A few months ago Robert J. Pera left his engineering job at Apple Computer to start up his own company called Ubiquiti Networks. It's now rolling out its first wireless products.
Ubiquiti Networks is shipping two products: its SR2 (Super Range 2) IEEE-802.11b/g-compatible mini-PCI card, and its SR5 (Super Range 5) IEEE-802.11a-compatible mini-PCI card.
Designed primarily for outdoor wireless applications, the cards are based on the Atheros AR5213 MAC/BB and Atheros AR2112 ROC chipset, and are supported by standard Atheros drivers. As such, they will work seamlessly with single-board computer platforms, including WRAP, Soekris, and Mikrotik types.
Link Budget Improvements
Running up to about 400-mW of RF (into 50-ohm unbalanced loads), Pera claims both of these $109 cards will provide link budget improvements of up to 20-dB over competing 802.11 products. Pera says they also offer enhanced receiver sensitivity, improved thermal performance, and rugged MMCX antenna connectors (SMA coaxial cable connectors are optional).
The SR2 average transmit power depends on the data rate in use. At rates from 1-Mbit/s to 24-Mbits/s it runs 26-dBm (±1-dB). At 54-Mbit/s speeds power is 21-dBm (125-mW). The SR2's receive sensitivity at 1-Mbit/s speeds is -97-dBm (±2-dB). At 54-Mbits it's -74-dBm. The unit dissipates about 1.2-W when receiving, jumping to about 4.7-W on transmit.
The SR5's transmit power, at rates from 6-Mbit/s to 24-Mbits/s is also 26-dBm (±1-dB). Like the SR2, at speeds of 54-Mbits/s the RF output drops to about 21-dBm. SR5 receive sensitivity at 6-Mbit/s speeds is rated at -94-dBm (±2-dB), and -74-dBm at 54-Mbits/s.
Both the SR2 and SR5 have FCC/CE approval.
Click here to review a brief SR2 datasheet (in Adobe Acrobat .PDF format).
Click here to review a brief SR5 datasheet (in Adobe Acrobat .PDF format).
For more information contact Ubiquiti Networks, Inc., 778 N. First St., Ste. 203, San Jose, Calif. 95112. Phone: (408)-385-1103 or (408)-396-6525 in the US. Phone (886)-939297608 in Taiwan. Fax: (408)-351-4973. E-mail: firstname.lastname@example.org
Ubiquiti Networks, 408-385-1103, www.ubnt.com