So, I have been working on radio mobile for the past couple days. I
need to make my antenna patterns. I use ubiquiti powerstations and
need to find the info on the antenna. How do I look up that info on
the fcc website? FCC Part 15.247, IC RS210 is the info I have from the
data sheet. Will
Doesn't Ubuiquiti post the pattern on their site? Most of the antenna
companies do.
Brian Rohrbacher wrote:
So, I have been working on radio mobile for the past couple days. I
need to make my antenna patterns. I use ubiquiti powerstations and
need to find the info on the antenna. How do
That is just pointers to regulation text. You need to look in the mfg's
datasheet for antenna patterns. If that is not available from the manufacturer
sometime you can find that in the FCC approval application filing documents
available on the FCC id search database.
Ubiquiti's FCC id is swx.
It's on the data sheet, but not real easy to read. I only wanted to
"guess" so much at all the numbers. I thought there might be a better
pattern of info on the fcc site.
Brian
Scott Reed wrote:
Doesn't Ubuiquiti post the pattern on their site? Most of the antenna
companies do.
Brian
I think the main confusion here is people are mixing up the Part 15
rules and the part 90 rules. Part 15 the whole system has to be type
certified. In Part 90 the transmitter has to be certified along with
other regulations.
Part 90 is a different ball game people, it is licensed and WILL be
I went to the FCC website and typed swx-ps2 into the search box and got
no results. Must be it's not that easy. Can I get a little more
direction on how to find something there? Explain it in simple terms
(pretend you are describing it to someone like Marlon) *ducking*.
Brian
FYI...If your using RadioMobile as a path calculator for PtP links, the
antenna pattern is irrelevant. Using an omni antenna for both TX and RX
will give you accurate numbers.
-Eric
Brian Rohrbacher wrote:
So, I have been working on radio mobile for the past couple days. I
need to make my
I'm trying to figure out coverage around access points.
Eric Muehleisen wrote:
FYI...If your using RadioMobile as a path calculator for PtP links, the
antenna pattern is irrelevant. Using an omni antenna for both TX and RX
will give you accurate numbers.
-Eric
Brian Rohrbacher wrote:
Brian,
Go to the Radio Mobile group on yahoo. There you can search the archives
and or files sections. The archives will explain how to make your own
antenna file if you can find a suitable one for your use. For example if you
are trying to create a 60 degree antenna pattern you could use a
Besides 60deg is same on all antennas since that is to denote where your 3dB of
max gain on the antenna. How much signal you lose outside will differ from
antenna to antenna and the size of the side lobes. But the most interesting
portion is what you have inside the 60deg and there all antennas
EIRP is equivalent in measurements...
John Rock
Director of Operations - Senior Engineer
Wireless Connections
166 Milan Ave., Norwalk, Oh. 44857
ACCessing the Future Today!!
ofc. 419.660.6100
cell 419-706-7356
fax 419-668-4077
http://www.wirelessconnections.net
This transmission and any files
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My experience with antenna patterns has been that they are not accurate
in all distances. It's either that or I don't understand them.
To give you a couple examples.
I have a 900MHz yagi, that has a miraculous connection @ 90* of the
center 1 mile out.
I was surprised that I even got a signal
Scriv,
You did an excellent write-up and acknowledges one very important
factor, change is difficult. We have all built strong systems and
telling a customer we are fixed system carries a lot less
responsibility than to infer that they can do the 4.9 standard of
150MPH.
I admit I'd love to take
Heya George,
Take the time to go through this and really check out the pictures.
http://www.odessaoffice.com/wireless/antenna/how_to_pick_the_right_antenna.htm
I tried to find the original page that I got the 3d pics from but the page
is gone. There are some that do a really good job of
Yes the front to back ratio is probably the most difference you will see in
antenna patterns from manufacturer to manufacturer. Since they can't cheat
the laws of physics and the power they get in the forward direction of a
certain beam width antenna, they can spend the money on construction and
Keep in mind antennas are not digital but analog. You can get signal outside
the pattern. Also most of the patterns are computer designed and is close to
what real world but not perfect. Sometimes your sidelobes are bigger then what
datasheet shows and sometimes you have a slightly defect
On Fri, 2009-03-06 at 19:12 -0600, John Scrivner wrote:
Sadly WISPs have dragged their feet in development of true mobility
and roaming.
There are many reasons for this, some of which make roaming a near
impossibility. I have some customers who are doing some things that are
very near to one
The problems are numerous. Building a scalable solution that will fit
multiple operators is a real challenge. Some of the challenges will
potentially require you and your proposed partner to make significant
network design changes. If you have an interest in such a project,
let's get
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