Low Bandwidth Issue with NetBox5 AX Pair and MANT30 Antennas

RouterOS Wireless Networking
1

hi

I am experiencing low bandwidth issue with my MikroTik NetBox5 AX pair, which is paired with MANT30 antennas. Despite using 80 MHz and 160 MHz channel widths, I am only achieving bandwidths of 400 to 450 Mbps on 80mhz and 400 Mbps on 160mhz, respectively, within a single room. This performance is significantly lower than expected for these configurations.

Here are the details of my setup:

Device Model: NetBox5 AX (Pair)
Antenna Model: MANT30
Channel Width: 80 MHz and 160 MHz
Observed Bandwidth: 400-450 Mbps on 80 MHz, 400 Mbps on 160 MHz
Environment: Single room with minimal physical obstructions
Could anyone please provide guidance on troubleshooting this issue? I have already verified the following:

Firmware is up-to-date 7.15.3 stable.
Channel settings are optimized and not overlapping with other devices.
Devices and antennas are within a close range of each other with minimal interference.

hear is config of ap

2024-09-07 16:27:06 by RouterOS 7.15.3

software id =

model = L11UG-5HaxD

/interface bridge
add admin-mac= auto-mac=no comment=defconf name=bridge
/interface wifi
set [ find default-name=wifi1 ] channel.band=5ghz-ax .skip-dfs-channels=all
.width=80mhz configuration.country=Russia .distance=0 .mode=ap .ssid=
“NETBOX 5AX” disabled=no security.authentication-types=wpa2-psk,wpa3-psk
.ft=yes .ft-over-ds=yes
/interface list
add name=WAN
add name=LAN
/interface bridge port
add bridge=bridge comment=defconf interface=ether1
add bridge=bridge comment=defconf interface=wifi1
/interface list member
add interface=ether1 list=WAN
add interface=bridge list=LAN
/ip address
add address=10.11.10.1/24 interface=bridge network=10.11.10.0
/ip dhcp-client
add comment=defconf interface=bridge

DHCP client can not run on slave or passthrough interface!

add interface=ether1
/system clock
set time-zone-name=Asia/Kolkata
/system note
set show-at-login=no

config of station

1970-01-02 00:05:39 by RouterOS 7.15.3

model = L11UG-5HaxD

serial number =

/interface bridge
add admin-mac=D4:01:C3:BA:1D:A6 auto-mac=no comment=defconf name=bridge
/interface wifi
set [ find default-name=wifi1 ] channel.band=5ghz-ax .skip-dfs-channels=all
.width=20/40/80/160mhz configuration.country=Russia .mode=station-bridge
.ssid=“NETBOX 5AX” disabled=no security.authentication-types=
wpa2-psk,wpa3-psk .ft=yes .ft-over-ds=yes
/interface bridge port
add bridge=bridge comment=defconf interface=ether1
add bridge=bridge comment=defconf interface=wifi1
/ip dhcp-client
add comment=defconf interface=bridge
/system note
set show-at-login=no
netbox 5ax 160mhz.jpg
netbox 5ax 80mhz.jpg

2

Can you post your config export?

Be sure you have your Country / Region set. What 5Ghz Frequency are you using? I believe 5220 is MikroTik “sweet spot”. Lastly, since newer 7.13? release – you have to manually configure distance value.

3

At what signal strength do the points see each other?
Most likely the problem is in incorrect experimental conditions

4

finaly romoved netbox5 ax and installed mimosa C5c devices now stable signal -59 distance is 25km and bandwidth is around 500 mbps.

5

Exactly. Great job.

6

http://forum.mikrotik.com/t/worst-performance-of-netbox-5ax-is-there-any-user-who-uses-this-netbox-5ax/179537/1

I’m deeply disappointed with the MikroTik NetBox AX I use it with a Ubiquiti Sector Antenna AMO-5G-19dBi. I purchased these for my WISP setup, but none of my CPE devices can detect the NetBox AX signal. After significant effort, I had to shelve these products. MikroTik seems to rely on users as their quality testers, releasing products without sufficient R&D and constantly modifying based on user feedback. This feels like they’re experimenting with customers’ money. Previously,I run a WISP and previously used over 100 Ubiquiti APs and CPEs. I decided to switch to MikroTik Wireless, hoping for better performance, but it’s nowhere near as efficient as Ubiquiti.