View Full Version : Ubiquiti XR5 with wifi-plus antennas?
mobilexpi
12-23-2008, 09:04 PM
Hello:
Any one have test the wifi-plus antennas, it said that it don't require LOS...
Is it true?
What is the difference between NanoStation 5 and the wifi-plus antennas (for using it with XR5).
Thanks
Hello:
Any one have test the wifi-plus antennas, it said that it don't require LOS...
Is it true?
What is the difference between NanoStation 5 and the wifi-plus antennas (for using it with XR5).
"it said that it don't require LOS"
Advertising spin...Marking hype...
* "geo-spatial, multi-polarized, dual band, non line of sight (NLOS) antenna" Huh??
* "It work greats in <insert whatever environment you want>" I wonder if they tried a traditional antenna to compare it against?
* "Twice the performance" By what metrics?
* "non line of sight (NLOS) " Define NLOS. My old Linksys WRT54G can go though a sheetrock wall...isn't that NLOS?
You can't stick one of their antenna on your radio and expect twice the LOS range. You might get 30% more signal throw when penetrating certain obstructions, such as trees, because it radiates in both vertical and horizontal polarities...which isn't going to help if your end is one or the other as you get at least 6 dB loss with cross polarization in the first place.
Now...lets compare the NS5 external antenna with an XR5 external antenna. The NS5 is 22 dBm output compared to XR5's 28 dBm. Receiver sensitivities are the same. Stick a 22 dBi antenna on a NS5 and you get 18 dBi EIRP compared to a 22 dBi and NR5 you'll get 22 dBi EIRP.
panamasteve
12-26-2008, 01:44 PM
I have three of their 4-stack omni's in operation and several of the "hockey puck" omni's as well. Building and tree penetration is improved with all of their antennas that I have used. Whether or not it is worth the price difference is up to the user.
Just for the sake of argument, if I have a radio with 22dBm output(excluding connector and cable loss) and I hook it up to a 22dB gain antenna, aren't I going to have a 44dBm EIRP?
Cross-polarization loss should be about 20dB--allowing for two radios with cross-polarized feeds to be used on the same antenna on the same band with a moderate degree of isolation.
rconaway
12-27-2008, 05:02 PM
What is the cost of their antennas?
http://www.connectronics.com/wifi_plus/
I'm gonna go ahead and order a few different models and see how they really compare to other antennas.
rconaway
12-27-2008, 08:51 PM
What is up with the 16dBi omni for $270? Is this a simple omni-antenna or some type of multi-polarity antenna?
Its not a simple omni antenna..."its a geo-spatial, multi-polarized, dual band, non line of sight (NLOS) antenna" :roll: :lol:
rconaway
12-27-2008, 10:46 PM
Wow, say that 5 times quickly. I may have to buy one of these and see how it works.
No...seriously. Its basically your run of the mill omni antenna, but the lower collinear elements are shorter forcing a phase shift that pulls the signal down. I've rebuilt a few eighteen foot fiberglass VHF antennas with my own down tilt thirty years ago.
rconaway
12-28-2008, 08:49 AM
Point taken. Thanks.
panamasteve
12-28-2008, 11:39 AM
No...seriously. Its basically your run of the mill omni antenna, but the lower collinear elements are shorter forcing a phase shift that pulls the signal down. I've rebuilt a few eighteen foot fiberglass VHF antennas with my own down tilt thirty years ago.
It's more than just a simple colinear--have you looked at one of the elements in the "stacked" omni's?
rconaway
12-28-2008, 02:58 PM
So compared to something like a 15dBi vertical omni from Hyperlinktech, what would be the difference LOS and through buildings to a laptop? How would that compare to the SLH antennas if you used four of the 12dBi antennas in an omni-directional pattern?
panamasteve...
You may be thinking of the insides of a cellular omni downtilt. Yup, I seen them. One was a single sheet of brass and all the "elements" were cut with a water jet "torch" and quarterwave stubs to float it above ground.
But that's no comparison to a < $300 omni.
rconaway...
"How would that compare to the SLH antennas if you used four of the 12dBi antennas in an omni-directional pattern?"
Help me picture that.
So would you say my assessment (second post in this thread) was on the mark?
Advertising spin...Marking hype...
