Tplink Archer C2 v1 lastest trunk limit 12dBm txpower

I've installed latest trunk on my Router Tplink archer C2 v1, but wlan0 5Ghz limit 12dBm?
How to increase txpower >12 dBm
Thanks

Hello, what do you get with the command iw reg get and which channel are you using?

Post your output with the preformatted text function "</>"!

1 Like

Per TP-Link specs it should be:

CE:
<20dBm(2.4GHz)
<23dBm(5GHz)
FCC:
<30dBm

Well, that depends on your country. Have you set the country in the settings?

The same issue is with D-Link DWR-118A1 with the same MT7610 chip. I think, at this moment MT76 driver can't set higher power for this device.

1 Like

hi Juppin, here's my output:

root@ArcherC2:~# iw reg get
global
country 00: DFS-UNSET
        (2402 - 2472 @ 40), (N/A, 20), (N/A)
        (2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, PASSIVE-SCAN
        (5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW
        (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
        (5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN
        (5735 - 5835 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN
        (57240 - 63720 @ 2160), (N/A, 0), (N/A)

root@ArcherC2:~#

According to the regulation db you should be able to set a max of 20 db on every 5 ghz channel.

Which channel are you using and can you post also the output of iw info?

What could be is that the driver changed to only real amp power instead of real amp power + antenna gain...
If you have a 8 dbi antenna and sending with 12 dbi from the wireless amplifier, then the resulting output power would be 20 dbi.

Hi juppin, here's my output:

root@ArcherC2:~# iw phy0 info
Wiphy phy0
        max # scan SSIDs: 4
        max scan IEs length: 2243 bytes
        max # sched scan SSIDs: 0
        max # match sets: 0
        max # scan plans: 1
        max scan plan interval: -1
        max scan plan iterations: 0
        Retry short limit: 7
        Retry long limit: 4
        Coverage class: 0 (up to 0m)
        Available Antennas: TX 0x1 RX 0x1
        Supported interface modes:
                 * IBSS
                 * managed
                 * AP
                 * AP/VLAN
                 * monitor
                 * mesh point
        Band 1:
                Capabilities: 0x17e
                        HT20/HT40
                        SM Power Save disabled
                        RX Greenfield
                        RX HT20 SGI
                        RX HT40 SGI
                        RX STBC 1-stream
                        Max AMSDU length: 3839 bytes
                        No DSSS/CCK HT40
                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
                Minimum RX AMPDU time spacing: 4 usec (0x05)
                HT TX/RX MCS rate indexes supported: 0-7
                Frequencies:
                        * 2412 MHz [1] (30.0 dBm)
                        * 2417 MHz [2] (30.0 dBm)
                        * 2422 MHz [3] (30.0 dBm)
                        * 2427 MHz [4] (30.0 dBm)
                        * 2432 MHz [5] (30.0 dBm)
                        * 2437 MHz [6] (30.0 dBm)
                        * 2442 MHz [7] (30.0 dBm)
                        * 2447 MHz [8] (30.0 dBm)
                        * 2452 MHz [9] (30.0 dBm)
                        * 2457 MHz [10] (30.0 dBm)
                        * 2462 MHz [11] (30.0 dBm)
                        * 2467 MHz [12] (disabled)
                        * 2472 MHz [13] (disabled)
                        * 2484 MHz [14] (disabled)
        Band 2:
                Capabilities: 0x17e
                        HT20/HT40
                        SM Power Save disabled
                        RX Greenfield
                        RX HT20 SGI
                        RX HT40 SGI
                        RX STBC 1-stream
                        Max AMSDU length: 3839 bytes
                        No DSSS/CCK HT40
                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
                Minimum RX AMPDU time spacing: 4 usec (0x05)
                HT TX/RX MCS rate indexes supported: 0-7
                VHT Capabilities (0x31800120):
                        Max MPDU length: 3895
                        Supported Channel Width: neither 160 nor 80+80
                        short GI (80 MHz)
                        RX antenna pattern consistency
                        TX antenna pattern consistency
                VHT RX MCS set:
                        1 streams: MCS 0-7
                        2 streams: not supported
                        3 streams: not supported
                        4 streams: not supported
                        5 streams: not supported
                        6 streams: not supported
                        7 streams: not supported
                        8 streams: not supported
                VHT RX highest supported: 0 Mbps
                VHT TX MCS set:
                        1 streams: MCS 0-7
                        2 streams: not supported
                        3 streams: not supported
                        4 streams: not supported
                        5 streams: not supported
                        6 streams: not supported
                        7 streams: not supported
                        8 streams: not supported
                VHT TX highest supported: 0 Mbps
                Frequencies:
                        * 5180 MHz [36] (12.0 dBm)
                        * 5200 MHz [40] (11.0 dBm)
                        * 5220 MHz [44] (11.0 dBm)
                        * 5240 MHz [48] (10.0 dBm)
                        * 5260 MHz [52] (10.0 dBm) (radar detection)
                        * 5280 MHz [56] (10.0 dBm) (radar detection)
                        * 5300 MHz [60] (10.0 dBm) (radar detection)
                        * 5320 MHz [64] (10.0 dBm) (radar detection)
                        * 5500 MHz [100] (11.0 dBm) (radar detection)
                        * 5520 MHz [104] (11.0 dBm) (radar detection)
                        * 5540 MHz [108] (11.0 dBm) (radar detection)
                        * 5560 MHz [112] (11.0 dBm) (radar detection)
                        * 5580 MHz [116] (11.0 dBm) (radar detection)
                        * 5600 MHz [120] (11.0 dBm) (radar detection)
                        * 5620 MHz [124] (11.0 dBm) (radar detection)
                        * 5640 MHz [128] (11.0 dBm) (radar detection)
                        * 5660 MHz [132] (11.0 dBm) (radar detection)
                        * 5680 MHz [136] (12.0 dBm) (radar detection)
                        * 5700 MHz [140] (12.0 dBm) (radar detection)
                        * 5745 MHz [149] (12.0 dBm)
                        * 5765 MHz [153] (12.0 dBm)
                        * 5785 MHz [157] (12.0 dBm)
                        * 5805 MHz [161] (12.0 dBm)
                        * 5825 MHz [165] (12.0 dBm)
        valid interface combinations:
                 * #{ IBSS } <= 1, #{ managed, AP, mesh point } <= 8,
                   total <= 8, #channels <= 1, STA/AP BI must match, radar detect widths: { 20 MHz (no HT), 20 MHz, 40 MHz, 80 MHz }

        HT Capability overrides:
                 * MCS: ff ff ff ff ff ff ff ff ff ff
                 * maximum A-MSDU length
                 * supported channel width
                 * short GI for 40 MHz
                 * max A-MPDU length exponent
                 * min MPDU start spacing
        Supported extended features:
                * [ VHT_IBSS ]: VHT-IBSS
                * [ RRM ]: RRM
                * [ CQM_RSSI_LIST ]: multiple CQM_RSSI_THOLD records
                * [ CONTROL_PORT_OVER_NL80211 ]: control port over nl80211
                * [ TXQS ]: FQ-CoDel-enabled intermediate TXQs
root@ArcherC2:~# ^C
root@ArcherC2:~#

And:

wlan0     ESSID: "5Ghz"
          Access Point: 00:0C:43:26:60:08
          Mode: Master  Channel: 36 (5.180 GHz)
          Tx-Power: 12 dBm  Link Quality: unknown/70
          Signal: unknown  Noise: unknown
          Bit Rate: unknown
          Encryption: none
          Type: nl80211  HW Mode(s): 802.11bgnac
          Hardware: 14C3:7650 14C3:7650 [MediaTek MT7610E]
          TX power offset: none
          Frequency offset: none
          Supports VAPs: yes  PHY name: phy0

wlan1     ESSID: "2.4Ghz"
          Access Point: 18:A6:F7:2E:68:23
          Mode: Master  Channel: 11 (2.462 GHz)
          Tx-Power: 30 dBm  Link Quality: unknown/70
          Signal: unknown  Noise: unknown
          Bit Rate: unknown
          Encryption: none
          Type: nl80211  HW Mode(s): 802.11bgn
          Hardware: unknown [Generic MAC80211]
          TX power offset: unknown
          Frequency offset: unknown
          Supports VAPs: yes  PHY name: phy1

root@ArcherC2:~#