Apollo Comms Part 19: Pre-Modulation Processor Grand Explanation

In preparation for powering up the Apollo Pre-Modulation Processor or PMP, we need look in detail at its functions and operation. The Collins PMP is the heart of the communication system. And boy, it sure is complicated! Hi-res colored schematics to follow along: https://www.curiousmarc.com/space/apollo-s-band-communications#h.c6wnrxe9yquc Ken's blog article about the PMP: https://www.righto.com/2022/07/reverse-engineering-apollo-spacecrafts.html Apollo Comms Playlist: https://www.youtube.com/watch?v=v49ucdZcx9s&list=PL-_93BVApb58SXL-BCv4rVHL-8GuC2WGb Links to doc: https://www.curiousmarc.com/space/apollo-s-band-communications https://virtualagc.github.io/virtualagc/QuestForInfo.html https://www.ibiblio.org/apollo/ Our sponsors - PCBWay: fast turn PCBs, https://www.pcbway.com - El ...