Hey All, I did some field tests (for overseas volunteer project) with some Ubituiti gear; Nanostation2 & Bullet2HP.
One thing that was surprising was the performance degradation when switching from 20MHz to 10MHz/5MHz. Our tests were Raw Bandwidth Tests(AirOS), Video (VLC UDP Stream), Voice (Trixbox G711 Voice Call), and MTR (Latency, Jitter) I still have data to collect and prepare a report for the tech team, but we did notice that when we switched to 10 or 5MHz bandwidth our voice calls was greatly degraded. Only one way; from Fixed to Mobile I could hear the Fixed station easily. Mobile to Fixed the voice was choppy. We started to get packet loss & massive jitter on 10MHz, just going back to 20MHz made the links stable. Fixed Station: On a mountain side - HPOL 9dBI Omni Directional with a Bullet2HP @400mW Mobile Station: 8km away near large body of water - Bullet2HP @400mW w/ 24dBi Directional (HPOL Alignment) -70dbm RSSI Any ideas? We are planning on using 10MHz channels & H-Pol to combat any future spectrum pollution and voice calls over this network is expected. -Israel -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
