Electron multipliers, radiation detectors, and methods of making the multipliers and detectors are described. The lattice includes a plurality of data fields each adapted to hold data representing a word element of the entry. At a receiver of the CATV network there is provided a buffer memory for storing the transmitted video program segments for subsequent playback whereby, in use, the scheduling algorithm can ensure that a user’s receiver will receive all of the program segments in a manner that will enable continuous playback in real time of the program. The method further includes forming a source contact on an exposed portion of a first fin structure. This makes it clear that the skill field being important for the client company but insufficient in the skill holding amount.