PowerBox Core Radio System Tray Version Black With PBR-9D ReceiverPowerBox Core Radio System Tray Version 8106 Black With PBR 9D Receiver PowerBox Systems manufactures high quality RC power distribution equipment, and has now been working for more than two years on its own independent radio control system, The Core. On the face of it they may seem a little tardy in introducing a new 2. 4 GHz RC system, but upon closer inspection it is precisely this belated entry which gives them one unique advantage: During the