However, all work done on both will be made available to the public, but only one version will be actively supported. Hence, we will continue to use the 2.2 branch, and are currently using kernel 2.2.16. When 2.4 becomes stable enough, a new version of radiolinux will come out with that branch. Some knowledge of electronics and radio would also be handy. The author of this document and the guerrilla.net project do not promise any support.
Many more drivers are in some stage of development.