ChannelSPURIOUS EMISSIONS

Sheet 2 · The episodes

All Episodes

Every episode on the channel. Some belong to a series, others stand alone.

  1. 00Listening Station - Series IntroWhat is a listening station, and what can one hear?Series 01 · The Listening Station · All of it2:19
  2. 01ADS-BHow do I see aircraft?Series 01 · The Listening Station · 1090 MHz3:09
  3. 02Planefence and Plane-AlertHow does it tell me about an unusual aircraft?Series 01 · The Listening Station · 1090 MHz6:06
  4. 03AISHow do I see ships?Series 01 · The Listening Station · 162 MHz5:29
  5. 01AMHow does a voice ride on a radio wave?Series 02 · RF principles · Modulation21:13
  6. 04ACARS and VDL2What do aircraft say, not only where they are?Series 01 · The Listening Station · 131 and 136 MHz3:39
  7. 02SSBWhat is left when AM drops the carrier and one sideband?Series 02 · RF principles · Modulation3:38
  8. 05ShortwaveHow does one box hear 0 to 30 MHz at once?Series 01 · The Listening Station · 0 to 30 MHz4:53
  9. 03FMWhy does FM sound clean?Series 02 · RF principles · Modulation3:37
  10. 06HFDLHow do aircraft talk over oceans?Series 01 · The Listening Station · 2.8 to 22 MHz3:19
  11. 04FM Stereo and the Capture EffectHow do two channels fit in one signal, and why does the stronger station win?Series 02 · RF principles · Modulation3:47
  12. 07WSPR and FT8How far does a whisper travel?Series 01 · The Listening Station · 14 MHz and more3:02
  13. 05The Superheterodyne ReceiverHow does one fixed filter serve every station?Series 02 · RF principles · Receivers2:49
  14. 08Weather FaxHow does a ship get a weather map with no internet?Series 01 · The Listening Station · 518 kHz, 4 to 22 MHz3:03
  15. 06DecibelsWhat is a decibel, and why do decibels add?Series 02 · RF principles · Measurement2:48
  16. 09Distress Calls, Beacons, and HFGCSWhat else is out there? Distress calls, beacons, military voices.Series 01 · The Listening Station · 2 to 28 MHz4:26
  17. 07Sampling and AliasingHow many samples are enough?Series 02 · RF principles · Sampling2:36
  18. 10VLF and Solar FlaresHow does a very low frequency signal show a solar flare?Series 01 · The Listening Station · near 25 kHz3:12
  19. 08I/Q SignalsWhy does a software radio keep two numbers for each sample?Series 02 · RF principles · Sampling3:22
  20. 11Antennas and filtersWhat is on the roof, and what did I get wrong?Series 01 · The Listening Station · The roof3:29
  21. 09Filters and BandwidthWhat does a sharp filter cost?Series 02 · RF principles · Filters2:40
  22. 12The Station MonitorHow do I watch everything on one screen?Series 01 · The Listening Station · The wall3:33
  23. 13Numbers StationsWho broadcasts numbers on shortwave, and what reaches my station?Series 01 · The Listening Station · Coming soonShortwave, by timetable10:52
  24. 14RadiosondesWhat does a weather balloon feel on the way up?Series 01 · The Listening Station · Coming soon400 to 406 MHz6:30
SpurToday every episode belongs to one of 2 series, and each series counts its own episodes from the start. The Series sheet shows them, and what comes next.