An electrodeless high pressure discharge lamp is described. The target pilot SNR threshold is controlled by considering the pilot signal strength of the serving Node-B andor the uplink channel condition of the serving Node-B when deciding to increase or decrease the target pilot SNR threshold of Nodes-B. A controller is provided for averaging a predetermined number of provided signals and sending the averaged signal to the motor at a second predetermined time interval for modulating operating speed of the motor. In a preferred embodiment, the accelerator composition comprises zinc diethyldithiocarbamate, zinc 2-mercaptobenzothiazole and diphenyl guanidine, in conjunction with a stabilizer, such as sodium caseinate. Embodiments of the invention include use of the aerobic digestion system prior to anaerobic digestion.