Ac86u not broadcasting channels 36-48

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Silentsoul

Occasional Visitor
I turned my Asus rtac86u off yesterday morning for a hard reboot. After coming back online. I noticed the 5ghz band was not broadcasting at all. (Could not even locate it with wifi scanning tools). I proceeded to reboot the device again. Same result.
I proceeded to reinstall the current Asus firmware with a hard reset using the WPS button. After reconfiguring I was presented with much the same. Did the same with the most current Merlin firmware and came up with the same result.
Tried other things such as leaving it unplugged after a hard reset for a few minutes but nothing helped. After some fiddling I can get the 5ghz to work but only on channel 149 or higher. I know some regions are restricted but 36-48 should and always has worked here in the US.
Is it possible there is an issue with the hardware that would only affect those channels?

Any ideas would be appreciated, thanks!
 

ColinTaylor

Part of the Furniture
Now I'm even more stumped because I went and purchased a Ax86u and it's doing the same thing.
You didn't reload a settings file from your old router onto your new one did you?
 

thiggins

Mr. Easy
Staff member
How are you determining which channels are active?
 

thiggins

Mr. Easy
Staff member
Have you tried more than one client device. Since the problem is common to two different routers, it could be the device.
 

Silentsoul

Occasional Visitor
Have you tried more than one client device. Since the problem is common to two different routers, it could be the device.
I have about 15 devices that I connect to the 5ghz band in my home. None can even see the network. Also does not show up as even existing on wifi scanner.
 

ColinTaylor

Part of the Furniture
What do you see under the 5 GHz section of the router's System Log > Wireless Log page?
 

Silentsoul

Occasional Visitor
What do you see under the 5 GHz section of the router's System Log > Wireless Log page?

I just changed it to auto, put itself on channel 44.. wifi is gone now.



SSID: "Thunder"
noise: -92 dBm Channel: 9
BSSID: 04:92:26:80:33:08 Capability: ESS ShortSlot RRM
Supported Rates: [ 1(b) 2(b) 5.5(b) 6 9 11(b) 12 18 24 36 48 54 ]
VHT Capable:
Chanspec: 2.4GHz channel 9 20MHz (0x1009)
Primary channel: 9
HT Capabilities:
Supported HT MCS : 0-23
Supported VHT MCS:
NSS1 Tx: 0-11 Rx: 0-11
NSS2 Tx: 0-11 Rx: 0-11
NSS3 Tx: 0-11 Rx: 0-11

Interference Level: Acceptable
Mode : AP Only

Stations List
----------------------------------------
idx MAC Associated Authorized RSSI PHY PSM SGI STBC MUBF NSS Tx rate Rx rate Connect Time
Yes Yes -58dBm n No Yes Yes No 1 72.2M 72.2M 00:00:37
Yes Yes -40dBm n No Yes Yes No 1 72.2M 1M 00:01:10
Yes Yes -55dBm n No Yes Yes No 1 65M 1M 00:01:12
Yes Yes -63dBm n No Yes Yes No 2 130M 144.4M 00:01:12
Yes Yes -56dBm n No Yes Yes No 2 144.4M 144.4M 00:01:12
Yes Yes -42dBm n No Yes Yes No 1 65M 1M 00:01:13
Yes Yes -38dBm n No Yes No No 1 58.5M 72.2M 00:01:16

SSID: "Lightning"
noise: -88 dBm Channel: 44/80
BSSID: 04:92:26:80:33:0C Capability: ESS RRM
Supported Rates: [ 6(b) 9 12(b) 18 24(b) 36 48 54 ]
VHT Capable:
Chanspec: 5GHz channel 42 80MHz (0xe22a)
Primary channel: 44
HT Capabilities:
Supported HT MCS : 0-31
Supported VHT MCS:
NSS1 Tx: 0-11 Rx: 0-11
NSS2 Tx: 0-11 Rx: 0-11
NSS3 Tx: 0-11 Rx: 0-11
NSS4 Tx: 0-11 Rx: 0-11

Interference Level: Acceptable
Mode : AP Only

DFS status: state IDLE time elapsed 0ms radar channel cleared by DFS none

Channel Information
----------------------------------------
Channel 36 A Band
Channel 40 A Band
Channel 44 A Band
Channel 48 A Band
Channel 52 A Band, RADAR Sensitive, Passive
Channel 56 A Band, RADAR Sensitive, Passive
Channel 60 A Band, RADAR Sensitive, Passive
Channel 64 A Band, RADAR Sensitive, Passive
Channel 100 A Band, RADAR Sensitive, Passive
Channel 104 A Band, RADAR Sensitive, Passive
Channel 108 A Band, RADAR Sensitive, Passive
Channel 112 A Band, RADAR Sensitive, Passive
Channel 116 A Band, RADAR Sensitive, Passive
Channel 132 A Band, RADAR Sensitive, Passive
Channel 136 A Band, RADAR Sensitive, Passive
Channel 140 A Band, RADAR Sensitive, Passive
Channel 149 A Band
Channel 153 A Band
Channel 157 A Band
Channel 161 A Band
Channel 165 A Band

Stations List
----------------------------------------
idx MAC Associated Authorized RSSI PHY PSM SGI STBC MUBF NSS Tx rate Rx rate Connect Time
 
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ColinTaylor

Part of the Furniture
I just changed it to auto, put itself on channel 44.. wifi is gone now.

Strange. Your log shows a device connected to the 5GHz channel:

Stations List
----------------------------------------
idx MAC Associated Authorized RSSI PHY PSM SGI STBC MUBF NSS Tx rate Rx rate Connect Time
46:DF:C9:E1:32:2 Yes Yes -45dBm ac No Yes Yes No 1 390M 6M 00:00:08
 

Silentsoul

Occasional Visitor
Strange. Your log shows a device connected to the 5GHz channel:
It actually did show up for a few seconds when i changed it to auto, it doesn't show up on wifi scanner now.
 

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ColinTaylor

Part of the Furniture
It actually did show up for a few seconds when i changed it to auto, it doesn't show up on wifi scanner now.
Were there any useful messages in System Log > General Log at the time it disappeared.
 
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L&LD

Part of the Furniture
Where is the router located? Are you in a densely crowded Wi-Fi space?

Was the router ever fully reset via the WPS method, after flashing the latest firmware?

Where was it purchased? What is the manufacturing location?
 

Silentsoul

Occasional Visitor
Where is the router located? Are you in a densely crowded Wi-Fi space?

Was the router ever fully reset via the WPS method, after flashing the latest firmware?

Where was it purchased? What is the manufacturing location?
There is only 1 5ghz wifi other than mine that's in range.

Yes the router was reset with wps after I reinstalled the asus fw and the merlin.

Was purchased in 2018 on Amazon.

Production year: 2018

Made in China
 
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L&LD

Part of the Furniture
2018 RT-AC86U? Yes, that may be a hardware issue.

You must reset after flashing the firmware you want to use.
 

Silentsoul

Occasional Visitor
2018 RT-AC86U? Yes, that may be a hardware issue.

You must reset after flashing the firmware you want to use.

They were reset afterwards. I worded that odd sorry.

I figured it was a hardware issue as well but if you read my second post I purchased a Ax86u today and it literally did the exact same thing so I'm clueless now.
 

L&LD

Part of the Furniture
How long are you waiting for the 5GHz band to show?

Have you tested with the latest RMerlin VPN Director Alphas?
 

Silentsoul

Occasional Visitor
How long are you waiting for the 5GHz band to show?

Have you tested with the latest RMerlin VPN Director Alphas?

If it's on channel 36-48 it doesn't come on after any period of time.

No, honestly not sure what that is.
 

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