I enjoy the kwifimanager tool. It is probably quite power-hungry. But it does enable powermanagement of the NIC. I used the command
apt-get install kdenetwork-extras
as root to get the Kwifimanager tool. It’s very good.
I also installed APT by using the command
yum install apt –disablerepo=development
because I didn’t want YUM to look at the development repos from Fedora.