I've got my router broadcasting two wifi networks - one on 2.4GHz and one on 5GHz. Using a wifi scanner on my phone, I can see that both networks are available:
However when I scan for these endpoints on my desktop using a AR93xx Wireless Network Adapter from Qualcomm, while it is able to see the 2.4GHz network fine it cannot see the 5GHz one at all.
Why would this be so? It does see other 5Ghz networks in the area:
sudo iwlist wlo1 scan
wlo1 Scan completed :
Cell 01 - Address: AE:F8:CC:06:1F:18
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=47/70 Signal level=-63 dBm
Encryption key:on
ESSID:"Ziggo"
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=000000009cb5a032
Extra: Last beacon: 68ms ago
IE: Unknown: 00055A6967676F
IE: Unknown: 01088C129824B048606C
IE: Unknown: 030106
IE: Unknown: 0706455520010D14
IE: Unknown: 2A0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : 802.1x
IE: Unknown: 3B025100
IE: Unknown: 2D1A2D0017FFFFFF00000000000000C2010100000000001004870100
IE: Unknown: 3D1606000400000000000000000000000000000000000000
IE: Unknown: 7F080500000200000040
IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
Cell 02 - Address: <>
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=49/70 Signal level=-61 dBm
Encryption key:on
ESSID:"<my network>8-2.4GHz"
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=000000009cb59dd8
Extra: Last beacon: 68ms ago
IE: Unknown: 00135A6967676F383730383433382D322E3447487A
IE: Unknown: 01088C129824B048606C
IE: Unknown: 030106
IE: Unknown: 0706455520010D14
IE: Unknown: 2A0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: 46050200000000
IE: Unknown: 3B025100
IE: Unknown: 46050200000000
IE: Unknown: 2D1A2D0017FFFFFF00000000000000C2010100000000001004870100
IE: Unknown: 3D1606000400000000000000000000000000000000000000
IE: Unknown: 7F080500080200000040
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD860050F204104A00011010440001021057000101103B000103104700105B8D809E1B7D5AF2B391833B950A7DD41021000643656C656E6F10230006434C323430301024000232301042000531323334351054000800060050F204000110110012576972656C65737320415020434C32343030100800020000103C0001031049000600372A000120
Cell 03 - Address: 18:35:D1:27:CE:FF
Channel:44
Frequency:5.22 GHz (Channel 44)
Quality=44/70 Signal level=-66 dBm
Encryption key:on
ESSID:"Ziggo5072369"
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=0000005e12f11f09
Extra: Last beacon: 3368ms ago
IE: Unknown: 000C5A6967676F35303732333639
IE: Unknown: 01088C129824B048606C
IE: Unknown: 03012C
IE: Unknown: 073C4555202401172801172C01173001173401173801173C011740011764011E68011E6C011E70011E74011E78011E7C011E80011E84011E88011E8C011E
IE: Unknown: 460573D000000C
IE: Unknown: 2D1AEF091BFFFFFF0000000000000000000100000000000000000000
IE: Unknown: 3D162C050500000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F0805000F0200000040
IE: Unknown: BF0CB2018033EAFF0000EAFF0000
IE: Unknown: C005012A00FCFF
IE: Unknown: C30402D2D2D2
IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
IE: Unknown: DD0900037F01010000FF7F
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: DD9F0050F204104A0001101044000102103B000103104700105A1A5253659656489329A74B8B4A69671021001C41746865726F7320436F6D6D756E69636174696F6E732C20496E632E102300044150787810240008415078782D7878781042001253657269616C204E756D62657220486572651054000800060050F20400011011000941746865726F734150100800020104103C0001021049000600372A000120
Cell 04 - Address: E8:48:B8:76:E7:90
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=45/70 Signal level=-65 dBm
Encryption key:on
ESSID:"Donotpeek"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=000000350360840e
Extra: Last beacon: 68ms ago
IE: Unknown: 0009446F6E6F747065656B
IE: Unknown: 010882848B961224486C
IE: Unknown: 030101
IE: Unknown: 2A0104
IE: Unknown: 32040C183060
IE: WPA Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: 2D1AAD0117FFFFFF0000000000000000000000000000001804871100
IE: Unknown: 3D1601000400000000000000000000000000000000000000
IE: Unknown: 7F080000080000000000
IE: Unknown: 0B05020000127A
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: 46050200000000
IE: Unknown: 330E040102030405060708090A0B0C0D
IE: Unknown: 200103
IE: Unknown: 23023F00
IE: Unknown: 0706444520010D23
IE: Unknown: BF0CB179C233EAFF9204EAFF9204
IE: Unknown: C005000000EAFF
IE: Unknown: DD07000C430B000000
IE: Unknown: DD21000CE708000000BF0CB101C0332AFF92042AFF9204C0050000002AFFC303010202
IE: Unknown: DD1E001D0F100204000000000000000000000000000000000000000000000000
IE: Unknown: DD1E003192100204000000000000000000000000000000000000000000000000
Cell 05 - Address: 18:35:D1:27:CE:F9
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=50/70 Signal level=-60 dBm
Encryption key:on
ESSID:"Ziggo5072369"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=0000005e27af80fe
Extra: Last beacon: 68ms ago
IE: Unknown: 000C5A6967676F35303732333639
IE: Unknown: 010882848B968C129824
IE: Unknown: 030101
IE: Unknown: 0706455520010D14
IE: Unknown: 2A0100
IE: Unknown: 3204B048606C
IE: Unknown: 460573D000000C
IE: Unknown: 2D1AAD011BFFFF0000000000000000000001000000000406E6A70C00
IE: Unknown: 3D1601080400000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F0805000F0200000040
IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
IE: Unknown: DD0900037F01010000FF7F
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: DD9F0050F204104A0001101044000102103B000103104700105A1A5253659656489329A74B8B4A69671021001C41746865726F7320436F6D6D756E69636174696F6E732C20496E632E102300044150787810240008415078782D7878781042001253657269616C204E756D62657220486572651054000800060050F20400011011000941746865726F734150100800020104103C0001021049000600372A000120
Cell 06 - Address: F6:57:40:9A:1A:48
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=29/70 Signal level=-81 dBm
Encryption key:on
ESSID:"Ziggo"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=000000e842d48e13
Extra: Last beacon: 68ms ago
IE: Unknown: 00055A6967676F
IE: Unknown: 010882848B968C129824
IE: Unknown: 030101
IE: Unknown: 0706455520010D14
IE: Unknown: 2A0100
IE: Unknown: 3204B048606C
IE: Unknown: 2D1AAD011BFFFF0000000000000000000001000000000406E6A70C00
IE: Unknown: 3D1601080400000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F080500000200000040
IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
IE: Unknown: DD0900037F01010000FF7F
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : 802.1x
Cell 07 - Address: 2A:35:D1:27:CE:F9
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=50/70 Signal level=-60 dBm
Encryption key:on
ESSID:"Ziggo"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=0000005e27aec774
Extra: Last beacon: 68ms ago
IE: Unknown: 00055A6967676F
IE: Unknown: 010882848B968C129824
IE: Unknown: 030101
IE: Unknown: 0706455520010D14
IE: Unknown: 2A0100
IE: Unknown: 3204B048606C
IE: Unknown: 2D1AAD011BFFFF0000000000000000000001000000000406E6A70C00
IE: Unknown: 3D1601080400000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F080500000200000040
IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
IE: Unknown: DD0900037F01010000FF7F
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : 802.1x
Cell 08 - Address: F4:E3:FB:0B:1E:28
Channel:8
Frequency:2.447 GHz (Channel 8)
Quality=29/70 Signal level=-81 dBm
Encryption key:on
ESSID:"VFNL-0B1E21"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=000004cc9579718d
Extra: Last beacon: 5340ms ago
IE: Unknown: 000B56464E4C2D304231453231
IE: Unknown: 010882848B962430486C
IE: Unknown: 030108
IE: Unknown: 050400010000
IE: Unknown: 2A0104
IE: Unknown: 2F0104
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: 32040C121860
IE: Unknown: 2D1AAC181BFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D1608000400000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F080100000000000040
IE: Unknown: DD1000E0FC80000000230000000000000000
IE: Unknown: DD310050F204104A000110104400010210470010FEE92F84D03DC72AD390C7806836E245103C0001031049000600372A000120
IE: Unknown: DD090010180203000C0000
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
Cell 09 - Address: 90:5C:44:DA:33:57
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=23/70 Signal level=-87 dBm
Encryption key:on
ESSID:"ZiggoDF4EEFE"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000004011961d97
Extra: Last beacon: 68ms ago
IE: Unknown: 000C5A6967676F44463445454645
IE: Unknown: 010882848B961224486C
IE: Unknown: 03010B
IE: Unknown: 2A0104
IE: Unknown: 32040C183060
IE: Unknown: 0706455520010D14
IE: Unknown: 2D1AAC0117FFFF000000000000000000000000000000000000000000
IE: Unknown: 3D160B000400000000000000000000000000000000000000
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: 7F080100080000000000
IE: Unknown: 0B0501005B127A
IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
IE: Unknown: 46052200000000
IE: Unknown: DDA70050F204104A0001101044000102103B0001031047001088547A001DD211B286015543A04A64431021001852616C696E6B20546563686E6F6C6F67792C20436F72702E1023001C52616C696E6B20576972656C6573732041636365737320506F696E74102400065254323836301042000831323334353637381054000800060050F20400011011000952616C696E6B415053100800020000103C0001011049000600372A000120
IE: Unknown: DD07000C4300000000
Both Bands 2,4GHz and 5GHz use a set of "channels" to communicate with devices.
Your router is using channel 108 for 5GHz.
How to find supported wireless channels
As a reference, what are Wifi channels