We have mounted omnis upside down because an omni pattern tends to radiate from the base of the antenna upward. By turning the antenna upside down, it becomes slight better at receiving and sending. That, and Cisco 1500's make it easy to do...
John RickG wrote: > Thanks! > Is there any advantage for a WISP to do this? > -RickG > > On Wed, Jan 27, 2010 at 4:02 PM, Eje Gustafsson <e...@wisp-router.com> wrote: > > >> Those are more than likely cell phone sites that have those big whip >> antennas going up and down (believe they are 800Mhz frequency range >> systems) >> My understanding it has one out of two reasons why they are built like >> that. >> Antenna diversion or increased base station density. >> Have one not too far from me that has a crown with a total of 6 omni's. 3 >> up >> and 3 down, mounted on a triangular crown. Those omnis are massive and my >> guess are they are at least 10-15 feet it's hard to tell because the access >> road is blocked and I never walked down to get close enough to compare to >> the tower leg joints. >> >> / Eje >> >> -----Original Message----- >> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >> Behalf Of RickG >> Sent: Wednesday, January 27, 2010 2:55 PM >> To: WISPA General List >> Subject: [WISPA] omni upside down >> >> While traveling around, I've noticed a few towers with omnis mounted upside >> down with a neighbor omni mounted right side up. Whats the purpose in this? >> -RickG >> >> >> >> ---------------------------------------------------------------------------- >> ---- >> 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/ >> >> >> >> >> >> -------------------------------------------------------------------------------- >> 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/ >> >> > > > -------------------------------------------------------------------------------- > 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/ > > > > -------------------------------------------------------------------------------- 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/
