Signal strength with WNDR3800

[nworbnhoj]

The 2.4GHz one probably makes sense.

Yep, but ...

The 5GHz one i'd have to know which channel you are on, but you can maybe squeeze a few more dB out of it.

I should be able to get 23dB out of the 5gHz right? but...

Code: Select all

# iwinfo wlan1 txpowerlist
   0 dBm (   1 mW)
   1 dBm (   1 mW)
   2 dBm (   1 mW)
   3 dBm (   1 mW)
   4 dBm (   2 mW)
   5 dBm (   3 mW)
   6 dBm (   3 mW)
   7 dBm (   5 mW)
   8 dBm (   6 mW)
   9 dBm (   7 mW)
  10 dBm (  10 mW)
  11 dBm (  12 mW)
  12 dBm (  15 mW)
  13 dBm (  19 mW)
  14 dBm (  25 mW)
  15 dBm (  31 mW)
  16 dBm (  39 mW)
  17 dBm (  50 mW)
  18 dBm (  63 mW)
* 19 dBm (  79 mW)

# iw dev wlan1 set txpower fixed 2300

# iwinfo
wlan1     ESSID: "abc"
          Access Point: 14:CC:20:5E:D5:2B
          Mode: Master  Channel: 149 (5.745 GHz)
          Tx-Power: 19 dBm  Link Quality: 51/70
          Signal: -59 dBm  Noise: -95 dBm
          Bit Rate: 180.0 MBit/s
          Encryption: WPA2 PSK (CCMP)
          Type: nl80211  HW Mode(s): 802.11an
          Hardware: 168C:0033 168C:A120 [Atheros AR9580]
          TX power offset: none
          Frequency offset: none
          Supports VAPs: yes  PHY name: phy1

[Lantis]

I can definitely achieve it.

Code: Select all

wlan1     ESSID: "abc"
          Access Point: 84:1B:5E:7A:80:0F
          Mode: Master  Channel: 149 (5.745 GHz)
          Tx-Power: 23 dBm  Link Quality: unknown/70
          Signal: unknown  Noise: -95 dBm
          Bit Rate: unknown
          Encryption: WPA2 PSK (CCMP)
          Type: nl80211  HW Mode(s): 802.11an
          Hardware: 168C:0029 168C:A094 [Atheros AR9220]
          TX power offset: none
          Frequency offset: none
          Supports VAPs: yes  PHY name: phy1

Its possible the antenna is ~7dB gain which means that the hardware self-limits to stay under 30.
That would be speculation though i dont have data on the antennas.

There is no single router I know of that supports 500mW tx power setting. That value is merely the theoretical upper bound allowed by legal regulations. Physical hardware limits are usually way less

[nworbnhoj]

My router is a WDR3600 rather than a 3800 so maybe the hardware spec is different? But I thought that "iw list" relates to self reported hardware specs.

Also, I understood that the "TX power offset: none " relates to the adjustment for antenna gain?