Broncolor RFS2.1 ReceiverBroncolor RFS2. 1 Receiver The Broncolor RFS 2 Receiver is an ideal way to eliminate PC cords while adding wireless functionality to your studio or work in the field. The receiver connects to Broncolor or other brand packs or heads using the supplied sync cord and optional adapter if needed. The RFS 2 has 40 discrete channels to choose from; more than enough to eliminate interference or overlap in multi photographer events. 99 studio addresses are