Apollo Comms - A Series on YouTube
I have not studied electronics but I have studied the Google IT support course among others so I have some basics of how computers and tech work. This type of documentary series is interesting because it brings history to life, and explains how things work. It is not sensationalist, does not use too much music and more. It just guides you through how technology works.
https://www.youtube.com/watch?v=v49ucdZcx9s
I was surprised to hear that transmission was as low as 2 watts and as high as just 11 watts. I also learned that for some communications they used just two watts of power for Apollo 13, 57 hours into the mission, to reduce power consumption. Of course on Earth they had a 270ft antenna to receive the signal. Compare this to a radio station that may use 50,000 watts. I don’t remember how many watts were used in satellite broadcasting but from a quick skim it’s about 20 watts but this goes to smaller and smaller dishes on earth. Starlink uses about 2 watts of power.