Requirement 2 of 9

Radio Fundamentals

Map the radio spectrum, identify radio services, and explain the basics of radio and radio communication types.

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Checklist

Electromagnetic spectrum chart

Create a spectrum chart from 300 kHz to 3,000 MHz and label the required sections and services.

What to include

  • Mark the MF, HF, VHF, UHF, and microwave portions.
  • Place at least eight services on the chart, such as AM, FM, TV, CB, amateur radio bands, public safety, cellular, Wi-Fi, and Bluetooth.
  • Use a scale that makes it easy to see how services are spread across the spectrum.

Electromagnetic spectrum chart locked

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Radio definitions and comparisons

Discuss what radio is and compare broadcast radio with two-way radio and commercial broadcast with hobby radio.

Core ideas

  • Radio uses electromagnetic waves to send information without wires.
  • Broadcast radio mainly sends information one-way to many listeners.
  • Two-way radio lets users both transmit and receive.
  • Commercial broadcast radio is usually run for public programming and business purposes, while hobby radio is often focused on experimentation, communication practice, or personal interest.

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