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Tutorials

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• Capacitive Reactance

  Hits: 53
• DC Circuit Theory

  Hits: 79
• AC Inductance and Inductive Reactance

  Hits: 150
• LC Oscillator Basics

  Hits: 74
• RC Charging Circuit

  Hits: 170
• Introduction to Capacitors

  Hits: 81
• The Inductor

  Hits: 170
• Operational Amplifier Basics

  Hits: 107
• Types of Resistor

  Hits: 125
• Semiconductor Basics

  Hits: 64
• Bipolar Transistor

  Hits: 74
• Radio Frequency - Technology and Design

  Hits: 54
• Spread Spectrum Tutorial

  Hits: 41
• Carrier Squelch

  Hits: 60
• CTCSS

  Hits: 76
• Selcall

  Hits: 100

  Selcall (selective calling) is a type of squelch protocol used in radio communications systems, in which transmissions include a brief burst of sequential audio tones. Receivers that are set to respond to the transmitted tone sequence will open their squelch, while others will remain muted.

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