CuriousMarc | Apollo Comms Part 10: Apollo SDR reboot and first voice transmission! @CuriousMarc | Uploaded 2 years ago | Updated 2 days ago
We use an SDR radio to talk to our Apollo transponder.

Apollo Comms Playlist: youtube.com/watch?v=v49ucdZcx9s&list=PL-_93BVApb58SXL-BCv4rVHL-8GuC2WGb

Balint and Austin ISEE-3 Reboot SDR presentation: youtube.com/watch?v=NTljlMH-0oM

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

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- Samtec: connectors: samtec.com

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00:00 Recap of previous episodes
00:59 Using SDR for recreating the Apollo ground station
01:53 What is a Software Defined Radio
04:29 Introducing the team that re-contacted a lost NASA spacecraft with SDR
08:41 Apollo SDR receiver using GNU radio
12:38 SDR receiver sees the Apollo signal
14:39 SDR transmitter locks the Apollo receiver
17:51 Transmitting voice down: subcarrier explanation
20:48 Programming and testing the SDR downvoice demodulator
21:58 Receiving voice from the Moon!