Clear Line-of-Sight (LoS) is absolutely mandatory for optimal performance and stability. Obstacles like trees or buildings will severely degrade the signal.

Setup and Installation Guide

What’s in the Box?

• PowerBeam M5 400 Unit

• Piston GP Mount

• Gigabit PoE Injector

• Quick Start Guide

• Mounting Hardware

Step-by-Step Process:

1. Mounting: Attach the Piston GP Mount to a stable pole (e.g., a mast or chimney). Ensure it is secure and level.

2. Connect Cables: Use a high-quality, outdoor-rated Ethernet cable. Connect the cable from the PoE Injector’s POE port to the device’s Ethernet port. Connect the LAN port on the injector to your computer or switch.

3. Power On: Plug the PoE Injector into a power outlet. The device will boot up.

4. Find and Configure:

   • Set your computer’s IP address to 192.168.1.10 (or use DHCP if enabled).

   • Open a web browser and go to http://192.168.1.20.

   • The airOS configuration interface will load.

5. Align the Antenna (Critical Step):

   • In the airOS interface, navigate to the Main tab > Align section.

   • Use the built-in AirPrism spectral analyzer and signal strength meter.

   • Slowly adjust the azimuth (left-right) and elevation (up-down) of the device while monitoring the signal strength (RSSI). Aim for the highest possible signal (closest to 0, e.g., -45 dBm is better than -65 dBm).

   • Tighten all bolts securely once optimal alignment is achieved.

6. Configure Wireless Settings: Set the device mode (Station for client, Access Point for base station), select the correct SSID, and set security (WPA2-AES is recommended).

Conclusion:

The Ubiquiti PowerBeam M5 400 remains a robust and highly reliable workhorse in the wireless networking world. Its integrated high-gain dish, weatherproof design, and powerful airMax ac performance make it an outstanding solution for anyone needing a stable, long-distance wireless bridge. While newer models exist, the PBE-M5-400 continues to offer exceptional value and performance for its price.