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PulsAR-24027 wireless Ethernet bridge

With the proliferation of unlicensed radio devices it can be a challenge to deploy and operate a reliable RF networks in the 2.4 GHz band. Our 2.4 GHz outdoor Wireless Ethernet Bridge is engineered to overcome interference in an increasingly crowded RF spectrum. It will carry your data securely and reliably across extremely long distances, serving multiple remote sites. This product is designed to deploy robust and dependable links even in the presence of interference. PulsAR 24027 can be deployed in point-to-point, point-to-multipoint, and in a tree topology where any remote can become an access point for new subscribers. It supports roaming to allow service vehicles to stay connected to a control center by autonomously changing the hub access point. At Afar Communications we went to great extents to design a radio from the ground up that can provide dependable links under very adverse conditions. This includes the following features:

1. All the electronics are housed in an environmentally sealed enclosure rated for outdoor installation. You can mount the unit in close proximity to the antenna, which increases system performance by avoiding RF cable losses or expensive rigid coax cables.
2. The radio RF bandwidth is much narrower than other unlicensed devices in the 2.4 GHz band. This has several advantages, namely (i) the radio sensitivity is greatly improved allowing very long range wireless links, (ii) there is a much larger number of non-overlapping channels to choose from, and (iii) it is much easier to find an unused gap in a crowded spectrum.
3. In a long range wireless link under heavy interference, clear channels at each end of the link are often different. In the Afar radio the transmit and receive frequencies can be selected independently of each other, allowing you to select the two optimal frequencies to avoid local interferers.
4. The radio incorporates spectrum analysis and timing analysis tools, which allow the operator to quickly perform a survey of the RF environment without the need for expensive or heavy spectrum analyzers.
5. Unique antenna alignment aid provides audio feedback proportional to the RSSI, freeing the installer's hands to adjust and tighten the antenna without having to hold or look at other instrumentation.

The same radio can be used to deploy a back-haul point-to-point link, a point-to-multipoint network, or, using the radio dual antenna ports, a linear-network ideal for deploying multiple nodes alongside a highway, pipeline, or railway track. The radios operate in Time Division Duplex (TDD) mode and feature the Afar SPAN technology that automatically synchronizes the burst transmissions of all co-located radios. You can grow your central site with up to 24 co-located hub radios without worrying about self-interference. With each hub serving up to 32 remote radios, you can expand the network to serve 768 subscribers with an aggregate throughput in excess of 50 Mbps. In a point to multipoint network the hub radios allocate the available bandwidth dynamically among the remote radios that are currently active.

The radio implements a transparent bridge algorithm, where each unit automatically learns the addresses of all stations in the network and forwards over RF only the traffic that needs to be delivered to the remote unit. This reduces the RF throughput required by the radio.

Manufacturer/supplier's information

Company name:		Afar Communications Inc. [ Homepage ]
Business address:		81 David Love Place Santa Barbara, CA 93117 USA
Telephone number:		1-805-681-1993
Fax number:		1-805-681-1994
Contact name:		Nuno Bandeira [ Email ]

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Product groups: Wireless networking   Wireless Ethernet   Industrial Ethernet

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