Show weak signals and what Is cause of trouble if the signals which are customarily loud front it a station tire are suddenly found to be quite weak the difficulty inay be caused by one or of the following the plate buttery battery may be exhausted the rhe phone jack way not be making good contact the liend hend phones may inny have become de magnetized the filament battery batters inny ina have leave become the station may inay have reduced its power the antenna may inny have become disconnected or the ground connections may have become ineffective due to existence of insulating paint or gaskets used in making pipe connections connection the crystal detector of the receiving set may have become dirty in the latter ease case the metal point touches the crystal may may be filed and the surface of the cary crystal witti bed with soap and water |