U.S. Naval Cryptologic Veterans Association

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Tutorials

Hits: 47
Capacitive Reactance
Hits: 71
DC Circuit Theory
Hits: 145
AC Inductance and Inductive Reactance
Hits: 68
LC Oscillator Basics
Hits: 165
RC Charging Circuit
Hits: 75
Introduction to Capacitors
Hits: 163
The Inductor
Hits: 103
Operational Amplifier Basics
Hits: 119
Types of Resistor
Hits: 59
Semiconductor Basics
Hits: 68
Bipolar Transistor
Hits: 46
Radio Frequency - Technology and Design
Hits: 34
Spread Spectrum Tutorial
Hits: 55
Carrier Squelch
Hits: 70
CTCSS
Hits: 93
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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