I am new to OpenWRT and networking. I am working on a router using a Raspberry PI 4B, I am able to connect over WIFI to my home network, and am also able to connect to the internet, but only on 2.4GHz band, when I switch to 5GHz band the network disables itself. I have 2 different USB WIFI antennas that I am working with, and neither will work with 5GHz band.
The first is a Panda Wireless PAU0B and I have installed the kmod-mt76x0u driver.
The second is a RT5370 and the following Ralink drivers are installed:
kmod-rt2800-lib
kmod-rt2800-usb
kmod-rt2x00-lib
kmod-rt2x00-usb
rt2800-usb-firmware
The software is at 25.12.2
I'm not sure what other info would be needed so please let me know what else to post.
rt2800usb (my own specimen died years ago) is not really capable of AP mode, I'm not sure if the driver outright rejects it (the features and interface combinations of iw list will tell you), but the hardware/ firmware does lack necessary features to support it (that doesn't necessarily mean that it doesn't work at all, but it will never be 'production ready', as it will utterly fail with powersaving clients, the max. number of connected STAs and a number of other required features). 15 years ago, it was an okay'ish chipset for client (STA) usage, but I wonder why it so persistently comes up in question about OpenWrt (again and again)…
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especially considering that actually usable, for limited use/ small numbers of clients, mt7921au based chipsets sell for under 10 bucks delivered.