Wireless issues with RB433GL and 3 wireless cards

RouterOS Wireless Networking
1

Hello, i try to find some solution for this issue but no success.
Have a points with different location in one resort in Bulgaria.
On point have RB433GL with 3 wireless cards “Atheros 11N” (R52hN - 802.11a/b/g/n).
I put same SSID, different channels on all wireless cards.
Put the cards in one bridge and ethernet adapter which have internet from dhcp server.
scheme:
DHCP server --RJ45—> ether —> rb —> wireless —> clients

The problem is when 2 or more clients are connected to the SSID didn’t have good bandwidth or no bandwidth(ping, browsing, etc.)
The problem isn’t at any time. sometimes have sometimes didn’t have a problem.
port of the bridge:

 #    INTERFACE                                                                               BRIDGE                                                                              PRIORITY  PATH-COST    HORIZON
 0 I  wlan2                                                                                   br                                                                                      0x80         10       none
 1    ether1                                                                                  br                                                                                      0x80         10       none
 2 I  ether2                                                                                  br                                                                                      0x80         10       none
 3 I  ether3                                                                                  br                                                                                      0x80         10       none
 4 I  wlan1                                                                                   br                                                                                      0x80         10       none
 5 I  wlan3                                                                                   br                                                                                      0x80         10       none

wireless cards settings

Flags: X - disabled, R - running 
 0    name="wlan1" mtu=1500 mac-address=00:0C:42:6C:E5:A8 arp=enabled interface-type=Atheros 11N mode=ap-bridge ssid="ONE NET" frequency=2412 band=2ghz-b/g/n channel-width=20mhz scan-list=default 
      wireless-protocol=unspecified wds-mode=disabled wds-default-bridge=none wds-ignore-ssid=no bridge-mode=disabled default-authentication=yes default-forwarding=no default-ap-tx-limit=0 default-client-tx-limit=0 
      hide-ssid=no security-profile=default compression=no 

 1    name="wlan2" mtu=1500 mac-address=00:0C:42:6C:E5:B9 arp=enabled interface-type=Atheros 11N mode=ap-bridge ssid="ONE NET" frequency=2437 band=2ghz-b/g/n channel-width=20mhz scan-list=default 
      wireless-protocol=unspecified wds-mode=disabled wds-default-bridge=none wds-ignore-ssid=no bridge-mode=disabled default-authentication=yes default-forwarding=yes default-ap-tx-limit=0 
      default-client-tx-limit=0 hide-ssid=no security-profile=default compression=no 

 2    name="wlan3" mtu=1500 mac-address=00:0C:42:6C:E5:41 arp=enabled interface-type=Atheros 11N mode=ap-bridge ssid="ONE NET" frequency=2462 band=2ghz-b/g/n channel-width=20mhz scan-list=default 
      wireless-protocol=unspecified wds-mode=disabled wds-default-bridge=none wds-ignore-ssid=no bridge-mode=disabled default-authentication=yes default-forwarding=no default-ap-tx-limit=0 
      default-client-tx-limit=0 hide-ssid=no security-profile=default compression=no
2

Try with only one card active and see if it works. If it works, the cards interfere with each other.

3

We had a similar problem.

Rb 433GL is capable to fed 14W power for cards! In documentation R52Hn need cca 7W (Idle power consumption 0.4W,
Max power consumption 7W). That is your problem.

In my situation at one point I did not pay much attention to it, we have 3 sectors, with R52Hn and board is 433GL... till one day.. Customers report problem, no internet access!

I lost days in detecting what's wrong. Cabling, Ros ver., power supply.... Only thing I notice is that some days work ok, some not.

Then notice that if I try ping that board with large packets (1000+ bytes) 70% is lost.
I change 20 m Lan cable with best UTP... nothing. :laughing:

Then i decide to put board on my office instead tower at 500 m asl. And the problem is solved in 5 min... Because board was unreachable i restart it to def conf, remowe one wlan interfaces and try old config. Bingo! Works ok.

But I think 2 R52Hn is to much for RB433GL in heavy load.

4

Hello:
I’m thinking to put (3) R52Hn on a mikrotik board.

Which board can handle safely 3 R52Hn cards and have safe operation??

Help will be appreciated.

Thanks in advance for all.

5

Rb435g is a good choice.

6

If you do a scan from one card, what is the rx signal strength from the other cards?