Thank you for purchasing the Ubiquiti Networks® airFiber® 24GHz
Full Duplex Point-to-Point 2 Gbps Radio. This Quick Start Guide
is designed to guide you through installation, show you how to
access the airFiber Configuration Interface, and explain how to
set up an airFiber link. This Quick Start Guide also includes the
warranty terms and is for use with the model AF-24HD.
Package Contents
airFiber AF-24HDPole Mount BracketPole Clamps
Carriage Bolts
(M10x150, Qty. 4)
Flat Washers
(M10, Qty. 4)
Split Lock
Washers
(Qty. 2)
Hex Nuts
(M10, Qty. 4)
GPS Antenna
Mount
Metal Strap
(M10, Qty. 4)
24 GHz Full Duplex
Point-to-Point 2 Gbps Radio
Model: AF-24HD
External GPS
Antenna
Cable Ties
(Qty. 3)
Gigabit PoE
Adapter
Power CordQuick Start
Guide
(50V, 1.2A)
TERMS OF USE: Ubiquiti radio devices must be professionally installed. Shielded Ethernet cable and
earth grounding must be used as conditions of product warranty. TOUGHCable™ is designed for
outdoor installations. It is the customer’s responsibility to follow local country regulations, including
operation within legal frequency channels, output power, and Dynamic Frequency Selection (DFS)
requirements.
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0
5
10
5
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airFiber® AF-24HD Quick Start Guide
Hardware Overview
Side
Lock Bolts
Alignment Bracket
Elevation
Adjustment
Azimuth
Adjustment
Lock Bolts
Ground
Bonding Point
2
Back
Hardware Overview
Lanyard Loop
Lock Bolts
Elevation
Adjustment
Lock Bolts
Lock Bolts
Azimuth
Adjustment
Lock Bolts
Cover LockPort Cover
Lanyard Loop
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airFiber® AF-24HD Quick Start Guide
Interfaces
RESETGPSDATAAUXCONFIGLED Display
InterfaceDescription
GPSConnect the External GPS Antenna to this SMA connector.
RESET
DATA10/100/1000 Mbps port handles all user traffic.
AUXPort for audio tone aiming.
LED Display
CONFIG
To reset to factory defaults, press and hold the Reset
button for more than five seconds while the unit is
already powered on.
Digital display used for power, status, and mode
information.
10/100 Mbps, secured port for configuration. By default,
this is the only port that can monitor, configure, and/or
update firmware.
LEDs
4
Speed
Link/Act
GPS
Modulation
Master/Slave
SpeedRX Power
Link/Act
RF Link Status
LEDStateStatus
Off10/100 Mbps
Speed
On1000 Mbps
DATA
Link/Act
OffNo Ethernet Link
OnEthernet Link Established
Random Flashing Ethernet Activity
OffNo GPS Synchronization
GPS
OnOperational (Strong Signal)
Normal Flash*Operational (Weak Signal)
Off¼x or 1x (QPSK SISO)
AUX
Modulation
Short Flash*2x (QPSK MIMO)
Normal Flash*4x (16QAM MIMO)
Long Flash*6x (64QAM MIMO)
On8x (256QAM MIMO)
NumberDecodable RX Signal
RX Power
(-dBm)
Master/
Flashing Number Undecodable RX Signal
OffSlave Mode
Slave
OnMaster Mode
OffRF Off
LED Display
RF Link
Short Flash*Syncing
Normal Flash*Beaconing
Status
Long Flash*Registering
OnOperational
Off10 Mbps
Speed
On100 Mbps
OffNo Ethernet Link
CONFIG
Link/Act
OnEthernet Link Established
Random Flashing Ethernet Activity
Hardware Overview
Overload Condition
* Short Flash (1:3 on/off cycle)
Normal Flash (1:1 on/off cycle)
Long Flash (3:1 on/off cycle)
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airFiber® AF-24HD Quick Start Guide
Installation Requirements
• 17 mm wrench
• 13 mm socket wrench or driver
• Clear line of sight between airFiber radios
• Clear view of the sky for proper GPS operation
• Mounting location with < 0.5° displacement due to twist and
sway under wind loading
• Mounting point:
• At least 1 meter below the highest point on the structure
• For tower installations, at least 3 meters below the top of the
tower
• Ground wires – min. 8 AWG (10 mm2) and max. length: 1 meter.
As a safety precaution, ground the airFiber radios to grounded
Note: For guidelines about grounding and lightning
protection, follow your local electrical regulatory codes.
• Outdoor, shielded Category 5e (or above) cabling and shielded
RJ-45 connectors should be used for all wired Ethernet
connections. Category 6 is required for installations with long
cable runs (up to 100 m).
We recommend that you protect your networks from the
most brutal environments and devastating ESD attacks with
industrial-grade shielded Ethernet cable and shielded RJ-45
connectors from Ubiquiti Networks. For more details, visit
www.ubnt.com/toughcable
6
Installation Overview
Installation Overview
We recommend that you configure your paired airFiber radios
before mounting. Below is an overview of the installation with
specific details on the following pages:
• Connect Power over Ethernet to the DATA port, and connect an
Ethernet cable between your computer and the CONFIG port.
• Configure device settings in the airFiber Configuration Interface.
• Once configuration is complete, disconnect the cables to move
the airFiber radios.
• Reconnect at the site.
• After you have mounted the airFiber radios, establish and
optimize the RF link.
Connecting Power over Ethernet
1. Turn the Cover Lock to the Unlocked icon. Slide the Port Cover
down to remove it.
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airFiber® AF-24HD Quick Start Guide
2. Connect an Ethernet cable to the D ATA port.
3. Connect the other end of the Ethernet cable from the D ATA
port to the Ethernet port labeled POE on the Gigabit PoE
Adapter.
4. Connect the Power Cord to the power port on the Gigabit PoE
Adapter. Connect the other end of the Power Cord to a power
source.
8
SlaveMaster
SlaveMaster
airFiber Configuration
airFiber Configuration
The instructions in this section explain how to access the airFiber
Configuration Interface and configure the following settings:
• Wireless Mode Configure one airFiber AF-24HD as the Master
and the other as the Slave.
• Duplex The airFiber AF-24HD supports both half-duplex and
full-duplex operation. Half-duplex operation provides more
frequency planning options at the cost of higher latency
and throughput. Full-duplex operation provides the highest
throughput and lowest latency; however, you have fewer
frequency management options.
- Half Duplex (default) The TX and RX Frequencies can be the
same or different to suit local interference.
RX
Frequency A
TX
Half-Duplex Diagram
RX
Frequency A
TX
- Full Duplex The TX and RX Frequencies should be different.
RX
Frequency A
TX
Full-Duplex Diagram
RX
Frequency B
TX
• TX and RX Frequencies The TX Frequency on the Master must
match the RX Frequency on the Slave, and vice versa.
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airFiber® AF-24HD Quick Start Guide
1. Connect an Ethernet cable from your computer to the CONFIG
port on the airFiber AF-24HD.
2. Configure the Ethernet adapter on your computer with a
static IP address on the 192.168.1.x subnet (for example,
192.168.1.100).
3. Launch your web browser. Type http://192.168.1.20 in the
address field and press enter (PC) or return (Mac).
4. The login screen will appear. Enter ubnt in the Username and
Password fields. Select your Country and Language. You must
agree to the Terms of Use to use the product. Click Login.
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Note: U.S. product versions are locked to the U.S. Country
Code to ensure compliance with FCC regulations.
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