Uploaded November 2025 | Updated September 2026, 1 week ago

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We try to make an Apollo talkback indicator work again, the ones that go either "grey" or "barber pole" on the control panel. Things don't quite go according to plan.

Links to schematics:
CSM 114 Systems Handbook: ibiblio.org/apollo/Documents/HSI-481260.pdf
CSM Functional Integrated Schematics Block II rev. K: ibiblio.org/apollo/Documents/CSM%20Functional%20Integrated%20System%20Schematics%20Block%20II%20Revision%20K.pdf

Links to more doc:
curiousmarc.com/space/apollo-s-band-communications
virtualagc.github.io/virtualagc/QuestForInfo.html
ibiblio.org/apollo

Elevator Music Credit: Crinoline Dreams by Kevin MacLeod

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- Support us on Patreon: patreon.com/curiousmarc
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