Tasos

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Posts posted by Tasos

  2. recommendations for dense deployment from elevated position

    in Suggestions and Ideas

    Posted

    @Ron_Wisp Installs like this are very complicated to asses with limited info from the deployment. So many factors come into play based on noise floor, channel availability, radio platform and even CPE types.  From the looks of what you supplied you may even have towers in close proximity to others so this becomes a more in-depth design requiring a call as you already know.

    To answer your specific question on the number of Horns facing in the same direction, that also depends on factors I outlined above and also depends on how much vertical mounting space you have on the tower.  With our new Asymmetrical Horns having more narrow elevation cuts and absolutely zero side-lobes you are able to stack them vertically using down-tilt to project your coverage in front of another Horn in the same azimuth.  For example you can use one Asymmetrical Horn with lots of down tilt to cover really close to the tower (0-1mile) and then another with less down tilt to cover further out (1-3miles) so those beams don't overlap but cover the same azimuth.  The numbers I used for distance is to just explain the concept and are not exact. Basically you are able to build density now vertically as people have done for years with our Symmetrical horns horizontally due to our very precise antenna beam patterns. Make sense?

    To answer your second question, again that depends on many things. The amount of guard band needed between channels varies based on the radio platform and its filtering capabilities. Some are better than others, but either way our Horns help no matter what radio you choose compared to old sectors with tons of side lobes. The other things is I would not depend on 4096QAM to help with speed on existing installs as the RX levels required to achieve that modulation rate will be huge and might require a new redesign as many of your fringe customers will not be able to achieve that rate if you are currently using 256QAM. If you are using something like LTU and running at 1024QAM, you can expect your distance to be possibly cut in half...

    In the end, our Horns will allow you to achieve much more density that you have ever been able to do with sectors. If you keep your distances short and AP density high you will get better results, and like any antenna type, the more space you can put between them on the tower the better your performance will be.

  3. I don't have good results with Twinsport and ePMP2000

    in TwistPort™ Products

    Posted

    @Luis Ezpeleta- Thank you for posting your issue. There are a few things that are unclear from what you posted and we will need a little more information. When you say the results are very poor can you please explain what are you compering it to?  Poorer then what?  This is so we can understand what you expected and why.

    As to the setting you have, can you please share some AP settings screen shots like frequency, Distance, Spectrum analyzer disabled, SM Target RX level, and actual AP TX power as you have it listed in our link calculator with 28dBm TX which is not suggested for this or any other radio. Its very high. Also, can you confirm what FW version you are running on the ePMP2000 and if you are also using the Smart antenna with the Horn.Same goes for the SM side so Basically the main AP/SM settings pages :)

    I attached a screen shot of your test with much lower TX power and also with the actual antenna gain of the Force 190 you are using. As you can see you should see about a -54 with lower TX power assuming this is actually LOS and no obstructions.  Please also confirm the AP height and CPE height as you have it listed as 30meters on the AP and 8 meters on the CPE.

    2K Link.jpg

  15. dual chain accesspoint + dual chain antenna

    in Q&A from Webinars

    Posted

    @laithmikrotik- In general terms what you are asking is correct but its half power in dBm.  So if the radio is set to 30dBm in TX power then you will get half power to each chain which is -3db less, so 27dBm to each chain not 15dBm.  DBs are measured in the log scale and are not measured in the linear scale, so half power is  3db less and 1/4 power is 6db less and so on.  Does that make sense?  Again, the specific manufacturer (MFG) might do something different, or perhaps their radio might have different capabilities, so you need to ask them, but in general in a MIMO type radio, the power is split between chains.

  19. Sector Carrier Class Antennas webinar with Microcom Technologies

    in Recorded Webinars

    Posted

    @n21roadie- Not really. It main functions are forming the beams so both the Vertical and Horizontal coverage areas are the same and then reducing back radiation. You may see some improved co-location on top an bottom depending on what sector you compare it to, but for the most part you should use vertical space separation like other sectors. Or you should look at our Horns for the best isolation in all directions.