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Published on July 3rd, 2016 | by Jack Eagle


Ubiquiti airFiber sets new World Record for long range wireless Broadband

Ubiquiti, in partnership with The International Centre for Theoretical Physics (“ICTP”),  ‪Centro Italiano Sperimentazione ed Attività Radiantistiche (“CISAR”), have announced that they have established a 304 km (189 mi) high-speed data link from Sardinia to Tuscany, achieving data rates of up to 356.33 Mbps using Ubiquiti airFiber equipment. Amateur radio operators from CISAR and a team of Italian researchers from ICTP established the radio link in the 5 GHz frequency band using Ubiquiti Networks’ airFiber AF-5X radios.

What makes this accomplishment significant is the extremely high data rate and spectral efficiency,” stated ICTP spokesperson Ermanno Pietrosemoli.  “This link attains broadband data rates of over 350 Mbps while using only 50 MHz of spectrum,” he continued. Pietrosemoli also noted that while this is not an FDD (Frequency Division Duplex) system, the link has latencies of less than 3.5 ms, an important measure of networking performance. The link’s high speed and low-latency were ascribed to the Ubiquiti gear’s proprietary Hybrid Division Duplexing technology.

Despite the long distances involved, the link was relatively simple to set up. “Once the antennas were mounted on the towers, the radios were aligned in a matter of minutes using the airFiber radio’s built-in aiming tool,” stated Giuseppe Misuri, President of CISAR.  CISAR operates CisarNet, a nationwide amateur radio communications system which serves as part of Italy’s emergency communications infrastructure.  “With Ubiquiti’s airFiber equipment, we will be able to increase our network capacity considerably without requiring a major capital investment,” Misuri continued.  “This upgrade will provide an excellent tool for our ongoing studies of broadband propagation,” he concluded.

With its spectral efficiency, consistently high throughput over long distances, and low latency, this 304km link showcases the capabilities of the airFiber product line, achieving a figure of merit of over 108.3 Gbps-km, with a spectral efficiency of 2166 bps-km/Hz,” stated Gary Schulz, Vice President of Engineering at Ubiquiti Networks. “The advanced technology in airFiber enables the economic delivery of a high performance broadband experience anywhere in the world.”

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