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On today\\u2019s 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.\\xa0

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 \\u2013 point to poing
    • Radio 1 Tx\\u2019s on one freq where Radio 2 Rx\\u2019s
    • Radio 1 Rx\\u2019s where Radio 2 Tx\\u2019s
  • 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 \\u201con demand\\u201d
  • 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

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\\U0001f399 Join our new Scanner Radio Community

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Join our FREE Discord server and connect with other Scanner Radio Users!

By using Discord, a free, multi-platform community portal, you can now be part of the Scanner Radio Discussion!

Chat real time, share photos, ask questions, and give feedback to other\'s in chat.

\\U0001f517 https://www.scannerschool.com/discord

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\\U0001f393 Check out our online courses

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Our free Software Defined Radio course will have you up and running with a SDR in a weekend.

Upgrade to our Advanced Course, and learn how to setup SDR Software like a pro.

\\U0001f517 https://www.courses.scannerschool.com

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\\u26a0\\ufe0f I want to answer your questions

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I am always looking to answer your scanner radio question.

If you have a question you\'d like answered, please leave me a voicemail with your question:

\\U0001f4de 516-308-2885

\\U0001f517 https://www.scannerschool.com/ask

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All session notes with links to the items we talked about can be found on our website at\\xa0

https://www.scannerschool.com/session212

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