Chapter 6: Processing Signals

What is the name of a circuit that generates a signal at a specific frequency?

• Reactance modulator

• Phase modulator

• Low-pass filter

• Oscillator

Which of the following is used to convert a signal from one frequency to another?

• Phase splitter

• Mixer

• Inverter

• Amplifier

Tags

NGSS.HS-PS4-5

What device converts the RF input and output of a transceiver to another band?

• High-pass filter

• Low-pass filter

• Transverter

• Phase converter

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

NGSS.HS-PS4-5

Which term describes the ability of a receiver to detect the presence of a signal?

• Linearity

• Sensitivity

• Selectivity

• Total Harmonic Distortion

Tags

NGSS.HS-PS4-5

Which of the following describes combining speech with an RF carrier signal?

• Impedance matching

• Oscillation

• Modulation

• Low-pass filtering

Tags

NGSS.HS-PS4-5

Where is an RF preamplifier installed?

• Between the antenna and receiver

• At the output of the transmitter power amplifier

• Between the transmitter and the antenna tuner

• At the output of the receiver audio amplifier

Which of the following is a form of amplitude modulation?

• Spread spectrum

• Packet radio

• Single sideband

• Phase shift keying (PSK)

Which of the following types of signal has the narrowest bandwidth?

• FM voice

• SSB voice

• CW

• Slow-scan TV

What is the approximate bandwidth required to transmit a CW signal?

• 2.4 kHz

• 150 Hz

• 1000 Hz

• 15 kHz

Tags

NGSS.HS-PS4-1

Which of the following controls could be used if the voice pitch of a single-sideband signal returning to your CQ call seems too high or low?

• The AGC or limiter

• The bandwidth selection

• The tone squelch

• The RIT or Clarifier

Tags

NGSS.HS-PS4-5