MikroTik

ndor

This is a badly based experiment, the construction based only on some images, without any technical detail . On the other hand, there is absolutely no connection that MIMO 3x3 is exclusively for indoor. On the contrary, an oudoor link is much more feasible because there are two identical equipments....

ndor

Seriously !! Understand that you used this type of feeder.
Or do you just give it your opinion about what you see in a picture?
How did you find that there are no phase differences between the connectors?

ndor

For 30 dBi you should look for a parabolic offset or prime focus feeder.
Something like that
http://antenewireless.ro/index.php?rout ... uct_id=377

ndor

If you refer to isolation between polarizations, you can not calculate it, measure it.
The minimum acceptable is -20dB.
If you refer to isolation between two antennas, there is no standard, the higher, the better.

ndor

In the movie I see nothing but a laptop on a field.
How much does the land cost in the area? I suspect you sell land, not equipment.

ndor

Some pictures with the product , we can see ?

ndor

Because wireless it is bi-directional communication , and antenna have the same gain in tx like in rx .
That means you have better reception with big antenna than small antenna.

ndor

scampbell: your idea is not working because that is a low band (2.4G) and hi band (5G) filter inside. Ndor: yes, i can be done with bandpass filter - but that would really limit the usage. For example: radio port1 filtered to 5500-5650 radio port2 filtered to 5750-5900 Again: Mimosa connect 2 radio...

ndor

Yes , it is possible if you use a duplexer and additional bandpass filters .In fact the same setup is also used in the professional equipment .

ndor

1. No. And you can not fit both devices in the antenna focus .
2. Yes.......the signal go to the sky , if you don't redirect the dish on the desired direction .

ndor

mANT19 is an sector antenna with an opening of 120 degrees .
This radiation pattern is too narrow .

ndor

According to the calculation of the Fresnel zone , for the distance and frequency of the question , must install at least 2 m height in relation to the highest obstacle .
- http://www.proxim.com/products/knowledg ... -zone#feet

ndor

To combine antennas with the same polarization has nothing to do with the spatial diversity . No more than it can be said that the system will become SISO . The advantage would be that it will be a single polarization , less interference , an area covered more widely . The spatial diversity has noth...

ndor

Yes, you can use how many antennas you like, with the same polarization . It will work very well .
You can use power divider 2: 1 to mount two antennas on the same connector .
Total 6 antennas !!

ndor

Using a metal tube, you will create a waveguide .At that diameter and a frequency between 5-6 Ghz you will not get anything at the other end . Or ,if you have a signal, it will be very bad . See waveguide transmission line theory On the other hand, if use a metal tube with finite lenght , you will n...

ndor

I think you have no idea how it works in wireless , data transmission. A mobile client is not the same as a stand alone client. I'll give you two small clues: 1 - Antennas between AP and client need to see one another without obstacles. 2 - A mobile client that connects to the AP with a phone, table...

ndor

Yes, total are about 15 w

ndor

Yes, there are manufacturers who use systems with 27 antennas and more/ channel in the same polarization. Ruckus, Xirrus ... etc, but talk of a totally different technology (beamforming) and a different destination p2mp. .... I do not want to comment remainder posting. All I wanted to say was, that ...

ndor

Quadrature directional coupler or hybride directional coupler , same thing , are passive devices . In the link below you can see an example in Figure 21 how can also be used a combination of such devices. With a little imagination you can get an idea of what I explained above . - https://en.wikipedi...

ndor

In my opinion using a slant polarization for a 3x3 system is a mistake. Slant polarization is not recommended for use in combination with polarization H and V .Insulation due to very small differences from the other two. Only -3 dB against each of them. Usually,singular slant polarization is used in...

ndor

I also don't understand how RF Elements can specify that the antennas are vertically polarized to be honest as they are running parallel to the floor. First, you must understand what they mean polarization. It is the electromagnetic wave polarization that has no connection with how the antenna is p...

ndor

Jirous , in my opinion , is the best on the market.
http://en.jirous.com/antenna-5ghz-parabolic

ndor

In theory no matter who is above and who is below.
In practice I would suggest that 5.8 ghz antenna to be placed on top.
Of course this is also depending on their radiation in the vertical plane and each antenna gain,

ndor

But bigger openin in antenna means not only bigger coverage, but bigger noise to!

At this point I agree with you

ndor

Yes it is a waveguide with a corrugated horn. This type of horn antenna has a radiation that looks like this and is especially suitable for point to point links horn_directivity.JPG An antenna sector radiation should look like this: sectoral horn patern_1.JPG As shown vertical radiation is greatly a...

ndor

In fact it is nothing but a horn antenna. I do not understand why someone would at this sector to radiate equally in both planes. That would mean that interfere strongly with other antennas located above and below this type of antenna I'd be really curious to see how they can get more than -53dB sep...

ndor

I guess you want to mount one RB on each floor. Otherwise I do not see how you could have good coverage with omni antennas in 4 floors.
In this case no matter what distance are antennas to one another.

ndor

Yes, you can. Works very well

ndor

No matter the distance. Both antennas are mounted on the same equipment so they will work synchronously. And there will be not interference between them.

ndor

Yes, you can do this. You can put three antennas on a RB953GS oriented in different directions.

ndor

I think he would need something from Xirrus. Something XR-6000 Series
They say that can support up to 3000 simultaneous users on an AP
http://www.xirrus.com/Products/Wireless ... es-%281%29

ndor

And where is sextant g 5hnd in this equation ?

ndor

For noise,yes.for signal,no

ndor

Something like that ? http://antenewireless.ro/95013.p.html

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