The invention relates to a method for determining connection quality, and a receiver in a radio system, the receiver comprising means for decoding a received signal by the Viterbi method by means of a trellis diagram comprising a group of state points, and means for calculating state transition values for the two possible transitions in each point of the diagram. The coating systems include inner and outer ceramic layers, each having a microstructure characterized by splats and horizontal porosity. A pair of fasteners, one for each elongated support arm, secures the lower side of each elongated support arm to the upper side of the base member at the respective opposed ends of the base member. A representation of a hardware design for the processor extension comprising the instruction format and the computation element is generated. In one implementation, the energy source monitoring system detects when voltages in the energy source have fallen below a cutoff level, yet allows the device to continue running until the operator finishes the current device operation. A clutch mechanism is disposed between the drive wheel and a drive shaft and is actuated by driving in rotation the drive wheel and deactuated by driving in rotation the drive shaft when the motor input shaft is stopped or when the speed of rotation of the drive shaft is greater than the speed of rotation of the drive wheel.