What makes a Digital Coded Squelch work?

What makes a Digital Coded Squelch work?

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What makes a Digital Coded Squelch work?

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What makes a Digital Coded Squelch work?

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🔍 Key Concepts

• Digital Selective Calling (DSC) and how it uses signaling on VHF radios • Difference between analog squelch (noise-based) and coded squelch systems • How selective calling lets only certain receivers open their audio

💭 Think About

• Think about what has to be added to a radio signal so that only certain radios will open their squelch and others will stay muted. • Compare how a basic squelch control works (just quieting background noise) versus a system that lets a group of radios talk privately. • Which option describes something that can be recognized and matched by the receiving radio’s circuitry or processor?

✅ Before You Answer

• Verify which option would allow a radio to identify a particular group or individual before opening squelch. • Eliminate any options that describe conditions common to all radio signals, not just special group calling features. • Check which choice best matches the idea of a selective, programmable filter in the receiver.

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