I have a Mini 1st Gen, BOLT 500 GB, BOLT 1TB, Premiere 2-Tuner, and two Roamio Pros. And two VOX Remotes. I cannot get the VOX Remotes to work in RF Mode with ANY of them ! I can get standard Roamio Remotes to do so. So I plugged a VOX Dongle into a Roamio, and the VOX Remote paired via RF instantly. SO - to pair in RF Mode, does a VOX Remote require a Dongle or a VOX box ?