rtl-sdr from isv:perlur:epel project
Select Your Operating System
Add repository and install manually
For RHEL 7 run the following as root:
cd /etc/yum.repos.d/ wget https://download.opensuse.org/repositories/isv:perlur:epel/RHEL_7/isv:perlur:epel.repo yum install rtl-sdr