Why not just run it in the LinkPlanner and find out? On Thu, Dec 2, 2010 at 9:35 AM, Christopher Hair <wirele...@ntinet.com>wrote:
> We use 5.8Ghz PTP & PTMP and 900Mhz PTMP to reach customers on the other > side of a lake about 2.2 miles wide. AP side is on a 40ft pole mounted at > the edge of the lake shore. SM's are approx. 25 feet above the water on the > other side. This site has been running now for about 18 months without any > issues. > > Chris > > -----Original Message----- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On > Behalf Of Robert West > Sent: Wednesday, December 01, 2010 10:04 PM > To: 'WISPA General List' > Subject: Re: [WISPA] Advice on PTP link over water? > > Look at 900MHz. It's my understanding that 900MHz is crazy good over > water. > > Albert- > > > -----Original Message----- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On > Behalf Of Tom Sharples > Sent: Wednesday, December 01, 2010 4:51 PM > To: WISPA General List > Subject: [WISPA] Advice on PTP link over water? > > Hi, we need to install an aprox. 8 mile PTP 5.8Ghz link near the Big Island > in Hawaii. One end will be at about 50ft MSL, while the other end is at > about 3500ft. The first 4 miles are over water, with rest over moderately > hilly terrain to a freestanding 50ft tower. The ends have LOS. Ordinarly > I'd > just use a conventional setup with a pair of 2' dish antennas and XR5 > radios, but am considering using dual-polarity feedhorns (or even separate > dishes) and diversity or dual radios due to the water. Is this worth the > effort, or should we just use e.g. horizontal polarity and stick to it? > Since the one end is much higher than the other I'm thinking this should > mitigate water effects, but would welcome any opinions. > > Thanks, > > Tom S. > > > > > ---------------------------------------------------------------------------- > ---- > 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/ >
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