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More on Vivato: An anonymous correspondent sent in a report about Vivato's test deployment.
Two San Francisco prototype "switch"es deployed on the company headquarters roof (aimed northeast in the SoMa district towards Market St) and another on the 49th floor of the Mandarin Hotel (SSID vivato). Coverage is verified available at the 3rd/Towesend McDonalds from >100mW STA, not available for 30mW STA. The STA is the Wi-Fi station, or the system that's broadcasting a signal.
HQ roof prototype (known as "tankgirl") is comprised of an 2ft by 2ft array ~6in depth on a custom metal pivot mount. Production to be 1 meter by 1 meter ~2in depth. Weatherized by a saranwrap and packaging tape, obviously will be encased in permanent plastic for production.
Five Agere Hermes NICs (MAC prefix 00:02:2d:34:2x:xx), all on channel 6 (current software limitation to be fixed), beaconing out SSID "vivato_wifi_switch". Standard desktop PC behind array, not an embedded board (no Musenki love), running Linux. Same spanning-tree bridging as OpenAP or HostAP ("quick prototype hack"). FCC spec'd for Point to Point, currently 49dBm EIRP (maximum FCC for PtP in Path 15 - See Pozar's paper). Two models - indoor (~$5k) and outdoor (~$10k). This is product one, product two "will blow you away".
Contradicting one of these last elements is email from a Vivato engineer who wrote, the core of the old 'musenki' source tree is the basis for the Vivato switch software, right down to the bootloader. The Musenki software was developed under an open source license.