Re: [WISPA] 5.8 Omni
It's not as trivial as you might think. Getting those things to couple just right is almost an art. If you've ever taken one of those things apart, you'll know what I'm talking about. Most of the ones I've seen appear to have the dielectric between the striplines hand cut and the thicknesses of the material even vary inside the same device. It probably has something to do with the materials involved, their real world impedance, and and manufacturing quality. It's easy to put it on paper (more like in Matlab), run the calcs and determine what you are going to need, but cutting the copper tape, and trying to get the spacing uniform when you are talking about fractions of a mm, is just harder to accomplish than you realize. You are right though, it would be better to sectorize if you are going to go to the trouble of putting up two antennas. I was just pointing out a way to get a decent omni pattern with close to the gain he was looking for. Not sure why anyone would actually do it though in this realm where adding another wifi board and radio is only a couple hundred bucks. We did it on some remote cell sites along rural highways strictly for coverage reasons. Adding another CDMA or GSM sector is a bit more costly than adding a wifi radio. Cameron Mike wrote: I nosed around the Internet looking at the various designs of stripline dividers. It is almost trivial to make one. But the more I think about it, if I am going to coordinate a climb to hang a pair of antennae, I'd probably just carry two radios up and run them separate and sectorized. If both feeds are exactly the same, half the power would go to each. Receive should be symmetrical, and only slightly attenuated from a single antenna deployment. But, a point of failure, and may be false economy. Mike At 02:13 PM 10/29/2009, you wrote: There are several manufacturers like IF Engineering, Meca, RF Lamda, and such of quality combiner/dividers, but pretty much any RF Design group that manufactures quality hybrid stripline dividers would probably work. These are typically better than using something like a T to split/combine signals. What you want is something with low insertion loss and at least 20 dB of isolation between ports. Cameron Mike wrote: Cameron: Your prowess as an antenna designer is well known. Define a decent splitter, and where one might find one. I think that solution would be usable to a wide group on this list. Mike At 12:05 PM 10/29/2009, you wrote: That is not really an omni. It is three sectors meant to be fed with three different radios. That being said, and in regard to my last post, a back to back array with a couple of 90's fed correctly would yield a pretty nice omni pattern that you could get close to 16 dB. Two 18 dB sectors with a decent splitter would yield a 15 dB omni. It would just be pretty big as far as antennas go. Cameron Michael Baird wrote: What about sectorized omni arrays, any of those out there at 5.8? An example would be http://www.netkrom.com/prod_ant_5.1-5.8ghz_vpol_sector_omni.html Just can't find anybody who sells it to get an idea on pricing. Regards Michael Baird You won't find a 5 GHz omni at that gain, and if you do, I'd call BS. The vertical beamwidth on an 16dB omni antenna at almost any frequency will be so flat that the antenna would be practically useless. We make a 9-10dB 5.7-5.8 H-pol omni for ourselves, but very few as we just don't use that many. If you need H-pol, hit me offlist. Otherwise, there are plenty of good 5 GHz 9 and 10 dB V-pol omni's commercially available. Cameron Michael Baird wrote: Tom, This would not be serving any customers, all the locations will be at least 100ft+. Regards Michael Baird I'd be cautious about those Pancake shaped OMNI patterns at 16 DB. Tom DeReggi RapidDSL Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: Michael Baird m...@tc3net.com To: WISPA General List wireless@wispa.org Sent: Wednesday, October 28, 2009 11:27 PM Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird 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/ -- Internal Virus Database is out-of-date. Checked by AVG. Version: 7.5.560 / Virus Database: 270.12.26/2116 - Release Date:
Re: [WISPA] 5.8 Omni
I'd be cautious about those Pancake shaped OMNI patterns at 16 DB. Tom DeReggi RapidDSL Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: Michael Baird m...@tc3net.com To: WISPA General List wireless@wispa.org Sent: Wednesday, October 28, 2009 11:27 PM Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird 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/ -- Internal Virus Database is out-of-date. Checked by AVG. Version: 7.5.560 / Virus Database: 270.12.26/2116 - Release Date: 5/15/2009 6:16 AM 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] 5.8 Omni
MTI -Cameron -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Michael Baird Sent: Wednesday, October 28, 2009 11:27 PM To: WISPA General List Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird 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] 5.8 Omni
This one is 15dBi minimum from MTI... http://www.mtiwe.com/uploads/product/239.pdf I'd expect to pay somewhere around $550 or so for it though Other than that I have only seen 10 and 12dBi ones typically. Daniel White 3-dB Networks http://www.3dbnetworks.com -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Michael Baird Sent: Wednesday, October 28, 2009 9:27 PM To: WISPA General List Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird 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] 5.8 Omni
You won't find a 16dbi omni in 5.8ghz, I've never seen one. We have used a 12dbi omni and it works well. Once thing I have noticed is that 5.8ghz high gain omni work better at the lower end of the 5.8 band. -Cameron -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of 3-dB Networks Sent: Thursday, October 29, 2009 9:33 AM To: 'WISPA General List' Subject: Re: [WISPA] 5.8 Omni This one is 15dBi minimum from MTI... http://www.mtiwe.com/uploads/product/239.pdf I'd expect to pay somewhere around $550 or so for it though Other than that I have only seen 10 and 12dBi ones typically. Daniel White 3-dB Networks http://www.3dbnetworks.com -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Michael Baird Sent: Wednesday, October 28, 2009 9:27 PM To: WISPA General List Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird --- - 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] 5.8 Omni
I have some slightly used 15dB omni's if you need any. - Original Message From: Cameron Kilton c...@midcoast.com To: WISPA General List wireless@wispa.org Sent: Thu, October 29, 2009 7:55:44 AM Subject: Re: [WISPA] 5.8 Omni MTI -Cameron -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Michael Baird Sent: Wednesday, October 28, 2009 11:27 PM To: WISPA General List Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird 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] 5.8 Omni
Yeah. I don't use any omni's over 8 or 9 dB. Well, I guess I have one 10 out there, but I keep taking it out The ONLY time I've suggested people use higher gain ones is when they are on a rooftop that's the same height as everyone else or down in a valley with customers up the sides. marlon - Original Message - From: Tom DeReggi wirelessn...@rapiddsl.net To: WISPA General List wireless@wispa.org Sent: Thursday, October 29, 2009 12:08 AM Subject: Re: [WISPA] 5.8 Omni I'd be cautious about those Pancake shaped OMNI patterns at 16 DB. Tom DeReggi RapidDSL Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: Michael Baird m...@tc3net.com To: WISPA General List wireless@wispa.org Sent: Wednesday, October 28, 2009 11:27 PM Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird 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/ -- Internal Virus Database is out-of-date. Checked by AVG. Version: 7.5.560 / Virus Database: 270.12.26/2116 - Release Date: 5/15/2009 6:16 AM 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] 5.8 Omni
I also have a box load of maxrad 9dB omni antennas if anyone needs them. - Original Message From: Marlon K. Schafer o...@odessaoffice.com To: WISPA General List wireless@wispa.org Sent: Thu, October 29, 2009 8:48:50 AM Subject: Re: [WISPA] 5.8 Omni Yeah. I don't use any omni's over 8 or 9 dB. Well, I guess I have one 10 out there, but I keep taking it out The ONLY time I've suggested people use higher gain ones is when they are on a rooftop that's the same height as everyone else or down in a valley with customers up the sides. marlon - Original Message - From: Tom DeReggi wirelessn...@rapiddsl.net To: WISPA General List wireless@wispa.org Sent: Thursday, October 29, 2009 12:08 AM Subject: Re: [WISPA] 5.8 Omni I'd be cautious about those Pancake shaped OMNI patterns at 16 DB. Tom DeReggi RapidDSL Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: Michael Baird m...@tc3net.com To: WISPA General List wireless@wispa.org Sent: Wednesday, October 28, 2009 11:27 PM Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird 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/ -- Internal Virus Database is out-of-date. Checked by AVG. Version: 7.5.560 / Virus Database: 270.12.26/2116 - Release Date: 5/15/2009 6:16 AM 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] 5.8 Omni
Tom, This would not be serving any customers, all the locations will be at least 100ft+. Regards Michael Baird I'd be cautious about those Pancake shaped OMNI patterns at 16 DB. Tom DeReggi RapidDSL Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: Michael Baird m...@tc3net.com To: WISPA General List wireless@wispa.org Sent: Wednesday, October 28, 2009 11:27 PM Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird 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/ -- Internal Virus Database is out-of-date. Checked by AVG. Version: 7.5.560 / Virus Database: 270.12.26/2116 - Release Date: 5/15/2009 6:16 AM 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] 5.8 Omni
You won't find a 5 GHz omni at that gain, and if you do, I'd call BS. The vertical beamwidth on an 16dB omni antenna at almost any frequency will be so flat that the antenna would be practically useless. We make a 9-10dB 5.7-5.8 H-pol omni for ourselves, but very few as we just don't use that many. If you need H-pol, hit me offlist. Otherwise, there are plenty of good 5 GHz 9 and 10 dB V-pol omni's commercially available. Cameron Michael Baird wrote: Tom, This would not be serving any customers, all the locations will be at least 100ft+. Regards Michael Baird I'd be cautious about those Pancake shaped OMNI patterns at 16 DB. Tom DeReggi RapidDSL Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: Michael Baird m...@tc3net.com To: WISPA General List wireless@wispa.org Sent: Wednesday, October 28, 2009 11:27 PM Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird 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/ -- Internal Virus Database is out-of-date. Checked by AVG. Version: 7.5.560 / Virus Database: 270.12.26/2116 - Release Date: 5/15/2009 6:16 AM 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] 5.8 Omni
What about sectorized omni arrays, any of those out there at 5.8? An example would be http://www.netkrom.com/prod_ant_5.1-5.8ghz_vpol_sector_omni.html Just can't find anybody who sells it to get an idea on pricing. Regards Michael Baird You won't find a 5 GHz omni at that gain, and if you do, I'd call BS. The vertical beamwidth on an 16dB omni antenna at almost any frequency will be so flat that the antenna would be practically useless. We make a 9-10dB 5.7-5.8 H-pol omni for ourselves, but very few as we just don't use that many. If you need H-pol, hit me offlist. Otherwise, there are plenty of good 5 GHz 9 and 10 dB V-pol omni's commercially available. Cameron Michael Baird wrote: Tom, This would not be serving any customers, all the locations will be at least 100ft+. Regards Michael Baird I'd be cautious about those Pancake shaped OMNI patterns at 16 DB. Tom DeReggi RapidDSL Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: Michael Baird m...@tc3net.com To: WISPA General List wireless@wispa.org Sent: Wednesday, October 28, 2009 11:27 PM Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird 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/ -- Internal Virus Database is out-of-date. Checked by AVG. Version: 7.5.560 / Virus Database: 270.12.26/2116 - Release Date: 5/15/2009 6:16 AM 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] 5.8 Omni
2009/10/29 Michael Baird m...@tc3net.com: What about sectorized omni arrays, any of those out there at 5.8? An example would be http://www.netkrom.com/prod_ant_5.1-5.8ghz_vpol_sector_omni.html Just can't find anybody who sells it to get an idea on pricing. I would be very concerned about antenna isolation with that. Using it with a radio that does not support transmit sync would be a nightmare. 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] 5.8 Omni
That is not really an omni. It is three sectors meant to be fed with three different radios. That being said, and in regard to my last post, a back to back array with a couple of 90's fed correctly would yield a pretty nice omni pattern that you could get close to 16 dB. Two 18 dB sectors with a decent splitter would yield a 15 dB omni. It would just be pretty big as far as antennas go. Cameron Michael Baird wrote: What about sectorized omni arrays, any of those out there at 5.8? An example would be http://www.netkrom.com/prod_ant_5.1-5.8ghz_vpol_sector_omni.html Just can't find anybody who sells it to get an idea on pricing. Regards Michael Baird You won't find a 5 GHz omni at that gain, and if you do, I'd call BS. The vertical beamwidth on an 16dB omni antenna at almost any frequency will be so flat that the antenna would be practically useless. We make a 9-10dB 5.7-5.8 H-pol omni for ourselves, but very few as we just don't use that many. If you need H-pol, hit me offlist. Otherwise, there are plenty of good 5 GHz 9 and 10 dB V-pol omni's commercially available. Cameron Michael Baird wrote: Tom, This would not be serving any customers, all the locations will be at least 100ft+. Regards Michael Baird I'd be cautious about those Pancake shaped OMNI patterns at 16 DB. Tom DeReggi RapidDSL Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: Michael Baird m...@tc3net.com To: WISPA General List wireless@wispa.org Sent: Wednesday, October 28, 2009 11:27 PM Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird 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/ -- Internal Virus Database is out-of-date. Checked by AVG. Version: 7.5.560 / Virus Database: 270.12.26/2116 - Release Date: 5/15/2009 6:16 AM 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] 5.8 Omni
Actually I think this antenna would work perfect for what he wants http://www.mtiwe.com/uploads/product/239.pdf And I doubt that spec sheet is BS (but then again I don't build antennas myself :-) Daniel White 3-dB Networks http://www.3dbnetworks.com -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of ccrum Sent: Thursday, October 29, 2009 9:48 AM To: WISPA General List Subject: Re: [WISPA] 5.8 Omni You won't find a 5 GHz omni at that gain, and if you do, I'd call BS. The vertical beamwidth on an 16dB omni antenna at almost any frequency will be so flat that the antenna would be practically useless. We make a 9-10dB 5.7-5.8 H-pol omni for ourselves, but very few as we just don't use that many. If you need H-pol, hit me offlist. Otherwise, there are plenty of good 5 GHz 9 and 10 dB V-pol omni's commercially available. Cameron Michael Baird wrote: Tom, This would not be serving any customers, all the locations will be at least 100ft+. Regards Michael Baird I'd be cautious about those Pancake shaped OMNI patterns at 16 DB. Tom DeReggi RapidDSL Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: Michael Baird m...@tc3net.com To: WISPA General List wireless@wispa.org Sent: Wednesday, October 28, 2009 11:27 PM Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird 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/ -- Internal Virus Database is out-of-date. Checked by AVG. Version: 7.5.560 / Virus Database: 270.12.26/2116 - Release Date: 5/15/2009 6:16 AM - --- 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] 5.8 Omni
It could be a nightmare, but with appropriate channels being selected - - it could be ok. IMHO - this is no worse than using multiple radios in a single enclosure in the same frequency. I guess it could be worse if you were using multiple radios in a single enclosure AND using an antenna like this :-) That would be shooting yourself in both feet :-) All that smart ass comment just to admit - - - IMHO you are correct in your assessment of the situation. Mac -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Jeremy Parr Sent: Thursday, October 29, 2009 11:21 AM To: WISPA General List Subject: Re: [WISPA] 5.8 Omni 2009/10/29 Michael Baird m...@tc3net.com: What about sectorized omni arrays, any of those out there at 5.8? An example would be http://www.netkrom.com/prod_ant_5.1-5.8ghz_vpol_sector_omni.html Just can't find anybody who sells it to get an idea on pricing. I would be very concerned about antenna isolation with that. Using it with a radio that does not support transmit sync would be a nightmare. --- - 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/ No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.423 / Virus Database: 270.14.34/2462 - Release Date: 10/29/09 07:38:00 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] 5.8 Omni
Cameron: Your prowess as an antenna designer is well known. Define a decent splitter, and where one might find one. I think that solution would be usable to a wide group on this list. Mike At 12:05 PM 10/29/2009, you wrote: That is not really an omni. It is three sectors meant to be fed with three different radios. That being said, and in regard to my last post, a back to back array with a couple of 90's fed correctly would yield a pretty nice omni pattern that you could get close to 16 dB. Two 18 dB sectors with a decent splitter would yield a 15 dB omni. It would just be pretty big as far as antennas go. Cameron Michael Baird wrote: What about sectorized omni arrays, any of those out there at 5.8? An example would be http://www.netkrom.com/prod_ant_5.1-5.8ghz_vpol_sector_omni.html Just can't find anybody who sells it to get an idea on pricing. Regards Michael Baird You won't find a 5 GHz omni at that gain, and if you do, I'd call BS. The vertical beamwidth on an 16dB omni antenna at almost any frequency will be so flat that the antenna would be practically useless. We make a 9-10dB 5.7-5.8 H-pol omni for ourselves, but very few as we just don't use that many. If you need H-pol, hit me offlist. Otherwise, there are plenty of good 5 GHz 9 and 10 dB V-pol omni's commercially available. Cameron Michael Baird wrote: Tom, This would not be serving any customers, all the locations will be at least 100ft+. Regards Michael Baird I'd be cautious about those Pancake shaped OMNI patterns at 16 DB. Tom DeReggi RapidDSL Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: Michael Baird m...@tc3net.com To: WISPA General List wireless@wispa.org Sent: Wednesday, October 28, 2009 11:27 PM Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird 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/ -- Internal Virus Database is out-of-date. Checked by AVG. Version: 7.5.560 / Virus Database: 270.12.26/2116 - Release Date: 5/15/2009 6:16 AM 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/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe:
Re: [WISPA] 5.8 Omni
I nosed around the Internet looking at the various designs of stripline dividers. It is almost trivial to make one. But the more I think about it, if I am going to coordinate a climb to hang a pair of antennae, I'd probably just carry two radios up and run them separate and sectorized. If both feeds are exactly the same, half the power would go to each. Receive should be symmetrical, and only slightly attenuated from a single antenna deployment. But, a point of failure, and may be false economy. Mike At 02:13 PM 10/29/2009, you wrote: There are several manufacturers like IF Engineering, Meca, RF Lamda, and such of quality combiner/dividers, but pretty much any RF Design group that manufactures quality hybrid stripline dividers would probably work. These are typically better than using something like a T to split/combine signals. What you want is something with low insertion loss and at least 20 dB of isolation between ports. Cameron Mike wrote: Cameron: Your prowess as an antenna designer is well known. Define a decent splitter, and where one might find one. I think that solution would be usable to a wide group on this list. Mike At 12:05 PM 10/29/2009, you wrote: That is not really an omni. It is three sectors meant to be fed with three different radios. That being said, and in regard to my last post, a back to back array with a couple of 90's fed correctly would yield a pretty nice omni pattern that you could get close to 16 dB. Two 18 dB sectors with a decent splitter would yield a 15 dB omni. It would just be pretty big as far as antennas go. Cameron Michael Baird wrote: What about sectorized omni arrays, any of those out there at 5.8? An example would be http://www.netkrom.com/prod_ant_5.1-5.8ghz_vpol_sector_omni.html Just can't find anybody who sells it to get an idea on pricing. Regards Michael Baird You won't find a 5 GHz omni at that gain, and if you do, I'd call BS. The vertical beamwidth on an 16dB omni antenna at almost any frequency will be so flat that the antenna would be practically useless. We make a 9-10dB 5.7-5.8 H-pol omni for ourselves, but very few as we just don't use that many. If you need H-pol, hit me offlist. Otherwise, there are plenty of good 5 GHz 9 and 10 dB V-pol omni's commercially available. Cameron Michael Baird wrote: Tom, This would not be serving any customers, all the locations will be at least 100ft+. Regards Michael Baird I'd be cautious about those Pancake shaped OMNI patterns at 16 DB. Tom DeReggi RapidDSL Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: Michael Baird m...@tc3net.com To: WISPA General List wireless@wispa.org Sent: Wednesday, October 28, 2009 11:27 PM Subject: [WISPA] 5.8 Omni I need a 5.8 Omni to feed some smaller sites via WDS, looking for some recommendations was hoping for 16 db but can't seem to find any. Regards Michael Baird 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/ -- Internal Virus Database is out-of-date. Checked by AVG. Version: 7.5.560 / Virus Database: 270.12.26/2116 - Release Date: 5/15/2009 6:16 AM 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/