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/
