2022 Scanner Crash Course

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On today’s episode, I will go through my slides on my presentation for Ham Radio University, which I normally do every year.

This is my practice run for the presentation that I gave at HRU on January 8, 2022.

If HRU publishes the presentation, we will follow up with a link.

This presentation is for those who are new to the scanner radio hobby, or need a quick reset and want to have a bit of a refresher on some scanner radio topics and terms.

If you need more help with your scanner, you can book me for a 1 hour tutoring session at www.scannerschool.com/tutoring




What You Need To Know

  • We use scanners instead of two way radios for scanning because:
    • Scanners typically have a much faster scan rate
    • Have better memory management
    • Scanners have a larger frequency range than most two way radios
    • Scanners can typically support multiple modes and technologies
  • There are three main types of transmitting and receiving:
    • Simplex: Single Frequency – point to point
      • Mostly used on Fireground and tactical channels
    • Duplex: Two Frequencies – point to poing
      • Radio 1 Tx’s on one freq where Radio 2 Rx’s
      • Radio 1 Rx’s where Radio 2 Tx’s
    • Repeaters: Two Frequencies
      • All radios Tx on the repeater input frequency
      • All radio Rx on the repeater output frequency
      • Gives a large footprint on radio communication
      • Mostly used on dispatch frequencies
    • Analog is the most common transmission type that we could use
      • Used by Aviation, Ham, Rails, Marine, etc
    • Digital has better spectrum usage
    • Typical Digital Modes in scanning are:
      • P25
      • DMR
      • NXDN
      • (TETRA is used Outside the US. No Scanner can Rx TETRA)
    • Trunking Improves Spectrum Efficiency
    • Common Trunk Systems are:
      • Motorola Type II
      • EDACS
      • LTR
      • P25
      • DMR
      • NXDN
    • Many users can be on a trunk system and voice channels are distributed “on demand”
    • If a group is not talking, they do not tie up a voice path
    • All users listen for commands on a control channel and only move to a voice channel when told to by the control channel


Are you looking for your first scanner radio?

Download our new e-guide, “5 Thinks You Need to Know Before Buying Your First Scanner”.   This free PDF is about 30 pages long and has 5 things you should look for, plus a few extra bonus items to make sure you make an educated purchase.

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