TL-WR841N v8 5GHz WiFi?

Installing and Using OpenWrt Network and Wireless Configuration
1

Hi all, I'm running latest LEDE on a TL-WR841N-v8, actually I was wondering if this device is able to connect to a 5GHz WiFi network? Some hardware infos:

iw phy
Wiphy phy0
	max # scan SSIDs: 4
	max scan IEs length: 2257 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)
	Device supports AP-side u-APSD.
	Device supports T-DLS.
	Available Antennas: TX 0x3 RX 0x3
	Configured Antennas: TX 0x3 RX 0x3
	Supported interface modes:
		 * IBSS
		 * managed
		 * AP
		 * AP/VLAN
		 * monitor
		 * mesh point
		 * P2P-client
		 * P2P-GO
		 * outside context of a BSS
	Band 1:
		Capabilities: 0x11ef
			RX LDPC
			HT20/HT40
			SM Power Save disabled
			RX HT20 SGI
			RX HT40 SGI
			TX STBC
			RX STBC 1-stream
			Max AMSDU length: 3839 bytes
			DSSS/CCK HT40
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 8 usec (0x06)
		HT TX/RX MCS rate indexes supported: 0-15
		Frequencies:
			* 2412 MHz [1] (20.0 dBm)
			* 2417 MHz [2] (20.0 dBm)
			* 2422 MHz [3] (20.0 dBm)
			* 2427 MHz [4] (20.0 dBm)
			* 2432 MHz [5] (20.0 dBm)
			* 2437 MHz [6] (20.0 dBm)
			* 2442 MHz [7] (20.0 dBm)
			* 2447 MHz [8] (20.0 dBm)
			* 2452 MHz [9] (20.0 dBm)
			* 2457 MHz [10] (20.0 dBm)
			* 2462 MHz [11] (20.0 dBm)
			* 2467 MHz [12] (20.0 dBm)
			* 2472 MHz [13] (20.0 dBm)
			* 2484 MHz [14] (disabled)
	valid interface combinations:
		 * #{ managed } <= 2048, #{ AP, mesh point } <= 8, #{ P2P-client, P2P-GO } <= 1, #{ IBSS } <= 1,
		   total <= 2048, #channels <= 1, STA/AP BI must match, radar detect widths: { 20 MHz (no HT), 20 MHz, 40 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

and my /etc/config/wireless config:

config wifi-device 'radio0'
	option type 'mac80211'
	option hwmode '11g'
	option path 'platform/ar934x_wmac'
	option htmode 'HT40'
	option disabled '0'
	option channel '9'
	option country 'IT'

thanks in advance for feedback

2

The device is quite old and from the Frequencies section of the iw output you can see it only works in 2,4GHz.

1 Like
3

Allright, thanks for this feedback. Any speed increase here if I use HT40 mode? Thanks

4

It is already configured for HT40. Theoretically you could see more speed compared to HT20, but you spread your signal in a wider spectrum and it will be more prone to interference. So bear that in mind when you plan for the best channel and survey the area.

1 Like
5

That means 17.01.7?

2,4GHz only, see https://openwrt.org/toh/hwdata/tp-link/tp-link_tl-wr841n_v8 (and pay attention to the infobox on the top of the page)

1 Like
6

Yes

Allright, thanks.

7

Screenshot from 2020-04-02 19-22-46
on the device I see this so I presume it's the best that I can on that TPLink, for now

8

That is the theoretical best it can do. In practice expect much less.
If the problem is solved, feel free to mark the topic accordingly .