# Apollo Spacecraft S Band Communication System, Part 15

**URL:** <https://scanalyst.fourmilab.ch/t/apollo-spacecraft-s-band-communication-system-part-15/1114>\
**Category:** Continuity\
**Tags:** microwaves, apollo, communication, space\
**Created:** [29 March 2022 12:18 UTC](https://scanalyst.fourmilab.ch/t/apollo-spacecraft-s-band-communication-system-part-15/1114 "2022-03-29T12:18:52Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![johnwalker](https://scanalyst.fourmilab.ch/user_avatar/scanalyst.fourmilab.ch/johnwalker/32/17415_2.png) [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Post date:** [29 March 2022 12:18 UTC](https://scanalyst.fourmilab.ch/t/apollo-spacecraft-s-band-communication-system-part-15/1114/1 "2022-03-29T12:18:52Z")

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[![](https://scanalyst.fourmilab.ch/uploads/default/original/2X/d/d4b1ce99842c53948e31ca1a29455136e56cbebc.jpeg "Apollo Comms Part 15: Combining Voice, Data and Ranging") ](https://www.youtube.com/watch?v=ztnct4r-U1w)

Finally, all the pieces are in place to demonstrate how the Apollo communication system multiplexed voice, data, and spacecraft ranging information, each using a different form of modulation, onto a single microwave channel without interference among the signals.