Methods, devices and computer program products are provided to improve uplink communications in a wireless communication system. At the lower frequencies the ferrite material introduces a minimal loss of 2 to 3 dB, whereas at the higher frequency range very little current passes through the meander line thus eliminating any effect of the ferrite on antenna performance. The media is transported from the supply vessel to the pressurized gas stream as the rotor spins. Additionally or alternatively, the administration server adds tasks by the plug-ins to a job created by the plug-ins with the tasks performing the assigning; and removes tasks from the job to optimize it. When the jarring operation is finished, the dart valve assembly can be released from the body assembly and retrieved, with a wireline or coiled tubing unit. The conveyor has one end configured to extend into a pet litter container of the self-cleaning litter box and an opposite exit end.