MikroTik

Sergio72

Some tests from our network:
If you like it, give me some Karma points

Hi czolo,

What distance did you have there and which antennas have you used ?

Sergio72

Sounds not good, I hoped I would be able to solve it on MikroTik soft and stuff... Maybe MT guys can say something for that issue ? Is it possible in MT or not ?

Sergio72

We have a customer who wants us to provide internet to moving train. I have read about comparable solution here http://www.wireless-instruments.com/en/18/moscow-subway-wibox-antenna-with-cisco-mimo-4x4-access-points-installation.html. Generally I'm not going to use Cisco, I'd like to do it using Mik...

Sergio72

As we discuss about this radio... do MT plan to develop 3x3 and 4x4 radios ?

Sergio72

911G-5HPnD is high-power unit, isn't it a problem of overheating ? Try to use bigger enclosures for the installation, or make some ventilation like a fan or something.

Sergio72

Maybe some ventilation is needed ? Come on, there is a big radiator (heat sink), how can it work properly when it can't radiate like in small itelite enclosures ? IMO you need more space like in, let say, WiBOX system, which I use in my installations http://www.wireless-instruments.com/en/produkty/1...

Sergio72

Can you specify channeling on ISM band ? Or where it is written you have to use some specific channel spacing? 60MHz is nothing else than 3x20MHz. Nstreme and NV2 is not 802.11N either and who cares ? So... Can you take all range of 5,1-5,9 GHz ? It's k x 20MHz :) The regulations concerns only the ...

Sergio72

I can do it as described in this link http://www.wireless-instruments.com/en/13/can-you-imagine-link-over-300-mbps-with-routerboard-and-mimo-2x2-antenna-.html , but what about possible controll of the telecomm agency ? 60 MHz channel isn't the standard of 802.11n ! Won't it bring problems to the WI...

Sergio72

it is a translation mistake. The pictures clearly show the speed to be 298Mbits. The text which says "speed over 300Mbit" should say "speed of 300mbit"

True... but it's shown Tx/Rx Rate of 320mbps...

But doesn't matter, theoretical max is 300

Sergio72

Hi, I got an e-mail from WI with a link to some customer story or something like that. It would be nothing special, but the text describes the connection of 2x2 that can exceed 300Mbps. As far as I know 300Mbps is the theoretical max I can get from MIMO 2x2. http://www.wireless-instruments.com/en/13...

Sergio72

For example this high gain antenna has SMA connector, you would need MMCX to SMA adatper:
http://www.aliexpress.com/item/Free-Shi ... 54033.html

20dBi dipole antenna... good grief !

Sergio72

Haven't you paid the domain registry fee ?

joking...

Sergio72

SXT G-5HnD should be ok for that distance, but doesn't guarantee anything. In urban area where is a lot of 5 GHz stations there can be strong interference. If you aren't able to set up MT, ask for the help MT consultants http://www.mikrotik.com/consultants.html or QuickSet.

Sergio72

Same for 6x6: http://www.lanbowan.com/products/en_vpro.asp?id=714

To be sure 6x6 is not possible in 802.11n standard, unless you meant 2 x MIMO 3x3.

6x6 is possible in 802.11ac standard for example, but I think that making good antennas for that band would be a bit problematic.

Sergio72

No offence, I took it wrong

You are right.

But in general there is no sense to rotate omni antenna.

Sergio72

The good antenna is a key in MIMO 3x3. There is only few companies which offer this solution. I don't know anyone who uses Lanbowan, I know that CyberBajt ready solution works. The problem is with range and the final price, and the throughput of 450Mbps is in theory only I remind :) 3x3 needs to be ...

Sergio72

Too short info... provide with more details... topography, expected users number etc.

Sergio72

Check the radio card first, maybe it's broken...

Sergio72

We had few SXT which had problems with waterproofing.

I would like to ask you another question, because you mentioned about PTMP network, is the 60 deg enough for your application ?

Sergio72

Hehe, why do you think the gain will be changed ?:) Omni in different settings, so for example V (normally) in horizontal position won't be omni in horizontal in my understanding. For example the antenna has horizontal beamwidth 360degrees (as normally omni should have) and 8 degrees in vertical. Wh...

Sergio72

Some supply converter and PSU 48V.

Sergio72

PC is much more efficient (depends on PC), but how it will operate outdoor ?

Standard PC boards are not designed to work outdoor in contradistinction to MikroTik RouterBoards. It's not about waterproofing, it's on the temperature, humidity etc. Another thing is power supply for PC, not PoE.

Sergio72

There is few ready solutions for MIMO 3x3 as CyberBajt for example http://www.cyberbajt.com/en/shop_item/3324/pan_519mimo_3x3.html. Also Wireless Instruments has an antennas for MIMO 3x3 http://www.wireless-instruments.com/en/produkty/15/15/antennas-5ghz/mimo/directional/wibox-pa-d3m5-18hv.html. The...

Sergio72

35km can be complicated, for sure you need some high-gained antennas. On the market there is few good antenna producers who offer dual polarity dish antennas like Cyberbajt, Jirous or UBNT. From these three CyberBajt and Jirous have better parameters than UBNT, but UBNT has 34 dBi antenna (CB and J ...

Sergio72

Jirous or Cyberbajt dual polarity parabolic antenna http://www.cyberbajt.com/en/shop_item/3 ... b_box.html. As far as I know Jirous have some original plastic boxes to be used with parabolics. Plastic with some shielding inside also would be ok.

Sergio72

I recommend these antennas, work well.

1) http://www.cyberbajt.com/en/shop_item/3 ... hv_wb.html

and

2) http://www.cyberbajt.com/en/shop_item/3 ... hv_wb.html

Sergio72

I linked with some post from Begginers Basic section regarding Wimax support in MT, but there are no people to see it probably. I decided to publish it here. Some guy asked for Wimax and MT, got answer that MT won't support Wimax. I'd like to continue this thread, does anyone know what software woul...

Sergio72

I'd like to continue this thread, does anyone know what software would be great to support these boards that John mentioned (WaveSat NP7256 or SQN-2130) ? I need to create client devices for my customer, and I'm looking for good electronics for WiMax. I need to have something like this http://www.gr...

Sergio72

2,5 km it's not far away, use some dual polarity antenna with box and RB711G-5HnD. I have dual polarity WiBOX antennas, worth to recommend -> http://www.wireless-instruments.com/en/ ... -20hv.html .

Sergio72

Yes, separation between polarizations is very important in MIMO antennas. Especially for some functions as spatial multiplexing when you don't have any reflecting elements. I don't know RF Elements antennas, but if you write they don't work, I will notice it. For MT embeded products the best are int...

Sergio72

Hi Guys, I think i've made a small mistake ordering the wrong stuff, but I was wondering if I can make it work.. I'm building a low speed wireless network for an open terrain, so i ordered the RB/711 and two Sector antennas (http://shop.meconet.de/Antennas-Accessories/2-4-GHz-ISM/WLAN/Sector-Antenn...

Sergio72

175cm dish... what a great sail... it will be blown off from the mast on the first storm.

And forget about MIMO 3x3 on 49km, but please share your test results here.

Sergio72

pls provide to metal case...

thanks

Exactly.

Sergio72

The radiation pattern very interesting... it's right...

Sergio72

1,8m diameter and 38 dBi gain... In the past (6-7 years ago) I had 1,5m dish, I used it in 2,4 GHz. We have very great antenna gain and the link was really impressive. But the most impressive was the dish "flight" when wind blew it off from the mast. Hopefully noone was hurt... On the mark...

Sergio72

You should use some parabolic dual pol. antenna (Jirous/CyberBajt). SEXTANT has too weak antenna. If you like panels use http://www.wireless-instruments.com/en/ ... -24hv.html, we used them for two point-to-point links.

Sergio72

But... what are you going to do exactly ? MIMO uses reflections, so 711 "n" seems to be a good choice. Remember that 22 dBi antenna would be quite big, are you going to use parabolic antennas ?

What antennas uses your ISP on the base station ?

Sergio72

Take a look on this solution http://www.wireless-instruments.com/en/produkty/14/49/antennas-5ghz/mimo/sector/wibox-sa-m5-45-19hv.html, we used few different solutions, but I have changed for WiBOX. We have bought dual polarity panels from them, they are much better than every antennas we have used b...

Sergio72

Check this out http://www.wireless-instruments.com/en/ ... -5-20.html

I have used dual polarity antennas from WiBOX, but I have have spoken with WISPs who used single polarity.

Nice design.

Sergio72

Hi BrinkNetworks, We have just tested 2 types of their panels, and we are very satisfied, one is: http://www.wireless-instruments.com/en/produkty/15/44/antennas-5ghz/mimo/directional/wibox-pa-m5-20hv.html 20 dBi and the second http://www.wireless-instruments.com/en/produkty/15/45/antennas-5ghz/mimo/...

Sergio72

The antennas have arrived few minutes ago. Looks impressive (really high-quality), a lot of installation space, huge and solid holder (with the scale, made from fiber glass as the manufacturer informs). I have bought http://www.wireless-instruments.com/en/produkty/15/45/antennas-5ghz/mimo/directiona...

Sergio72

Hi, in recent times we have so many prolems with Routerboard HW. RB 800 (many boards, ROS 5.22) 1. bloated capacitors - many routerboards 2. overheating 3. sometimes is wireless visible (R52n), sometimes is not 4. totally frozen (ping watchdog is not work) If you have the problem with overheating t...

Sergio72

RB112 seems to be like a relic

I have few RB512 on my desk, still working

Write if you have successfully reanimated RB112.

Sergio72

I considered Jirous antenna that you have proposed, but I was looking for something cheaper. After searching at made for mt I placed an order in iWave for -> http://www.wireless-instruments.com/en/produkty/15/44/antennas-5ghz/mimo/directional/wibox-pa-m5-20hv.html . The WiBOX series seems to be a go...

Sergio72

I'm looking for a good solution for point to point link. I have considered SEXTANT G-5HnD, but apart from interesting forst part of the name, the antenna appears to be too weak for my application. I'm looking for same antenna dual polarity with the gain of 20-22dBi, I plan to use RB711G-5HnD, I thin...

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