TP-Link Archer C7 V5: 5GHz channel SSID slow appear

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Abattoir
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Joined: 03 Feb 2021
Posts: 9

PostPosted: Wed Apr 14, 2021 17:30    Post subject: TP-Link Archer C7 V5: 5GHz channel SSID slow appear Reply with quote
Hello.

I have a TP-Link Archer C7 V5 router with 04-13-2021-r46329 on it.

When I turn off the WiFi on my phone or notebook and then turn it back then the 2.4 GHz SSID appears immediately but for the 5.0 GHz SSID I have to wait more. In some cases I have to turn off and then back the WiFi.

What can cause this?

Wireless settings:
https://imgur.com/a/MiSjvJQ

Thanks for your answers.
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msoengineer
DD-WRT Guru


Joined: 21 Jan 2017
Posts: 1665
Location: Illinois Moderator

PostPosted: Wed Apr 14, 2021 21:04    Post subject: Reply with quote
Change channels on the 5ghz radio. I would use 149+UU or 161+LL. Channel 120 is used for weather radar...worst possible channel to use....your client has to wait for the router to broadcast it's signal again which it can wait up to 1 minute for....The client is not allowed to ask the router for permission for channels 116-132.
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TIPS/TRICKS: Best QCA Wifi Settings | Latency tricks | QoS Port priority | NEVER USE MU-MIMO |
Why to NOT use MU-MIMO | Max Wifi Pwr by Country | Linux Wifi Pwr | AC MCS & AX MCS | QCA 5Ghz chnls to use | WIFI Freq WIKI | TFTP R7800 | Don't buy AX | IPERF3 How-To

[R9000]47449 nightly (Main Router)
[EA8500]43192 & 45493 (2xOffsite)
[R7800]napping
[WDR3600]BS 44715 (Offsite)
[A7v5]BS 43038 (Offsite+spare napping)
Abattoir
DD-WRT Novice


Joined: 03 Feb 2021
Posts: 9

PostPosted: Wed Apr 14, 2021 22:11    Post subject: Reply with quote
I can only use 149 and 161 channels with 14 dBm (25 mW). Is this enough?

DFS-ETSI
(2400 - 2483.5 @ 40), (100 mW)
(5150 - 5250 @ 80), (200 mW), NO-OUTDOOR, AUTO-BW, wmmrule=ETSI
(5250 - 5350 @ 80), (100 mW), NO-OUTDOOR, DFS, AUTO-BW, wmmrule=ETSI
(5470 - 5725 @ 160), (500 mW), DFS, wmmrule=ETSI
# short range devices (ETSI EN 300 440-1)
(5725 - 5875 @ 80), (25 mW)
# 60 GHz band channels 1-4 (ETSI EN 302 567)
(57000 - 66000 @ 2160), (40)

Now I’m trying 48 + 42 (5240 MHz VHT80) @ 23 dBm it seems to be good.
tatsuya46
DD-WRT Guru


Joined: 03 Jan 2010
Posts: 7493
Location: YWG, Canada

PostPosted: Wed Apr 14, 2021 23:53    Post subject: Reply with quote
change reg domain to something else if u want more power, canada, usa, haiti are some
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BrainSlayer wrote:
we just do it since we do not like any restrictions enforced by stupid cocaine snorting managers

[x86_64] Haswell i3-4150/QCA9984/QCA9882 ------> r47183 std
[QUALCOMM] DIR-862L --------------------------------> r47381 std
▲ ACTIVE / INACTIVE ▼
[QUALCOMM] WNDR4300 v1 --------------------------> r46350 std
[BROADCOM] DIR-860L A1 ----------------------------> r46329 std


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msoengineer
DD-WRT Guru


Joined: 21 Jan 2017
Posts: 1665
Location: Illinois Moderator

PostPosted: Thu Apr 15, 2021 13:29    Post subject: Reply with quote
Just realize that even if you change the router to use a different country for better TX pwr, your client is likely "smart" and will assign the local country based off GPS, sim card, or language selection. This means that the client is still required to operate under that table of TX values back to the router...clients almost always are power limited to 21dbm (125mW) any way under best case scenarios. So even if your router can push the signal farther, your client will be the limiting device.
_________________
FORUM RULES

TIPS/TRICKS: Best QCA Wifi Settings | Latency tricks | QoS Port priority | NEVER USE MU-MIMO |
Why to NOT use MU-MIMO | Max Wifi Pwr by Country | Linux Wifi Pwr | AC MCS & AX MCS | QCA 5Ghz chnls to use | WIFI Freq WIKI | TFTP R7800 | Don't buy AX | IPERF3 How-To

[R9000]47449 nightly (Main Router)
[EA8500]43192 & 45493 (2xOffsite)
[R7800]napping
[WDR3600]BS 44715 (Offsite)
[A7v5]BS 43038 (Offsite+spare napping)
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