CuriousMarc | Apollo Comms Part 6: First tone transmission, to the Moon and back! @CuriousMarc | Uploaded 2 years ago | Updated 2 days ago
We demonstrate a locked bidirectional link between Earth and our Apollo transponder.

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

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

Our sponsors
- PCBWay: fast turn PCBs, pcbway.com
- Keysight: test instruments: keysight.com
- Samtec: connectors: samtec.com

Support the team on Patreon: patreon.com/curiousmarc
Buy shirts on Teespring: teespring.com/stores/curiousmarcs-store
Learn more on the companion site: curiousmarc.com
Contact info: youtube.com/curiousmarc/about

00:00 Recap of previous episodes
01:28 Transponder locking explanation
02:11 Original acquisition procedure document
03:10 Ground transmitter and Apollo receiver setup
04:21 Power up and first locking attempt
05:28 Successful lock of PM1 and PM2
07:39 Completing the transponder hookup
08:59 Astronaut panel receive indicator
11:06 Improvised Apollo receiver with ham radio
14:17 FM tone from the Moon
16:12 Setting up for PM reception
19:42 Earth-Moon roundtrip PM tone
22:38 Playing with our Apollo equipment