Follow Apollo 11 as it happened

This is great.
I use to listen to the audio tracks on the Apollo Lunar Flight Journal on headphones, kids would be asking what music I'm listening to.

NASA used a series or radio telescopes dotted around the word to send radio signals to the command module and the LM. The beep noised you often hear are called Quindar tones, this was to alert or prepare the radio transmitters that a signal on the the old phone PBX system was coming through to be transmitted to the astronauts as a radio signal.