Map the radio spectrum, identify radio services, and explain the basics of radio and radio communication types.
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Checklist
2a(1-3) Draw and label the spectrum and locate at least eight radio servicesNot complete
2b(1-3) Discuss the definition of radio and compare broadcast, two-way, commercial, and hobby radioNot complete
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.
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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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