MaskSet Radio Register 0xD2 with mask 0xFC and set with buf[0]
MaskSet Radio Register 0x76 with mask 0xFC and set with buf[1]
MaskSet Radio Register 0xDE with mask 0xFC and set with buf[2 * core]
MaskSet Radio Register 0xA5 with mask 0xFC and set with buf[2 * core + 1]
MaskSet Radio Register 0x76 with mask 0xF3 and set with buf[0] << 2
MaskSet Radio Register 0xA5 with mask 0xF3 and set with buf[2 * core + 1] << 2