SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/aero-passive-communications-satellite

How does a passive communications satellite relay radio?

It reflects the signal without amplifying it.

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  1. It creates a new message
  2. It amplifies the signal
  3. It acts like a radio mirror ✔

Why: A passive satellite does not use a powered repeater. It simply reflects incoming radio energy, much like a mirror redirects light.

Huh, didn't know that: NASA's Echo satellites were giant reflective balloons.

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The passive satellite reflected on everything it heard.
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References

Answer: It acts like a radio mirror. A passive satellite does not use a powered repeater. It simply reflects incoming radio energy, much like a mirror redirects light.

  1. Journey of Flight Teacher's Guide www.gocivilairpatrol.com/media/cms/2nd_edition_Teachers_Guide_5D3166D76F9B1.pdf
    Echo 1 was a large reflective balloon placed in orbit in 1960.
    Checked 2026-10-10.

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