Raspberry pi 4 can't find 5ghz wifi

Firstly, you must have a 2.4G/5G dual band routers.

1. Make sure you have set the correct country code using raspi configuration.

sudo raspi-config

select 'Localisation Options' and press 'ENTER'

select 'L4' and press 'ENTER'

select the correct country then press 'ENTER'

2. Use the 'iwlist channel' command to view the currently allowed frequency bands to be connected. These values are different for different countries.

iwlist channel

3. Check the frequency band settings of your router 5G WIFI

For this router, only '149,153,157 or 161' channel can be selected if we want to use 5G WIFI, or can't find 5G wifi in Pi 4 SSID list.

4. Then you can find the 5G wifi on your raspberry pi SSID list

TAG： ESP32 MLX90640 X1015 Raspberry Pi 5 PCIe to M.2 Key-M NVMe SSD Board Pi5 2280 Raspberry Pi 11.6 inch LCD HDMI /Type C Display In-Cell Capacitive TouchScreen 1768x828 For Jetson Nano/mini Computer PC Modbus RTU Relay 32CH ESP32-C3FN4 USB Monitor Raspberry Pi 3.5 inch e-Paper link (G) RYBW 384x184 For Arduino / Jetson Nano / STM32 ESP32 ST7789 tutorial Raspberry Pi 5 SpotPear Raspberry Pi 5 PCIe TO Gigabit RJ45 ETH Adapter Board (C) Driver-Free RTL8111H For Pi5 Information UNO Minima RA4M1 ZERO Tiny SuperMini R7FA4M1 Board Compatible With R4 For Arduino Core3566002032 Raspberry Pi Pico RP2040 C Environment Window Mechanical Keyboard ESP32 S3 2.1 inch Round LCD Development Board 480x480 TouchScreen Display LVGL HMI With QMI8658C 6-Axis Sensor SpotPear Spotpear DDSM115 Direct Drive Servo Motor All-In-One Design Hub RS485 Motor

Raspberry Pi 4B Storage module NASPi adapter board SATA HDD/SSD hard disk NAS storage server kit

TAG： RDK X5 PoE USB TO RS485 Raspberry Pi 3.7 inch e-Paper link (G) RYBW 416x240 For Arduino / Jetson Nano / STM32 Pi 5 PCIe to M.2 Industrial Modbus RTU Dual Ethernet RJ45 To 8ch POE ETH Relay (C) PoE Power over Ethernet EyeLink-RC-S1 Industrial Edition FPV Drone ground station image transmission remote control ESP32 S3 Board FT2232HL USB RS485 Industrial Grade Isolated Converter UART 2CH X1301 Raspberry Pi 5 HDMI to CSI-2 Raspberry Pi MLX90640 Raspberry Pi 5 IR Camera Spotpear 10.1 inch LCD DSI MIPI TouchScreen Display 1280x800 ESP32 P4 Luckfox Titan RK3576 Lyra RK3506 Raspberry Pi 15.6 inch FHD Monitor LCD Capacitive TouchScreen Display Type-C HDMI Computer PC Raspberry Pi USB Power Splitter UGV Rover PT Kit AI OpenCV Robot Car MediaPipe For Jetson Orin VisionFive2 case SIM8202G M2 3G 4G 5G GNSS Sub-6G PCIe USB3.1 GPIO M.2 LTE-A NSA SA DFOTA VoLTE SIMCOM Digital Photo Frames PC USB Monitor Screen