Which 3 miniPCI will work OK with RB433AH.

RouterOS Wireless Networking
1

Hi

Can anyone suggest high power miniPCI cards ( need to install 3 of them into RB 433AH ) with 800mw to 1000mw of power. I need 3 of them to be installed inside mikrotik RB433AH.

I need cards that support 801.11 a/b/n ( seperate or all in one). ( MIMO optional )

Price suggestions are also welcome.


P.S

( Mikrotik miniPCI Cards have WEAK signals ) but work/average are ok, need to push signal thru trees

Thank you in advance.

2

5.X GHz does not go through trees as good as 2.4GHz. Using MIMO would also help. But the 802.11n on the more crowded 2.4GHz spectrum needs 80% of the spectum to work properly. I would suggest using a 10MHz or 20MHz MIMO on 2.4GHz.

Ubiquity or Mikrotik miniPCI cards would be fine.

Also use narrower sectors for better signal strength and less noise (if not using grids). A 90 degree sector would give better performance than 120 degree sectors of the same dBi strength.

Do not try to fix problems with higher power output. Rather use the right frequencies, antennas and technology.

3

THANKS YOU SO MUCH i really appreciate your help, who ever you are.

I have one more question. I planing to set up chain Mesh with OSPF. with 3 to 4 radios thats why the RB433AH looks tempting.

I want to use 2 radios 5.8Ghz for up and down one one for Client 2.4 ghs. So i need two in one .
The two up and down radios (5.8Ghz) can stay in max 25 Dbi. But for clients i would want to use something stronger like ubiquiti cards XR2 ( dont need 801.11n ) pure 801.11g is OK.

I know i can not put more then 2 Ubiquite card to the RB 433AH, so i plan to user 2 MT RB MiMO 5 Ghz for up and down radios and 1 ubiguite for AP (2.4 ghz clients )

Yea but Antennas are 2 METER LONG for mesh LOL, to get optimal 36 DBi EREA output. I foot is a max lengt of antenna on Mesh access point in my opinion. Know any ones with this specs that give me at least 10 Dbi for 2.4 and 5.8 ?


My goal is to have output at each antennas with the specs outline above 36 Dbi EREA. I know i am dreaming, but at least you know what is my goal. Optimal mesh hardware performance. If i can put it this way.

Is this optimal tun up? any suggestion to improve it?


Be more specific/precise which slot on RB 433AH connects to which card with what antenna. Optimal performance. Will i get at least 500 meters from mesh to mesh AP? in chain/liner line of sight? And if 900Ghz should be included how many clients it can support knowing my service plan is from 1/2Mbit and 1 and 2 Mbts. Know you know all of my fundamental setup.

thanks for you input once again

4

You will not be able to physically fit three miniPCI cards with that much power in a triple shot miniPCI device like the RB433 or RB433UAH uses.

The heat sinks will be too large for three cards. You can fit three Mikrotik miniPCI cards.

Usually two Ubiquiti cards are all that you can fit.

If you want to use one Ubiquiti card with two Mikrotik cards, I was recently able to fit an SR71-A with two R52Hn cards in an RB433AH.

Tom

5

How did those 3 cards worked all together? Did you noticed degradation in signal level at any of those 3 miniPCIs Tom?


What antennas did you used?

6

Did you test that?

This scenario the 433AH reboots:
Top Slot → R52HN
Middle Slot → SR71A
Bottom Slot → R52HN

Any ideas; is it rebooting because the cards are touching?

7

I’d check the power supply. Those cards all draw a lot of power.

I have done some testing myself and had to change my plans. 2x R52HN and 1 XR5, 1 @ 2.4, 2 at 5.7-5.8.

The two 5GHz cause self interference regardless of how I put them in the 433. With the card in the middle set to 2.4GHz the problems are not as bad, but still there.

The only way I got good CCQ was by setting the 5GHz ptp @ 5.8 and the 5GHz AP to 5.3GHz.

MMCX has less self interference problems than ufl by far, probably just due to the coax, but it is still there. With both cards in the high power band (5.8GHz) pushing near full tx power with signals -70s or below, ccq suffers. If you turn tx down and signal is in the -70s performance is reasonable.

8

I really appreciate your expertises

thx

9

Hi


Did any of you tested/tried 2 R52nM MT? its MIMO and uses only approx. 2Watts of power, compering it to R52HN, that uses 7 WATTS of power. Remember the RB433AH output power to the minipcis slots, total max is 16 Watts, so if you put 2x R52HN + any other 25dbi minipci card, the power will be not saficiant. to powere the in full with mimo etc.\

What is your experiance with RB 433ah with 3 minipci cards installed and working? what cards did you use.?

I thinkg RB 433ah is a misstake, by Mikrotik. to much problems.

Scared to spend money at something that will not do what i expected to do.

“Dont make motocycle with 3 seat where only 2 will fit.” BMW don’t make mistakes like that lol, i guess MikTik is not “BMW” is getting there, lol, but not “quit” there. But i guess i all about $

LOL

10

my experience is:

  1. it is possible to use 3 minipci radio card only if you use low power (15dbm max) and you have low traffic and few clients. otherwise is a nigthmare
  2. it is possible to use 2 minipci radio only if you use low power radio (max 20dbm) and an microwave adsorber foil inside the metallic case
  3. if you want low interferences, high ccq, no strange problems it is better to use a single case with a single board (411ah) with a single radio (r52n)

good work!

11

thx rodolf

12

rodolf


How come other manufacturers have 4 radio access points that work pretty good. but don`t have the OS hotspot etc. in them thats why they sucks

Most of them use 25 dbi radios, i wounder why

How bout extension ribbon for the middle slot in rb 433ah for high power minipci card ex. 1 Watt power. so i can put two 5.8 or 5.3ghz radios and use the middle one for gher power 600-to -1Watt power 2.4 ghz card. with extension ribbon. for minipci. Where to buy them . will they help to combat the interferance

13

What’s your “Pretty Good”?
I had the same results of Rodolfo.
(Anyway we are talking about of products of the same price range)
I don’t know much about carrier products.
3 Radios on the same routerboard looks professional but it is not.
3 Radios on 3 different routerboards will give you a lot more management options. And better signals. And you don’t have to care about card size :wink:

14

I actually have 3 XR cards in 2 rb433ah’s. Not something I wanted to do, but was caught on a cold cold day with a customer that HAD to go up, and only had XR’s in stock whereas usually in this situation I would have used a Mikrotik card as the 3 rd radio.

Its more than a tight fit. I cant remember which one is in which slot, but there is a certain configuration where it almost fits. Then u just have to add a little “pressure” and althought they are now in there on an angle in the minipci slots, lol the damn thing has been up for some time now.

Just saying if you have no choice, it will fit. Not suggested, but possible..

p.s. For some odd reason, im not having any power issues, but not saying it wont happen either. :S

15

I agree with you.
However, I do have a RB333 with three Ubiquiti SR5 inside.
It’s working quite well, even if CCQ is not 100%.
Unfortunately, this is a repeater where there is no power supply, so we had to install solar panels with batteries, and only a single board powered by 12VDC is accettable for power consumption (about 6W).

Ciao
Massimo