Please Understand that Hak5, is just a marketing ploy, they can not answer actual technical questions right away, basicly there clown shoes. what you need to understand is pentoo is similar but not same as gentoo, if your doing SDR then download the Ubuntu 16.04 version just for SDR, , Don'y try and mess with pentoo, unless you know, then theres no reason to use it, just google Ubuntu GRC