H68K How can I use 2.4 and 5 GHz simultaneously?

I need 2.4 and 5 GHz WiFi for my home network. I bought the H68K with 4GB RAM and installed the OpenWrt software. How do I set up both networks under WLAN?

I have exactly the same problem. MediaTek MT7921 is dual-band hence presumably support multiple freq at once??
However when I add additional wireless network, it’s still being labeled as “radio0:…” causing the conflict with already existing wifi AP network.
So I think we would have to add new “wifi-device” as ‘radio1’. Which is not available according to output of lspci showing only one wi-fi device on one address.

The thing is that this device is “capable of being used as router/wifi AP” but not really tailored to be some super-duper wifi AP.

root@LinkStar:/# cat /etc/config/wireless
config wifi-device 'radio0'
        option type 'mac80211'
        option path '3c0000000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0'
        option mu_beamformer '0'
        option legacy_rates '0'
        option country 'US'
        option htmode 'HE80'
        option vendor_vht '1'
        option band '2g'
        option channel '6'
        option txpower '20'

config wifi-iface
        option device 'radio0'
        option mode 'ap'
        option ssid 'foobar'
        option encryption 'sae-mixed'
        option key 'foobar'
        option ifname 'wlan'
        option network 'lan'
root@LinkStar:/# lspci
0000:00:00.0 PCI bridge: Rockchip Electronics Co., Ltd RK3568 Remote Signal Processor (rev 01)
0000:01:00.0 Network controller: MEDIATEK Corp. MT7921 802.11ax PCI Express Wireless Network Adapter
0001:10:00.0 PCI bridge: Rockchip Electronics Co., Ltd RK3568 Remote Signal Processor (rev 01)
0001:11:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 05)
0002:20:00.0 PCI bridge: Rockchip Electronics Co., Ltd RK3568 Remote Signal Processor (rev 01)
0002:21:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 05)

Open a web browser and enter the router’s IP address in the address bar. The default IP address for OpenWrt is usually “192.168.1.1”, but it may vary depending on your specific configuration such as ffireapk. If you’re unsure, you can check the documentation or the label on the router for the correct IP address.

@Andreas_Reith and Bedas (I am new so can’t tag more than two persons), I am struggling with the same problem. @Tobias, I am not sure how your post even begins to address the issue. Please clarify.

Is there a way to tag Seeed Studio support so they see this post and respond?