The Air Mux 200 is an affordable (~$2K CAD per side of a link including IDU, ODU and cable) TimeDivisionDuplex (TDD) OFDM Wireless bridge capable of speeds between 4 and 18 Mbps (Ethernet throughput).
The AirMux is manufactured by RAD (http://www.radusa.com).
Data Sheet: AirMux200.pdf
Pictures are in the AirMux Photo Gallery
The AirMux comes in several flavours:
Integral 22 dB patch OutDoorUnit (ODU)
- External ODU with N connector for attachment to an external antenna.
- 2.3, 2.4, 4.9, 5.3 and 5.8 GHz frequency bands.
InterfaceDataUnit (IDU, or "Indoor Unit")
- 10/100 Mbps Ethernet interface
- T1/E1 interface(s), AMI and B8ZS
The IDU and ODU are connected using a straight through Cat5 cable. The units we tested were shipped with 75' of outdoor rated gell-filled Cat5 and included end glands to prevent water intrusion to the connectors.
Contents
Specifications
AirMux/200/F58
Operating System: VxWorks
- Frequency Band: 5725 - 5850 MHz
- Modulation: OFDM - BPSK, QPSK, 16QAM, 64QAM
- Channels: Preconfigured (list me!) or manual tuning @ 5 MHz increments
Transmitter power: AutomaticGainControl, maximum 18 dBm.
- Antenna gain: (integral patch) - 22 dBi
- Antenna Beamwidth: 4.5 / 4.5 degrees
- Range: Up to 41 KM
- Available in Ethernet only and Ethernet + 1, 2 or 4 T1/E1 TDM flavours.
Operating Range
(based on manufacturer's specifications, not real world tested)
Distance (KM)
Air-Interface speed
Ethernet throughput
Receive Sensitivity
41 KM
12 Mbps
4.2 Mbps
-84 dB
25 KM
18 Mbps
6.5 Mbps
-81 dB
10 KM
36 Mbps
13.6 Mbps
-74 dB
4 KM
48 Mbps
18.3 Mbps
-68 dB
AirMux/200/F58/EXT
Operating System: VxWorks
- Frequency Band: 5725 - 5850 MHz
- Modulation: OFDM - BPSK, QPSK, 16QAM, 64QAM
- Channels: Preconfigured (list me!) or manual tuning @ 5 MHz increments
Transmitter power: AutomaticGainControl, maximum 18 dBm.
- Antenna connector : N female
- Available in Ethernet only and Ethernet + 1, 2 or 4 T1/E1 TDM flavours.
Link Tests
We have documented two link tests using the AirMux/200/F58/EXT model with 2xT1 TDM ports:
/NanaimoVancouverAirmuxTest : 65 KM PtP test
Management
Management of the AirMux is done using a Windows based SNMP agent.
By default the AirMuxen are shipped with default settings allowing for two units to be linked without preconfiguration. Once a link is established the AirMux manager is able to provision both ends of the link from a single console.
The AirMux IDU also supports SNMP traps for use with Rad's RadView management suite. SNMP mibs were provided by RAD technical support on request and have been attached to this page as 511MIBlist1.zip and RAD05111.zip.
Alignment
RF alignment is performed using an audible bell emitted by the unit's outdoor unit, and signal strength is displayed by the manager.
- Three consecutive beeps indicates best signal so far.
- Two consecutive beeps indicates increased signal strength.
- A long three second beep indicates decreased signal strength.
- One beep every second indicates a link is not available.
AirMux manager screen shot. 
Security
- The Wireless link is protected using AES-256. We did not find a way to set the encryption keys.
- Management is done via SNMP, thus read and read/write community strings are sent plaintext over the Ethernet port.
- A monitor port is available on the IDU, however documentation is not available. RAD technical support says this port is firmware upgrading and debugging.
A telnet daemon is present and prompts for a VxWorks login.
Authorized distributors
Wireless Technical Services, Inc - Coquitlam, BC
