My opinion is that the dish damage probably would not cause much RSSI loss. (unless severe, but if it was severe I'm sure you never would ahve installed it). If part of the dish was bent, you'd need to determine what percentage of teh surface area was effected not reflecting to the correct point. Most likely antenna is not the problem.
Wireless links need to be aligned both Horizontally and Vertically. If you did not fine tune alignment vertically on both sides, you need to. Sometimes it takes doing it twice on one side, such as A, then B, then A, to get a good alignment. Also, I did not catch whether you were using Coax SPlit archetecture model or Ethernet Integrated model. If Coax model, a bad connector crimp can easilly cause a 10db RSSI degregation. Never trust a connector just by Visual inspection, if you are not getting correct RSSI. Tom DeReggi RapidDSL & Wireless, Inc IntAirNet- Fixed Wireless Broadband ----- Original Message ----- From: "Bill Gaylord" <bi...@torchlake.com> To: "WISPA General List" <wireless@wispa.org> Sent: Friday, November 05, 2010 9:12 AM Subject: [WISPA] Licensed 11ghz Link Issues, Need Advice >I have a Dragonwave link that was performing about 35-40db lower than > the link budget says it should. I sent tower climbers up to repeak the > link and found they did have it on aligned on a horizontal side lobe. > After re-peaking it got better, but is now about 15-20db lower than the > link budget. It is running about a -52 and the budget calls for a -34. > They did peak the vertical axis, but is it possible that even though > both antennas were mounted plum, that they are aligned on a vertical > side lobe. Like I said, they did say they peaked the vertical, but I > don't know if they did a proper sweep on the vertical because it is not > a quick to do as on the horizontal. They are both plum, but the > antennas have about 300ft of vertical separation at 5 miles. Would > difference in height put them in into a vertical side lobe? I am asking > because the 30in antenna's had come slightly damaged, but it appeared to > just be where the raydom attached to the dish. Dragonwave did not think > this would cause an issue. I just need to know if I need to pay for 2 > more tower climbs to re-peak the vertical, or take down the dishes to > return them. Thank you in advance for any advice that can be given > here. By the way, it is our first licensed link, so it is my first > experience with anything above 5ghz. > > Bill Gaylord, President > COLI Inc. > > > -------------------------------------------------------------------------------- > 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/
