They can power down specific instruments to stay within the decaying threshold. Wikipedia has this timeline of instrument power-downs: http://en.wikipedia.org/w

They can power down specific instruments to stay within the decaying threshold. Wikipedia has this timeline of instrument power-downs: http://en.wikipedia.org/wiki/Voyager_1#Interstellar_mission http://en.wikipedia.org/wiki/Voyager_1#Interstellar_mission