Re: [WISPA] Licensed 11ghz Link Issues, Need Advice
Sounds like a side lobe...we had the same issue...link was coming in at -70...link budget said -50...finally got it out of the side lobe and within 1-2 dB of the link path. Regards, Chuck On Fri, Nov 5, 2010 at 9:12 AM, Bill Gaylord bi...@torchlake.com wrote: 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/
Re: [WISPA] Licensed 11ghz Link Issues, Need Advice
15-20db off typically means cross polarization. Have you double and triple checked they are both on the same polarity? Brad -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Bill Gaylord Sent: Friday, November 05, 2010 8:13 AM To: WISPA General List 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/
Re: [WISPA] Licensed 11ghz Link Issues, Need Advice
Are you at full tx power or full modulation? 256qam will take out something like 7dbm. On Nov 5, 2010 9:12 AM, Bill Gaylord bi...@torchlake.com wrote: 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/
Re: [WISPA] Licensed 11ghz Link Issues, Need Advice
Yes, I have. Thanks. That is the same thing I had though of the first time around. Bill Gaylord, President COLI Inc. On 11/5/2010 9:38 AM, Brad Belton wrote: 15-20db off typically means cross polarization. Have you double and triple checked they are both on the same polarity? Brad -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Bill Gaylord Sent: Friday, November 05, 2010 8:13 AM To: WISPA General List 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/ 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/
Re: [WISPA] Licensed 11ghz Link Issues, Need Advice
OK, I will try the Vertical Alignment again to see if it is on a vertical side lobe. I will give that a try next week and see what happens. Thanks. Bill Gaylord, President COLI Inc. On 11/5/2010 9:37 AM, Chuck Hogg wrote: Sounds like a side lobe...we had the same issue...link was coming in at -70...link budget said -50...finally got it out of the side lobe and within 1-2 dB of the link path. Regards, Chuck On Fri, Nov 5, 2010 at 9:12 AM, Bill Gaylordbi...@torchlake.com wrote: 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/ 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/
Re: [WISPA] Licensed 11ghz Link Issues, Need Advice
Bill You can bang the physical dish up pretty good and not need to worry. The feedhorn is the most critical unit. Which Dragonwave radio are you using? Sent via DROID on Verizon Wireless -Original message- From: Brad Belton b...@belwave.com To: 'WISPA General List' wireless@wispa.org Sent: Fri, Nov 5, 2010 13:38:55 GMT+00:00 Subject: Re: [WISPA] Licensed 11ghz Link Issues, Need Advice 15-20db off typically means cross polarization. Have you double and triple checked they are both on the same polarity? Brad -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Bill Gaylord Sent: Friday, November 05, 2010 8:13 AM To: WISPA General List 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/ 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/
Re: [WISPA] Licensed 11ghz Link Issues, Need Advice
It is the horizon 150Mbps. Bill Gaylord, President COLI Inc. On 11/5/2010 12:28 PM, Bob Moldashel wrote: Bill You can bang the physical dish up pretty good and not need to worry. The feedhorn is the most critical unit. Which Dragonwave radio are you using? /Sent via DROID on Verizon Wireless/ -Original message- *From: *Brad Belton b...@belwave.com* To: *'WISPA General List' wireless@wispa.org* Sent: *Fri, Nov 5, 2010 13:38:55 GMT+00:00* Subject: *Re: [WISPA] Licensed 11ghz Link Issues, Need Advice 15-20db off typically means cross polarization. Have you double and triple checked they are both on the same polarity? Brad -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Bill Gaylord Sent: Friday, November 05, 2010 8:13 AM To: WISPA General List 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/ 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/
Re: [WISPA] Licensed 11ghz Link Issues, Need Advice
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/
Re: [WISPA] Licensed 11ghz Link Issues, Need Advice
No Coax, the radio mounts directly to the antenna. I will climb myself and re-peak the vertical alignment Monday. Thanks Tom. Bill On 11/5/2010 1:25 PM, Tom DeReggi wrote: 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 Gaylordbi...@torchlake.com To: WISPA General Listwireless@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/ 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/
