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menuAF-5, AF-5U Quick Start Guide

Package Contents

airFiber AF-5/AF-5U
Upper Mount Bracket with Elevation Rod
Lower Mount Bracket
Pole Clamps (Qty. 2)
M10x150 Carriage Bolts (Qty. 4)
M10x100 Carriage Bolts (Qty. 2)
Serrated Flange Bolts (Qty. 4)
Stabilizer Brackets (Qty. 2)
Serrated Flange Nuts (Qty. 6)
Zip Ties (Qty. 2)
Gigabit PoE (50V, 1.2A)
Power Cord

Hardware Overview

Reset Button

To reset to factory defaults, press and hold the Reset button for more than five seconds while the unit is powered on.

Remote Display

Displays the received signal strength in dBm of the remote airFiber radio.

Local Display

Displays the received signal strength in dBm of the local airFiber radio.

Management Port

10/100 Mbps, secured port for configuration. By default, this is the only port that can monitor, configure, and/or update firmware.

Aux Port

Port for audio tone aiming.

Data Port

10/100/1000 Mbps port handles all user traffic.



No GPS synchronization


Operational (strong signal)

Normal Flash1

Non-operational (weak signal)

Master LED


Slave mode


100 Mbps

Link LED


RF off

Short Flash1


Normal Flash1


Long Flash1




Overload LED

Fast Flash

Overload condition

(Unlabeled) LED


10x (1024QAM MIMO)

8x LED



6x LED



4x to 0.25x LED



Long Flash1


Normal Flash1

1x QPSK xRT2

Short Flash1

¼x QPSK xRT2

Management Port Activity LED


No Ethernet link.


Ethernet link established.

Random Flashing

Ethernet activity.

Management Port Speed LED


10 Mbps


100 Mbps

Data Port Activity LED


No Ethernet link.


Ethernet link established.

Random Flashing

Ethernet activity.

Data Port Speed LED


10/100 Mbps


1000 Mbps

1 Short Flash (1:3 on/off cycle), Normal Flash (1:1 on/off cycle), Long Flash (3:1 on/off cycle)

2 xtreme Range Technology

Installation Requirements

Pre-Assembly Tool

Pole-Mounting Tool

Other Requirements

Installation Overview

We recommend that you configure your paired airFiber radios before mounting. Below is an overview of the installation with specific details in the following instructions:

Note: The AF-5 and AF-5U models share the same installation and configuration instructions.

Connecting Power over Ethernet

airFiber Configuration

This section explains how to access the airFiber Configuration Interface and configure the following settings:

Repeat the instructions in the airFiber Configuration section on your other airFiber radio. After you have configured the airFiber radios, disconnect them and move them to your installation site.

Hardware Installation

The mounting hardware of the airFiber radio can be pre-assembled before pole-mounting.

Mounting Hardware Pre-Assembly

  2. Note: Ensure that the orientation of the Upper Mount Bracket matches the illustration below, with the Elevation Rod on the correct side.


Install a Ground Wire

Secure the other end of the ground wire to a grounded mast, pole, tower, or grounding bar.

WARNING: Failure to properly ground your airFiber units will void your warranty.

Note: The ground wire should be as short as possible and no longer than one meter in length.

Connecting Ethernet

  1. Feed an outdoor, shielded CAT6 cable up through the rightmost cable feed slot on the bottom of the port cover.

Surge Protection

For added protection, install two surge suppressors, such as the Ubiquiti Ethernet Surge Protector, model ETH-SP, at the end of each link. Install the first surge protector within one meter of the airFiber DATA port, and install the second surge protector at the ingress point of the location housing the wired network equipment.



Before a link is established, the Master's LED Display looks like this:

Note: The Local LED Display may briefly flash a large number (such as 95) when there is no link.

Establishing a Link

Adjust the positions of the Master and the Slave to establish a link.

Note: The Master must be aimed first at the Slave because the Slave does not transmit any RF signal until it detects transmissions from the Master.

  1. Ensure that the following bolts and nuts are loose:
    • Four Pre-Installed M10x25 Flanged Bolts on the airFiber radio (two on each side)
    • Four M10 Hex Nuts used to lock the elevation alignment on the Upper Mount Bracket (two on each side)
  2. Ensure that the pole mount fits snugly while keeping the four Serrated Flange Nuts on the Pole Clamps loose enough to allow rotation around the pole for azimuth alignment.

  3. Master Visually aim the Master at the Slave. To adjust the Master's position:
    1. Rotate the airFiber radio on the pole to align the azimuth.
    2. Use the hex nut on the Elevation Rod to adjust the elevation.
  4. Note: Do NOT make simultaneous adjustments on the Master and Slave.

  5. Slave Visually aim the Slave at the Master. To adjust the Slave's position:
    1. Rotate the airFiber radio on the pole to align the azimuth.
    2. Use the hex nut on the Elevation Rod to adjust the elevation.
  6. Check to see if a link is established. Ensure that the Link Status LED is solidly lit green and the Remote and Local LED Displays of the Slave are displaying signal levels.

  7. Slave Aim the Slave at the Master to achieve the strongest signal level on the Remote LED Display of the Slave.

    Note: Values on the LED Displays are displayed in negative (-) dBm. For example, 67 represents a received signal level of -67 dBm. Smaller numerical values indicate stronger received signal levels. For example, a reading of 49 is stronger than a reading of 55.

    Note: Maximum signal strength can best be achieved by iteratively sweeping through both azimuth and elevation.

  8. Master Aim the Master at the Slave to achieve the strongest signal level on the Remote LED Display of the Master.

    Note: If the Overload LED lights up, refer to the airFiber AF-5/AF-5U User Guide at: ui.com/download/airfiber

  9. Repeat steps 6 and 7 until you achieve a symmetric link, with the signal levels within 1 dB of each other. This ensures the best possible data rate between the airFiber radios.

  10. Lock the alignment on both airFiber radios by tightening the nuts and bolts.
  11. Observe the Local and Remote LED Displays of each airFiber radio to ensure that the values remains constant while tightening the nuts and bolts. If any LED value changes during the locking process, loosen the nuts and bolts, finalize the alignment of each airFiber radio again, and retighten the nuts and bolts.
  12. For each airFiber radio, close the port cover and ensure that the Ethernet cable stays in the cable feed slot.

There are three methods for determining the received signal level:

Refer to the airFiber AF-5/AF-5U User Guide for instructions on the airFiber Configuration Interface and audio tone methods.

Installer Compliance Responsibility

Devices must be professionally installed and it is the professional installer’s responsibility to make sure the device is operated within local country regulatory requirements.

The Frequency and Output Power fields are provided to the professional installer to assist in meeting regulatory requirements.


airFiber AF-5/AF-5U


938.4 x 468.4 x 281.4 mm

(36.94 x 18.44 x 11.08")


Mount Not Included11.5 kg (25.35 lb)
Mount Included16 kg (35.27 lb)

Operating Frequency


FCC 15.247, 15.407, IC RSS 2105470 - 5600 MHz, 5650 - 5850 MHz
ETSI EN 301 893, EN 302 5025470 - 5875 MHz
Other Regions5470 - 5950 MHz
FCC 15.247, IC RSS 215725 - 5850 MHz
ETSI EN 302 5025725 - 5875 MHz
Other Regions5725 - 6200 MHz

Max. Power Consumption


Power Supply

50V, 1.2A Gigabit PoE Adapter (Included)

Power Method

Passive Power over Ethernet


Pole Mount Kit (Included)

Wind Loading

863 N @ 200 km/hr

(194 lbf @ 125 mph)

Wind Survivability

200 km/hr (125 mph)

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