A method for maintaining satellite diversity for a WiMAX system comprising: A. The fiber laser structure includes a core, an inner cladding, and an outer cladding. The content may be considered previously played if the playback time exceeded a wait time. Instead, backup batteries having sufficient electric power stored therein are provided for replacement to provide electric power for further driving. The pacemaker accesses the programming parameters stored therein corresponding to the programming state identified by the new pointer and is reprogrammed.