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Technician: PSK

What does the abbreviation "PSK" mean? A. Pulse Shift Keying B.…

Amateur Extra: Crystal Oscillator Frequency

Which of the following must be done to insure that a crystal…

General: Peak Envelope Power (PEP) Output

What is the output PEP from a transmitter if an oscilloscope…
Series Circuit

Technician: Circuit Types

In which type of circuit is current the same through all components? A.…
Sporadic E Propagation

Amateur Extra: Sporadic E Propagation

At what time of year is Sporadic E propagation most likely to…

General: LSB Frequency Range

What frequency range is occupied by a 3 kHz LSB signal when the…

Technician: Coax Lightning Protection

Which of these precautions should be taken when installing devices…

Amateur Extra: Gray Code

What is an advantage of Gray code in digital communications where…

General: Class A Amplifier

Which of the following is a characteristic of a Class A amplifier? A.…