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Tutorials

• Hits: 35
  Capacitive Reactance
• Hits: 59
  DC Circuit Theory
• Hits: 109
  AC Inductance and Inductive Reactance
• Hits: 57
  LC Oscillator Basics
• Hits: 119
  RC Charging Circuit
• Hits: 63
  Introduction to Capacitors
• Hits: 126
  The Inductor
• Hits: 89
  Operational Amplifier Basics
• Hits: 97
  Types of Resistor
• Hits: 48
  Semiconductor Basics
• Hits: 55
  Bipolar Transistor
• Hits: 50
  HF Technology
• Hits: 67
  VHF/UHF Technology
• Hits: 33
  Radio Frequency - Technology and Design
• Hits: 21
  Spread Spectrum Tutorial
• Hits: 42
  Carrier Squelch
• Hits: 56
  CTCSS
• Hits: 91
  Digital-Coded Squelch
• Hits: 57
  Reverse Burst
• Hits: 80
  Selcall

  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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