Communications (CS)


Communications (Ascent Stage)


The Communications Subsystem is made up of redundant S-band transceivers and power amplifiers, redundant VHF transceivers, and signal processing equipment with associated antenna systems. These equipments provide the following capabilities: 
  • S-band for transmission of PCM telemetry, TV, voice, emergency key and range data between LM and earth; 
  • VHF for linking LM and Command Module, and the LM and astronaut on the lunar surface; 
  • VHF telemetry capability from LM to Command Module on the far side of the moon; 
  • EVA (Extravehicular Astronaut) link to earth via VHF/Sband relay. 

Communications  (Descent Stage)