ChannelSPURIOUS EMISSIONS
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Episode 4 · FM Stereo and the Capture Effect · Series 02: RF principles

How do two channels fit in one signal, and why does the stronger station win?

A frame from the draft of episode 4, FM Stereo and the Capture EffectComing soon
Release
Length
3:47
Subject
Modulation

What it covers

How FM stereo works: the sum, the difference and the pilot tone. Then the capture effect: why the stronger of two FM signals takes all. With real voices through a real stereo receiver.

Chapters

  1. 0:00FM, in one picture
  2. 0:13Two channels in one signal
  3. 0:37Where does the difference go?
  4. 1:08How does the receiver separate them?
  5. 1:37What does stereo cost?
  6. 1:56A real stereo signal
  7. 2:27Two stations on one frequency
  8. 2:55Why does the stronger signal win?
  9. 3:14Two real voices on one frequency
  10. 3:37FM stereo and the capture effect

Frames from the draft

FM Stereo and the Capture Effect: FM, in one picture
01 FM, in one picture
FM Stereo and the Capture Effect: Two channels in one signal
02 Two channels in one signal
FM Stereo and the Capture Effect: Where does the difference go?
03 Where does the difference go?
FM Stereo and the Capture Effect: How does the receiver separate them?
04 How does the receiver separate them?
FM Stereo and the Capture Effect: What does stereo cost?
05 What does stereo cost?
FM Stereo and the Capture Effect: A real stereo signal
06 A real stereo signal
FM Stereo and the Capture Effect: Two stations on one frequency
07 Two stations on one frequency
FM Stereo and the Capture Effect: Why does the stronger signal win?
08 Why does the stronger signal win?
FM Stereo and the Capture Effect: Two real voices on one frequency
09 Two real voices on one frequency
FM Stereo and the Capture Effect: FM stereo and the capture effect
10 FM stereo and the capture effect