How about putting a dish on the ap side, maybe with a dome, would there be enough lobe for the short hop?
-----Original Message----- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of e...@wisp-router.com Sent: Friday, November 20, 2009 7:18 PM To: WISPA General List Subject: Re: [WISPA] Odd 5 ghz behavior Sounds like one of the feed horns are bad or you have freznel blockage that affects the link when drenched. Sent via BlackBerry from T-Mobile -----Original Message----- From: "MDK" <rea...@muddyfrogwater.us> Date: Fri, 20 Nov 2009 19:08:07 To: WISPA General List<wireless@wispa.org> Subject: [WISPA] Odd 5 ghz behavior I have a backhaul feed that completely flips out when it rains. But, only when it rains heavy, and only for a short time. Yes, we took the cables apart, and no, there wasn't water in the cable connections. But, water gets into stuff slowly, and ... err... stays there. This, will be perfectly fine and when a sudden rainstorm hit will go from working as it should to fully dead in minutes. And, when the rain SLOWS (not stops), it comes back up again and will restore to full RSSI faster than I can get to it. Pacwireless grids at both ends, vertical polarization, and no noise that I know of, other than self inflicted, if I set stuff wrong. This is a shared backhaul... One end is 13 miles, one is 3 miles. The near one is off the edge of the beam a bit, mostly due to elevation settings, and being off the center of the beam by 5 or 6 degrees horizontally. The AP end sees the clients go weak and vanish. Both of the client ends see the same thing. If it stops raining, or slows to a spit, by 20 minutes we have good RSSI and the quality starts back up. The quality falls first, then RSSI when the link starts to fail. I'm baffled by this behavior, and have replaced the radio, pigtail, pulled the cable ends off to inspect for water, and didn't find any. But, where I HAVE had water leaks, the water gets in, the link dies, and stays dead. This changes quickly, having a few minutes lag behind a storm. For instance, a sudden 20 minute downpour will see the link die, but by the time it stops raining and I can drive the 10 minutes to the site, it's up and RSSI is fine. I have 2 other nearly parallel links at the same site, none of them seem to have this behavior. I do notice smallish losses in RSSI during hard rains, but nothing like going from high 60's to "can't detect" in minutes. ---------------------------------------------------------------------------- ---- 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/
