Hello everyone,
with the new version of the operating system(7.x L41G-2axD ) how can you maximize the wifi power?
I selected Italy as the country.
I like to go to Australia.
On my Audience, running 7.18.2, country regulatory limit for 2.4GHz band (which is all what hAP ax lite has) for Australia is the same as for Italy (and the rest of ETSI countries) … which is 20dBm EIRP. Alas, Brazil has limit at 30dBm … making Copacabana my place of choice for 2.4GHz band.
Thanks for the reply,
but can the WiFi power increase be done only by changing country or is there a different place to set low, medium or high?
THANKS
Actual transmitted power depends on:
- chipset capability (e.g. hAP ax lite can do up to 22dBm, but it gets reduced with higher interface speeds - more complex modulation schemes require tighter power control and seems that most WiFi chips are not capable of doing it at highest Tx power, hence Tx power backoff)
- country regulatory limitations … which are about EIRP and that one includes antenna gain (hAP ax lite has antenna gain 4.3 … or 5 rounded up, ROS can only do integer maths)
- manual setting of tx-power
And actual Tx power at any time is the lowest of the three limits.
It is not possible to affect the bullet #1. Default setting of bullet #3 is (IIRC) 30dBm so usually not an issue. Which leaves bullet #2 … and “moving to” Brazil (or some other country with higher regulatory limits) helps in this case.
Do not forget that WiFi is a two-way protocol, so actual speed also depends on client device’s capabilities - most of the client devices are two-chain with regulated power. Pushing the AP power may have point when you also have MT or smth else for a client.
Indeed. Device’s Tx power can limit upload speeds, but I guess this is not a huge issue (until the asymmetry is not too big) because most wireless stations use data in asymmetrical manner as well (more of downlink and less of uplink). And lack of device’s Tx power most often means that at same range (where downlink still works satisfactory) uplink speeds drop due to fall-back to more robust modulation schemes at which Tx power backoff is less (and Rx sensitivity is better).
But device’s Rx sensitivity does affect downlink speeds and some devices are more “deaf” than others.
Because there is a LTE modem on board can achieve 25dBm with Australia or Superchannel selected?
Presence of LTE modem has nothing to do with WiFi Tx power.
But I’ll be damned: I went to check reg-info for Australia on different wifi devices, all running ROS 7.18.2. As I already mentioned, on Audience regulatory limit is set at 20dBm. But when checking on wAP ax I was mighty surprised, there reg-info says the limit is at 36dBm. On RB951G (running legacy wireless driver) limit is 36dBm as well. On hAP ac2 (without any wifi driver, it’s used as main router and CAPsMAN) the limit is 20dBm.
I also checked a few older devices, which are running ROS 6.49.18: hAP has limit at 36dBm, hAP ac lite as well.
So I’ve no idea about why a few devices have much lower country limit for Tx power for Australia. I’d say it’s because of wifi-qcom-ac driver but my hAP ac2 doesn’t run any wifi driver.
Hello to all,
I have this device operating system(7.x L41G-2axD ) , the wifi is very very slow.
https://mikrotik.com/product/hap_ax_lite
of the theoretical speed of 574 Mbit/s, with a speed test I can only reach 80/90 Mbit/s, why?
With another low-end device, connected with the same cable, TP-Link Archer AX55 Router WiFi 6 Dual-Band AX3000Mbps, 5 Gigabit Ports, I reach speeds of 400/500 Mbit/s. I don’t think the problem is just the issue of 5Ghz?
They asked me to replace the L41G-2axD devices with others, it’s a defeat, can you help me understand if the problem is hardware or I can change the configuration?
Thanks
Be careful not to mix up things: data rate is not what you can see when doing speed test.
AX Lite doesn’t have 5GHz.
But using 2.4GHz from AX Lite towards AX3 (last time I did that test) I was able to reliably push 400Mbps over that link.
So it’s probably not HW. Must be config or context of surrounding environment.
Neither of those 2 factors are presented here for review ?
The Ax lite is a single band (2.4 GHz) and Ax600 (574 rounded up to 600).
Mikrotik dual band AX devices marked Wi-Fi 6 (like the Ax2) are Ax1800 which should mean (574 rounded to 600+1200=1800):
at 2.4 GHz 574 Mbit/s
at 5 Ghz 1200 Mbit/s
so the 5 GHz is in theory double the speed of 2.4 GHz (reach/coverage is another thing).
The Archer Ax55 is not so low-end, they classify it as Ax3000 as follows:
AX3000
5 GHz: 2402 Mbps (802.11ax, HE160)
2.4 GHz: 574 Mbps (802.11ax)
So in it the theoretical speed at 5 GHz is 2402/574=4.2 times the 2.4 Ghz one, you can only compare the Ax55 with the 5 GHz radio disabled and see what you get then.
Anyway 80/90 sounds too low even for the Ax lite, I would have expected no less than half the theoretical 574, like 300 or so, maybe you have some configuration issue or you are not using it “normally” as bridged access point.
Follow these instructions and post your configuration for review:
http://forum.mikrotik.com/t/forum-rules/173010/1
I have AX lite and AX2, and I can assure you that both of these devices are similar in some way.
It makes no sense to increase the power on both by changing the region, it does not give any result. Perhaps for AX3 it makes sense, since it has external antennas, but on AX lite and AX2 with internal antennas, there is no sense in changing the power.
As for the speed, the usual speed on AX lite for me is about 60-80 Mbps, at the peak of performance I saw 110-120 Mbps, but no more. (My client devices iPhone 11, iPad, Notebook).
Also, speed does not depend on your configuration, since there is nothing special to configure there. Therefore, I think that the previous answer is a mistake.
The speed will depend only on the support of the client device and the distance, interference.
AX lite itself works very well.
Of the special points, I would note - that AX lite is very sensitive to nearby electromagnetic sources of interference. Or some metal objects, computer case, TV, metal profiles in the wall. Located close, less than 1 foot to the router.
Hello,
this is my config file.
please help me
# 2025-06-04 11:29:21 by RouterOS 7.18.1
# software id = 8456-4444
#
# model = L41G-2axD
# serial number = 000000000
/interface bridge
add name=bridge1
/interface wifi
set [ find default-name=wifi1 ] channel.band=2ghz-ax .width=20/40mhz comment=\
" salone wifi" configuration.country=Brazil .mode=ap .ssid=\
"salone" disabled=no name="wifi salone" \
security.authentication-types=wpa2-psk,wpa3-psk
/interface bridge port
add bridge=bridge1 interface="wifi salone"
add bridge=bridge1 interface=ether1
add bridge=bridge1 interface=ether2
add bridge=bridge1 interface=ether3
add bridge=bridge1 interface=ether4
/ip neighbor discovery-settings
set discover-interface-list=!dynamic
/interface ovpn-server server
add mac-address=00:00:00:00:00:00 name=ovpn-server1
/ip dhcp-client
add interface=bridge1
/ip ipsec profile
set [ find default=yes ] dpd-interval=2m dpd-maximum-failures=5
/system clock
set time-zone-name=Europe/Rome
/system identity
set name="salone"
/system note
set show-at-login=no
What frequency are you using for your wifi and how congested is the environment around you ?
Make sure to use one of the least occupied channels (ideally a clear channel but if that doesn’t work, use the least congested one).
It might sometimes even be better to REDUCE channel width to 20MHz if you can then use a channel nobody around you is using.
But using 2.4GHz, chances are high there will be quite some others using overlapping channels …
Hello,
I didn’t understand,
thanks
Have you handy an Android smartphone?
If yes, get this:
https://www.wifianalyzer.info/
scan your environment for wi-fi signals on the 2.4GHz band.
Try to set the Ax lite to a channel that doesn’t overlap with other, if the channel width of the channel you choose overlaps with near occupied ones, try narrowing its width.
If you have a situation similar to this:
https://www.wifianalyzer.info/layout/s-1-min.png
try chosing where the hole between peaks is (Channel 11 or 12 for the example image) then try on it with different widths (but usually 20 or 40 work better or not so much worse than wider ones as these latter are much more prone to interferences).
Peaks lower than -75 or -80 or so should be irrelevant or however have little consequences.
Some explanations:
https://www.cbtnuggets.com/blog/certifications/cisco/when-to-use-20mhz-vs-40mhz-vs-80mhz
WOW, thanks, I understood.! 
Now I just want to know how to change the channel (1-6 or 11-14 ).
Now I want to know how to change different widths, 20 or 40.
please help me
thanks
Here starts the fun part.
In almost any other router you would find somewhere a drop down list with numbers 1 to 11.
But It Is too simple for Mikrotik, here you need to find the channel corresponding frequency.
https://en.m.wikipedia.org/wiki/List_of_WLAN_channels
Example for channel 11 → 2462 MHz.
Then you choose the width, you can try 40 MHz, but in most cases you will need to use 20 MHz.
If you search a bit, you should be able to find suitable tutorial or blog articles, most will be for the “old” wireless, but the settings are very similar also in the “new” wifi sections.
Official help page Is here:
https://help.mikrotik.com/docs/spaces/ROS/pages/8978446/Wireless+Interface