My tplink 1043nd got in stack in 20mhz txpower

Installing and Using OpenWrt
1

Hi guys.

my tplink 1043nd running 'OpenWrt 18.06.8 r7989-82fbd85747' got in srack in 20 dbm txpower
nonetheless I see it's possible to use 30mhz for region CA (Canada) (marked bold bellow)

root@ap:/home/sam# iw reg get
global
country CA: DFS-FCC
        ***(2402 - 2472 @ 40), (N/A, 30), (N/A)***
        (5150 - 5250 @ 80), (N/A, 23), (N/A), NO-OUTDOOR, AUTO-BW
        (5250 - 5350 @ 80), (N/A, 24), (0 ms), DFS, AUTO-BW
        (5470 - 5600 @ 80), (N/A, 24), (0 ms), DFS
        (5650 - 5730 @ 80), (N/A, 24), (0 ms), DFS
        (5735 - 5835 @ 80), (N/A, 30), (N/A)

phy#0
country US: DFS-FCC
        (2402 - 2472 @ 40), (N/A, 30), (N/A)
        (5170 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW
        (5250 - 5330 @ 80), (N/A, 23), (0 ms), DFS, AUTO-BW
        (5490 - 5730 @ 160), (N/A, 23), (0 ms), DFS
        (5735 - 5835 @ 80), (N/A, 30), (N/A)
        (57240 - 63720 @ 2160), (N/A, 40), (N/A)

root@ap:/home/sam#

This router still use 20 dbm TX power signal:

root@ap:/home/sam# iwinfo wlan0 info | grep ower
          Tx-Power: 20 dBm  Link Quality: 55/70
          TX power offset: unknown
root@ap:/home/sam#

I see avaliable TX power for that router is 25mhz:

root@ap:/home/sam# iwinfo wlan0 tx
   0 dBm (   1 mW)

-= ommited for briefly =-

  19 dBm (  79 mW)
* 20 dBm ( 100 mW)
  21 dBm ( 125 mW)
  22 dBm ( 158 mW)
  23 dBm ( 199 mW)
  24 dBm ( 251 mW)
  25 dBm ( 316 mW)

changin TX power manually executed w/o errors notifications:

root@ap:/home/sam# 
root@ap:/home/sam# iwconfig wlan0 txpower 25
root@ap:/home/sam#

but I see TX power still 20 dbm:

 root@ap:/home/sam# 
root@ap:/home/sam# iwinfo wlan0 info | grep ower
          Tx-Power: 20 dBm  Link Quality: 59/70
          TX power offset: unknown
root@ap:/home/sam#

could somebody explain how to increase TX power from 20 to 25 dbm

Thank you in advance.

2

Where are you located (country) and where is the router from (country of distribution/purchase)?

Many routers have the country code for the WiFi radio burned into a non-rewritable portion of memory. The country codes set the radio power, channels, and other details such that it complies with regulations in the region. It is illegal in many jurisdictions to operate a radio with higher power or different channel settings other than those allowed by the laws and regardless in your area.

3

both in Canada.

region database shows it poosible to use 30dbm. that router prodused in Canada has bdm of 23. So, I'm assuming it can does 23 (of 30 allowed here).
Question is. How to increase tx level? Do I need device to rewrite EPROM chip?

4

I think you are looking at dfs.

5

DFS is not an issue here, as the tl-wr1043nd is a 2.4 GHz only single-band device, but the hardware has its own limits - barely any consumer hardware will do 1 watt (and the tl-wr1043nd certainly won't).

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