Re: [WISPA] Airports a Problem?
We shoot across an airport (the big ones as well) with a bunch of 5.8 stuff, but I believe we needed to get clearance from the airport and maybe the FAA before installing. Otherwise we've had zero problems with interference from their systems. I would start by calling or gong to see the person who runs the airport first and explain what you would like to do. I don't recall it being a big deal to get permission from the Airport. Robert West wrote: Looking at a possible path but we would run right down the runway of an airport. Not small planes, the big ones! Towers are 300' on both ends.. I don't see any issues here but have no idea what to expect from the RF over that thing. They are fully automated with all the latest in radio controlled landing systems. Anyone ever have issues with this? It's a perfect path for us so it would be my luck this thing might cause me issues. Would 5ghz be out of the question? Thanks Robert West Just Micro Digital Services 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] Airports a Problem?
If your equipment is on airport property proper you need approval to place there. You do not need approval to shoot accross the airport. Now depending on your proximity to air traffic you may experience packet loss but unless your path was where aircraft may park or taxi I would not expect loss of link. As for interference from radar, that's a crap shoot and depends what band you are on and what is colocated at the airport. Bob Sent from my Verizon Wireless BlackBerry -Original Message- From: Bret Clark bcl...@spectraaccess.com Date: Wed, 30 Sep 2009 06:55:46 To: WISPA General Listwireless@wispa.org Subject: Re: [WISPA] Airports a Problem? We shoot across an airport (the big ones as well) with a bunch of 5.8 stuff, but I believe we needed to get clearance from the airport and maybe the FAA before installing. Otherwise we've had zero problems with interference from their systems. I would start by calling or gong to see the person who runs the airport first and explain what you would like to do. I don't recall it being a big deal to get permission from the Airport. Robert West wrote: Looking at a possible path but we would run right down the runway of an airport. Not small planes, the big ones! Towers are 300' on both ends.. I don't see any issues here but have no idea what to expect from the RF over that thing. They are fully automated with all the latest in radio controlled landing systems. Anyone ever have issues with this? It's a perfect path for us so it would be my luck this thing might cause me issues. Would 5ghz be out of the question? Thanks Robert West Just Micro Digital Services 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] Airports a Problem?
Agreed But in this case he said they were going on 300' towers on each side and because they were already existing I did not touch on structure construction and FAA Letters of Determination. And I assumed they were existing structures because people don't build 300' towers every day for a WISP system. :-) Bob Sent from my Verizon Wireless BlackBerry -Original Message- From: Bret Clark bcl...@spectraaccess.com Date: Wed, 30 Sep 2009 08:54:22 To: WISPA General Listwireless@wispa.org Subject: Re: [WISPA] Airports a Problem? I somewhat disagree, in terms of the signal, no you don't need approval, but to put a wireless network up with antenna's near any airport the height of the antenna is governed by the FAA, you need their approval from them in terms of an antenna perspective. Antenna heights are governed by distance from runways; give them the exact distances from runways, then they tell you the height allowed at that location. On Wed, 2009-09-30 at 12:31 +, lakel...@gbcx.net wrote: If your equipment is on airport property proper you need approval to place there. You do not need approval to shoot accross the airport. Now depending on your proximity to air traffic you may experience packet loss but unless your path was where aircraft may park or taxi I would not expect loss of link. As for interference from radar, that's a crap shoot and depends what band you are on and what is colocated at the airport. Bob Sent from my Verizon Wireless BlackBerry -Original Message- From: Bret Clark bcl...@spectraaccess.com Date: Wed, 30 Sep 2009 06:55:46 To: WISPA General Listwireless@wispa.org Subject: Re: [WISPA] Airports a Problem? We shoot across an airport (the big ones as well) with a bunch of 5.8 stuff, but I believe we needed to get clearance from the airport and maybe the FAA before installing. Otherwise we've had zero problems with interference from their systems. I would start by calling or gong to see the person who runs the airport first and explain what you would like to do. I don't recall it being a big deal to get permission from the Airport. Robert West wrote: Looking at a possible path but we would run right down the runway of an airport. Not small planes, the big ones! Towers are 300' on both ends.. I don't see any issues here but have no idea what to expect from the RF over that thing. They are fully automated with all the latest in radio controlled landing systems. Anyone ever have issues with this? It's a perfect path for us so it would be my luck this thing might cause me issues. Would 5ghz be out of the question? Thanks Robert West Just Micro Digital Services 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/ 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] Airports a Problem?
This path I'm considering is 33 miles in length and the airport is 11 miles from the closest tower. Both towers are existing structures so their placement is okay but I was concerned when I saw that the path runs right down runway 22R. Sigh. so every plane approaching that runway will be smack in the signal at almost 300 feet 11 miles out from the tower. Now, this airport isn't as busy as it used to be, it was the DHL hub here in Ohio, but they are trying to get it back in operation again either as a package sort hub or maintenance center. Either way, lots of big planes over there. -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Bret Clark Sent: Wednesday, September 30, 2009 8:54 AM To: WISPA General List Subject: Re: [WISPA] Airports a Problem? I somewhat disagree, in terms of the signal, no you don't need approval, but to put a wireless network up with antenna's near any airport the height of the antenna is governed by the FAA, you need their approval from them in terms of an antenna perspective. Antenna heights are governed by distance from runways; give them the exact distances from runways, then they tell you the height allowed at that location. On Wed, 2009-09-30 at 12:31 +, lakel...@gbcx.net wrote: If your equipment is on airport property proper you need approval to place there. You do not need approval to shoot accross the airport. Now depending on your proximity to air traffic you may experience packet loss but unless your path was where aircraft may park or taxi I would not expect loss of link. As for interference from radar, that's a crap shoot and depends what band you are on and what is colocated at the airport. Bob Sent from my Verizon Wireless BlackBerry -Original Message- From: Bret Clark bcl...@spectraaccess.com Date: Wed, 30 Sep 2009 06:55:46 To: WISPA General Listwireless@wispa.org Subject: Re: [WISPA] Airports a Problem? We shoot across an airport (the big ones as well) with a bunch of 5.8 stuff, but I believe we needed to get clearance from the airport and maybe the FAA before installing. Otherwise we've had zero problems with interference from their systems. I would start by calling or gong to see the person who runs the airport first and explain what you would like to do. I don't recall it being a big deal to get permission from the Airport. Robert West wrote: Looking at a possible path but we would run right down the runway of an airport. Not small planes, the big ones! Towers are 300' on both ends.. I don't see any issues here but have no idea what to expect from the RF over that thing. They are fully automated with all the latest in radio controlled landing systems. Anyone ever have issues with this? It's a perfect path for us so it would be my luck this thing might cause me issues. Would 5ghz be out of the question? Thanks Robert West Just Micro Digital Services 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/ 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
Re: [WISPA] Airports a Problem?
Unless the base of the runway is in the Fresnel zone... an airplane flying through it is only going to cause a minor interruption... maybe a few seconds? I would bet it is going to be okay Daniel White 3-dB Networks http://www.3dbnetworks.com -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Robert West Sent: Wednesday, September 30, 2009 7:23 AM To: bcl...@spectraaccess.com; 'WISPA General List' Subject: Re: [WISPA] Airports a Problem? This path I'm considering is 33 miles in length and the airport is 11 miles from the closest tower. Both towers are existing structures so their placement is okay but I was concerned when I saw that the path runs right down runway 22R. Sigh. so every plane approaching that runway will be smack in the signal at almost 300 feet 11 miles out from the tower. Now, this airport isn't as busy as it used to be, it was the DHL hub here in Ohio, but they are trying to get it back in operation again either as a package sort hub or maintenance center. Either way, lots of big planes over there. -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Bret Clark Sent: Wednesday, September 30, 2009 8:54 AM To: WISPA General List Subject: Re: [WISPA] Airports a Problem? I somewhat disagree, in terms of the signal, no you don't need approval, but to put a wireless network up with antenna's near any airport the height of the antenna is governed by the FAA, you need their approval from them in terms of an antenna perspective. Antenna heights are governed by distance from runways; give them the exact distances from runways, then they tell you the height allowed at that location. On Wed, 2009-09-30 at 12:31 +, lakel...@gbcx.net wrote: If your equipment is on airport property proper you need approval to place there. You do not need approval to shoot accross the airport. Now depending on your proximity to air traffic you may experience packet loss but unless your path was where aircraft may park or taxi I would not expect loss of link. As for interference from radar, that's a crap shoot and depends what band you are on and what is colocated at the airport. Bob Sent from my Verizon Wireless BlackBerry -Original Message- From: Bret Clark bcl...@spectraaccess.com Date: Wed, 30 Sep 2009 06:55:46 To: WISPA General Listwireless@wispa.org Subject: Re: [WISPA] Airports a Problem? We shoot across an airport (the big ones as well) with a bunch of 5.8 stuff, but I believe we needed to get clearance from the airport and maybe the FAA before installing. Otherwise we've had zero problems with interference from their systems. I would start by calling or gong to see the person who runs the airport first and explain what you would like to do. I don't recall it being a big deal to get permission from the Airport. Robert West wrote: Looking at a possible path but we would run right down the runway of an airport. Not small planes, the big ones! Towers are 300' on both ends.. I don't see any issues here but have no idea what to expect from the RF over that thing. They are fully automated with all the latest in radio controlled landing systems. Anyone ever have issues with this? It's a perfect path for us so it would be my luck this thing might cause me issues. Would 5ghz be out of the question? Thanks Robert West Just Micro Digital Services 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
Re: [WISPA] Airports a Problem?
Won't be a problem. Planes will not cause you an issue unless they fly into the tower. I have a link accross a runway at 5Ghz and jets pass through the path all day long without a glitch. And the path is only about 2 miles long. Bob Sent from my Verizon Wireless BlackBerry -Original Message- From: Robert West robert.w...@just-micro.com Date: Wed, 30 Sep 2009 09:22:40 To: bcl...@spectraaccess.com; 'WISPA General List'wireless@wispa.org Subject: Re: [WISPA] Airports a Problem? This path I'm considering is 33 miles in length and the airport is 11 miles from the closest tower. Both towers are existing structures so their placement is okay but I was concerned when I saw that the path runs right down runway 22R. Sigh. so every plane approaching that runway will be smack in the signal at almost 300 feet 11 miles out from the tower. Now, this airport isn't as busy as it used to be, it was the DHL hub here in Ohio, but they are trying to get it back in operation again either as a package sort hub or maintenance center. Either way, lots of big planes over there. -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Bret Clark Sent: Wednesday, September 30, 2009 8:54 AM To: WISPA General List Subject: Re: [WISPA] Airports a Problem? I somewhat disagree, in terms of the signal, no you don't need approval, but to put a wireless network up with antenna's near any airport the height of the antenna is governed by the FAA, you need their approval from them in terms of an antenna perspective. Antenna heights are governed by distance from runways; give them the exact distances from runways, then they tell you the height allowed at that location. On Wed, 2009-09-30 at 12:31 +, lakel...@gbcx.net wrote: If your equipment is on airport property proper you need approval to place there. You do not need approval to shoot accross the airport. Now depending on your proximity to air traffic you may experience packet loss but unless your path was where aircraft may park or taxi I would not expect loss of link. As for interference from radar, that's a crap shoot and depends what band you are on and what is colocated at the airport. Bob Sent from my Verizon Wireless BlackBerry -Original Message- From: Bret Clark bcl...@spectraaccess.com Date: Wed, 30 Sep 2009 06:55:46 To: WISPA General Listwireless@wispa.org Subject: Re: [WISPA] Airports a Problem? We shoot across an airport (the big ones as well) with a bunch of 5.8 stuff, but I believe we needed to get clearance from the airport and maybe the FAA before installing. Otherwise we've had zero problems with interference from their systems. I would start by calling or gong to see the person who runs the airport first and explain what you would like to do. I don't recall it being a big deal to get permission from the Airport. Robert West wrote: Looking at a possible path but we would run right down the runway of an airport. Not small planes, the big ones! Towers are 300' on both ends.. I don't see any issues here but have no idea what to expect from the RF over that thing. They are fully automated with all the latest in radio controlled landing systems. Anyone ever have issues with this? It's a perfect path for us so it would be my luck this thing might cause me issues. Would 5ghz be out of the question? Thanks Robert West Just Micro Digital Services 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
Re: [WISPA] Airports a Problem?
As far as I can tell, the FZ is more than good there. My biggest concerns were having a big obstruction moving through it and the RF being put out by both the aircraft and the airport. Before DHL pulled out they were landing a plane every 30 seconds starting around 10 pm and then they would take off every 30 seconds soon after. Went on all night until 6 or 7 am. I know that all the systems aren't supposed to interfere with each other but that sometimes isn't the case. I have no fear of messing up their systems, they are certainly shielded to the good from outside issues but I don't have that luxury. But it sounds like no one has had any issues so we may at least test it out and see how it goes. This is the best path I've ever worked out, slam dunk as they say but there had to be a wild card in it. :) Thanks! Bob- -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of 3-dB Networks Sent: Wednesday, September 30, 2009 9:35 AM To: 'WISPA General List' Subject: Re: [WISPA] Airports a Problem? Unless the base of the runway is in the Fresnel zone... an airplane flying through it is only going to cause a minor interruption... maybe a few seconds? I would bet it is going to be okay Daniel White 3-dB Networks http://www.3dbnetworks.com -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Robert West Sent: Wednesday, September 30, 2009 7:23 AM To: bcl...@spectraaccess.com; 'WISPA General List' Subject: Re: [WISPA] Airports a Problem? This path I'm considering is 33 miles in length and the airport is 11 miles from the closest tower. Both towers are existing structures so their placement is okay but I was concerned when I saw that the path runs right down runway 22R. Sigh. so every plane approaching that runway will be smack in the signal at almost 300 feet 11 miles out from the tower. Now, this airport isn't as busy as it used to be, it was the DHL hub here in Ohio, but they are trying to get it back in operation again either as a package sort hub or maintenance center. Either way, lots of big planes over there. -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Bret Clark Sent: Wednesday, September 30, 2009 8:54 AM To: WISPA General List Subject: Re: [WISPA] Airports a Problem? I somewhat disagree, in terms of the signal, no you don't need approval, but to put a wireless network up with antenna's near any airport the height of the antenna is governed by the FAA, you need their approval from them in terms of an antenna perspective. Antenna heights are governed by distance from runways; give them the exact distances from runways, then they tell you the height allowed at that location. On Wed, 2009-09-30 at 12:31 +, lakel...@gbcx.net wrote: If your equipment is on airport property proper you need approval to place there. You do not need approval to shoot accross the airport. Now depending on your proximity to air traffic you may experience packet loss but unless your path was where aircraft may park or taxi I would not expect loss of link. As for interference from radar, that's a crap shoot and depends what band you are on and what is colocated at the airport. Bob Sent from my Verizon Wireless BlackBerry -Original Message- From: Bret Clark bcl...@spectraaccess.com Date: Wed, 30 Sep 2009 06:55:46 To: WISPA General Listwireless@wispa.org Subject: Re: [WISPA] Airports a Problem? We shoot across an airport (the big ones as well) with a bunch of 5.8 stuff, but I believe we needed to get clearance from the airport and maybe the FAA before installing. Otherwise we've had zero problems with interference from their systems. I would start by calling or gong to see the person who runs the airport first and explain what you would like to do. I don't recall it being a big deal to get permission from the Airport. Robert West wrote: Looking at a possible path but we would run right down the runway of an airport. Not small planes, the big ones! Towers are 300' on both ends.. I don't see any issues here but have no idea what to expect from the RF over that thing. They are fully automated with all the latest in radio controlled landing systems. Anyone ever have issues with this? It's a perfect path for us so it would be my luck this thing might cause me issues. Would 5ghz be out of the question? Thanks Robert West Just Micro Digital Services 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
Re: [WISPA] Airports a Problem?
That makes me feel a bit more confident then. Do they pass through it on approach or cross the runway? The forward facing radar of the plane looking right at me for a few seconds didn't sound good. -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of lakel...@gbcx.net Sent: Wednesday, September 30, 2009 9:41 AM To: WISPA General List Subject: Re: [WISPA] Airports a Problem? Won't be a problem. Planes will not cause you an issue unless they fly into the tower. I have a link accross a runway at 5Ghz and jets pass through the path all day long without a glitch. And the path is only about 2 miles long. Bob Sent from my Verizon Wireless BlackBerry -Original Message- From: Robert West robert.w...@just-micro.com Date: Wed, 30 Sep 2009 09:22:40 To: bcl...@spectraaccess.com; 'WISPA General List'wireless@wispa.org Subject: Re: [WISPA] Airports a Problem? This path I'm considering is 33 miles in length and the airport is 11 miles from the closest tower. Both towers are existing structures so their placement is okay but I was concerned when I saw that the path runs right down runway 22R. Sigh. so every plane approaching that runway will be smack in the signal at almost 300 feet 11 miles out from the tower. Now, this airport isn't as busy as it used to be, it was the DHL hub here in Ohio, but they are trying to get it back in operation again either as a package sort hub or maintenance center. Either way, lots of big planes over there. -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Bret Clark Sent: Wednesday, September 30, 2009 8:54 AM To: WISPA General List Subject: Re: [WISPA] Airports a Problem? I somewhat disagree, in terms of the signal, no you don't need approval, but to put a wireless network up with antenna's near any airport the height of the antenna is governed by the FAA, you need their approval from them in terms of an antenna perspective. Antenna heights are governed by distance from runways; give them the exact distances from runways, then they tell you the height allowed at that location. On Wed, 2009-09-30 at 12:31 +, lakel...@gbcx.net wrote: If your equipment is on airport property proper you need approval to place there. You do not need approval to shoot accross the airport. Now depending on your proximity to air traffic you may experience packet loss but unless your path was where aircraft may park or taxi I would not expect loss of link. As for interference from radar, that's a crap shoot and depends what band you are on and what is colocated at the airport. Bob Sent from my Verizon Wireless BlackBerry -Original Message- From: Bret Clark bcl...@spectraaccess.com Date: Wed, 30 Sep 2009 06:55:46 To: WISPA General Listwireless@wispa.org Subject: Re: [WISPA] Airports a Problem? We shoot across an airport (the big ones as well) with a bunch of 5.8 stuff, but I believe we needed to get clearance from the airport and maybe the FAA before installing. Otherwise we've had zero problems with interference from their systems. I would start by calling or gong to see the person who runs the airport first and explain what you would like to do. I don't recall it being a big deal to get permission from the Airport. Robert West wrote: Looking at a possible path but we would run right down the runway of an airport. Not small planes, the big ones! Towers are 300' on both ends.. I don't see any issues here but have no idea what to expect from the RF over that thing. They are fully automated with all the latest in radio controlled landing systems. Anyone ever have issues with this? It's a perfect path for us so it would be my luck this thing might cause me issues. Would 5ghz be out of the question? Thanks Robert West Just Micro Digital Services 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
Re: [WISPA] Airports a Problem?
Agreed. Planes flying through the Fresnel zone will have more of an impact on B type modulation than on say G. You might see selective fading because of multipath, but OFDM or some other robust modulation technique will recover from an aircraft on approach at 250 mph flying through the Fresnel zone. Just make sure your links have sufficient fade margin. At 08:35 AM 9/30/2009, you wrote: Unless the base of the runway is in the Fresnel zone... an airplane flying through it is only going to cause a minor interruption... maybe a few seconds? I would bet it is going to be okay 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] Airports a Problem?
I have a 5.8 link over an airport and a 900ap next door to the airport. No problems. Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 When you have eliminated the impossible, that which remains, however improbable, must be the truth. --- Sir Arthur Conan Doyle On Wed, Sep 30, 2009 at 9:57 AM, Mike m...@aweiowa.com wrote: Agreed. Planes flying through the Fresnel zone will have more of an impact on B type modulation than on say G. You might see selective fading because of multipath, but OFDM or some other robust modulation technique will recover from an aircraft on approach at 250 mph flying through the Fresnel zone. Just make sure your links have sufficient fade margin. At 08:35 AM 9/30/2009, you wrote: Unless the base of the runway is in the Fresnel zone... an airplane flying through it is only going to cause a minor interruption... maybe a few seconds? I would bet it is going to be okay 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] Airports a Problem?
Robert: I suggest grabbing your spectrum analyzer to look at the active frequencies as planes are landing and taking off. If you're 11 miles away from the airport and you are not stomping on a frequency used by any of the navigation systems you should be fine. I've run into Radar signals in the 4.8 to 5.2 bands, but nothing higher and most aircraft communications are in the Mhz, not Ghz. Clay Perreault Robert West wrote: This path I'm considering is 33 miles in length and the airport is 11 miles from the closest tower. Both towers are existing structures so their placement is okay but I was concerned when I saw that the path runs right down runway 22R. Sigh. so every plane approaching that runway will be smack in the signal at almost 300 feet 11 miles out from the tower. Now, this airport isn't as busy as it used to be, it was the DHL hub here in Ohio, but they are trying to get it back in operation again either as a package sort hub or maintenance center. Either way, lots of big planes over there. -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Bret Clark Sent: Wednesday, September 30, 2009 8:54 AM To: WISPA General List Subject: Re: [WISPA] Airports a Problem? I somewhat disagree, in terms of the signal, no you don't need approval, but to put a wireless network up with antenna's near any airport the height of the antenna is governed by the FAA, you need their approval from them in terms of an antenna perspective. Antenna heights are governed by distance from runways; give them the exact distances from runways, then they tell you the height allowed at that location. On Wed, 2009-09-30 at 12:31 +, lakel...@gbcx.net wrote: If your equipment is on airport property proper you need approval to place there. You do not need approval to shoot accross the airport. Now depending on your proximity to air traffic you may experience packet loss but unless your path was where aircraft may park or taxi I would not expect loss of link. As for interference from radar, that's a crap shoot and depends what band you are on and what is colocated at the airport. Bob Sent from my Verizon Wireless BlackBerry -Original Message- From: Bret Clark bcl...@spectraaccess.com Date: Wed, 30 Sep 2009 06:55:46 To: WISPA General Listwireless@wispa.org Subject: Re: [WISPA] Airports a Problem? We shoot across an airport (the big ones as well) with a bunch of 5.8 stuff, but I believe we needed to get clearance from the airport and maybe the FAA before installing. Otherwise we've had zero problems with interference from their systems. I would start by calling or gong to see the person who runs the airport first and explain what you would like to do. I don't recall it being a big deal to get permission from the Airport. Robert West wrote: Looking at a possible path but we would run right down the runway of an airport. Not small planes, the big ones! Towers are 300' on both ends.. I don't see any issues here but have no idea what to expect from the RF over that thing. They are fully automated with all the latest in radio controlled landing systems. Anyone ever have issues with this? It's a perfect path for us so it would be my luck this thing might cause me issues. Would 5ghz be out of the question? Thanks Robert West Just Micro Digital Services 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
