Transcription: The most important aspect of any lunar mission is communicating with mission control. Unfortunately, due to great distances, solar interference and poor transmission quality, it is sometimes difficult to understand mission control. The first aspect of radio communications is tuning the primary and secondary frequencies. Most of the time, mission control resides on the primary frequency. During pre-launch, the ground controllers reside on the secondary channel. During lunar orbit, the command module will also be on the secondary frequency. It is imperative that the crew listens carefully to mis ...
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