Snapshots/targets/brcm47xx/mips74k/packages

https://downloads.openwrt.org/snapshots/targets/brcm47xx/mips74k/packages/
No packages kmod-rt... and others (ex. kmod-rt2800-usb). Long absent.
Why :question:

https://downloads.openwrt.org/releases/18.06-SNAPSHOT/targets/brcm47xx/mips74k/packages/
here they are available