The RLO 052 Redundant Local Oscillator is the main reference signal source for the Q-Stack® 2 Frequency Stacking System. It typically resides in a headend or hub site. The unit features two outputs that allow the reference signal to be independently transmitted downstream and upstream over the existing HFC network. All of the FSU UpConverters in the HFC nodes and FSD DownConverters associated with the same headend or hub site should use only one RLO 052. External status and control connections allow the unit to be easily integrated with existing status monitoring systems.