ChannelSPURIOUS EMISSIONS
Sheet 2 · All episodes

Episode 1 · AM · Series 02: RF principles

How does a voice ride on a radio wave?

A frame from the draft of episode 1, AM
Release
Length
21:13
Subject
Modulation

What it covers

How AM radio works, from sound to the receiver: the carrier, the envelope, the sidebands and splatter, with a real voice on a 1,000,000 hertz carrier. Every term is explained as it comes up.

Watch on YouTube

Operate it in the lab: Riding the Wave

Chapters

  1. 0:00Amplitude Modulation
  2. 0:29Jargon ahead
  3. 3:29From sound to audio
  4. 4:50Why not just send the audio?
  5. 6:20Putting the voice on the carrier
  6. 7:29The transmitter, step by step
  7. 10:22The view by frequency
  8. 12:39A real voice
  9. 13:16The receiver
  10. 16:31What AM wastes
  11. 17:32The jargon you learned

Frames from the draft

AM: Amplitude Modulation
01 Amplitude Modulation
AM: Jargon ahead
02 Jargon ahead
AM: From sound to audio
03 From sound to audio
AM: Why not just send the audio?
04 Why not just send the audio?
AM: Putting the voice on the carrier
05 Putting the voice on the carrier
AM: The transmitter, step by step
06 The transmitter, step by step
AM: The view by frequency
07 The view by frequency
AM: A real voice
08 A real voice
AM: The receiver
09 The receiver
AM: What AM wastes
10 What AM wastes
AM: The jargon you learned
11 The jargon you learned