SBE Radio Operators Practice Exam

These questions are part of the practice quiz. Start practicing

• What is the maximum permissible modulation for an FM station?
• What is the industry term for an input channel volume control on an audio mixing device?
• Is every radio station in the United States required to have an EAS encoder/decoder?
• What is another name for a transmitter's RF output?
• What is the main function of an RF amplifier?
• Which describes the proper procedure for turning on a tube-type transmitter?
• What is a recommended practice to avoid frequency drift in radio equipment?
• What does the term 'bandwidth' refer to in radio transmissions?
• What are the numbers on a meter called?
• What are the maximum modulation limits for an AM station?
• Which of the following is a definition of audio distortion?
• What factor influences the selection of an antenna for a specific frequency?
• Which of the following helps ensure the longevity of radio transmission equipment?
• Who directly oversees the program content of a radio station?
• What kind of antenna is typically used for UHF band transmissions?
• What is the effect of improper signal polarization on communication?
• What happens to the Standing Wave Ratio (SWR) when ice accumulates on the antennas?
• What is the generic name of the device that is used with a special, digital phone line to transmit high-quality stereo audio?
• What kind of audio mix is provided back to a telephone caller?
• What is the significance of the station's frequency?
• What is the typical modulation depth for AM broadcasting?
• What is the primary purpose of a cue channel in an audio mixing device?
• What is the purpose of an Automatic Transmitter System (ATS)?
• What is the instantaneous maximum audio level being processed at a given time called?
• In an HD Radio System, what is the role of the Exporter?
• FM radio stations are permitted to broadcast how many hours each day?
• Which of the following is typically a duty of the program director?
• In a program automation system, what is the name of the mode where an announcer starts program segments and talks between them?
• Why is peak level monitoring important in audio production?
• In an audio mixing console, what is the function of the channel assign switch?
• What is the typical use of a spectrum analyzer in radio operations?
• What does the term ducking mean in audio processing?
• What is the difference between analog and digital signals?
• What is the purpose of using a directional antenna?
• What is the maximum permissible power for a local channel class C AM radio station?
• How does the Doppler effect influence radio signal transmission?
• What is the typical frequency range for FM broadcasting?
• What is the function of a mixer in a radio transmitter?
• A microphone with a single opening at its top end and openings below that opening is most likely what type of microphone?
• What component is critical for resolving technical issues before they affect broadcasting?
• What is one important safety precaution when operating high-power transmission equipment?
• What does "QRM" refer to in radio communication?
• What is the name of the signal that contains the stereo audio and the 19kHz stereo pilot tone?
• A microphone that can pick up a broad acoustic range from high to low is said to have a good ________.
• What is one key benefit of using digital signals over analog signals?
• Which of the following best describes the purpose of a transmitter in a radio system?
• What is the main function of an antenna in radio communication?
• Who is responsible for maintaining the transmitter in a radio station?
• What is the primary function of a transmitter?
• What is the purpose of an antenna in a radio system?
• What is the name of the center-most flashing light on a tower?
• What happens to the signal if the transmitter is misaligned?
• What is one function of a modulator in a radio transmitter?
• Define "terrestrial broadcasting."
• What is the typical frequency range for shortwave radio?
• What is typically monitored through the cue channel of a mixer?
• What are the required elements of a station identification?
• When using a two-way radio system, what is the role of the receiver?
• What is the allowable tolerance for an AM directional antenna system's current ratio readings?
• Which process is vital for maintaining audio levels before broadcasting live?
• When a tower light outage is observed, how soon must the FAA be notified of the outage?
• What does "EIRP" stand for and why is it important?
• What does the term "gain" refer to in audio mixing?
• Which device allows for the manipulation of audio frequencies to enhance the sound?
• If a station is suspected of being off the air, what is the proper course of action to verify the off-air condition?
• In audio production, what does a higher decibel level indicate?
• Which type of microphone would be a better choice for use with a loud speaking announcer who wants to speak very close to the microphone?
• What is a broadcast repeater?
• What is considered to be the audio frequency range of human hearing?
• What is a common name for a computer-based system that is capable of recording, playing, and editing digital audio?
• Why is an oscilloscope used in radio testing?
• What method is used when a transmitter's output power is read directly from a wattmeter?
• What is the function of a remote control and monitoring unit in a radio station?
• When dealing with RF output, what is crucial for maintaining compliance?
• What can cause multipath interference in radio communications?
• What is a common use of multiplexing in radio technology?
• What does the abbreviation ERP stand for in broadcasting?
• What is a critical outcome of not regularly calibrating a transmitter?
• What transmitter reading may increase when ice forms on the antenna?
• What role does a broadcast engineer play in radio operations?
• What is the major purpose of a community license for non-commercial FM radio stations?
• What is a phase-locked loop (PLL)?
• What is an RF generator used for?
• What is the primary responsibility of a radio station's chief operator?
• What does "EMI" stand for in the context of radio operations?
• Which modulation technique is commonly used in AM broadcasting?
• Why is it important to maintain a program log?
• Which unit is used to indicate a value of power?
• What role does the FCC play in radio operations?
• What are the meters used to measure audio levels on an audio mixing device called?
• How many classes of AM stations are there?
• What does "DAB" stand for in radio broadcasting?
• What is the general role of a radio station’s chief engineer?
• What does SBE stand for in the context of radio operations?
• In broadcast audio, what does "S/N ratio" refer to?
• What is one of the main components of an RF amplifier?
• How soon must a station retransmit a required monthly test (RMT)?
• What is the name of the audio output channel of an audio mixing device that can be used to listen to an audio source without activating the mixing device's channel-on or channel-assign switches?
• What is the frequency range of the FM non-reserved commercial band?
• What is the importance of a transmission line in a radio system?
• Define "modulation" in the context of radio communications.
• What would an operator typically do if they notice frequency drift during a transmission?
• What must be true for a radio station's required weekly test to be considered valid?
• What role does modulation play in radio broadcasting?
• Which of the following describes the function of an oscillator in a radio transmitter?
• What is the purpose of a low-pass filter in a broadcast system?
• Which device interfaces a telephone line to the station's audio mixing console for the purpose of putting callers on the air?
• What is used to measure AM directional antenna operating parameters?
• Which federal agency limits the number of radio stations in the United States?
• How important is it for the telephone hybrid to work correctly during on-air calls?
• What does "Doppler shift" refer to in the context of frequency and velocity?
• What is the primary function of an ISDN codec in radio broadcasting?
• To whom is a station operator primarily accountable?
• What does a mix-minus audio feed help prevent during calls?
• What is the purpose of a compressor in audio broadcasting?
• In percent, what are the minimum and maximum permissible power limits for an FM station without a sub carrier?
• In radio terminology, what does RF stand for?
• What is the significance of using a test tone in audio broadcasting?
• What should be done when a meter reading is observed to be outside the permitted tolerance and it cannot be readily corrected?
• Which part of the Code of Federal Regulations covers the rules for operating a radio station?
• To whom should problems of a technical nature at a station normally be reported?
• What guides the station operator in knowing when to air specific programs?
• In an HD Radio system, the Importer enables multiple broadcasts within a single FM channel. What does this allow a broadcaster to do?
• One kilohertz is equal to:
• What device is used by a radio station to select and control the level of audio sources to be put on the air?
• What does the term "latency" refer to in radio transmission?
• Which of the following best describes the function of a transmitter?
• What is the significance of bandwidth in radio communication?
• Why is grounding important in a radio transmission system?
• What is meant by "antenna gain"?
• What is the name of the microwave radio system that connects the studio audio output to the transmitter's audio input when the studio and transmitter sites are not in the same location?
• Which microphone type is often preferred for studio recording due to its sensitivity and audio fidelity?
• How often should a station without an automatic tower light monitoring device inspect its tower lights for proper operation?
• What do the terms PSSA and PSRA mean?
• What is the name given to a remote control and monitoring system that automatically monitors a transmitter's operating functions and parameters and will call a designated person in case of a problem?
• Which is NOT a role of the station owner?
• Is it true that an EAS can be held until a convenient point in programming?
• What type of groups or people typically hold station licenses for the reserved non-commercial FM frequencies?
• What does the term "bandwidth" refer to in a radio context?
• What is the primary purpose of a receiver in a radio system?
• What could a significant dip in audio frequency response indicate during broadcasting?
• Which type of modulation varies the strength of the transmitted signal?
• A radio station might use a _____ antenna to minimize interference to another station.
• What kind of microphone would use phantom power?
• What are the two most popular types of STL systems?
• Why is it important to maintain proper signal polarization?
• What must a caller be notified about before being recorded for on-air playback?
• What does the term "co-location" mean in broadcasting?
• Daytime AM radio stations are permitted to broadcast from what times?
• What is the frequency range of the FM reserved non-commercial band?
• What role does frequency play in radio communications?
• In the broadcasting context, what does "STL" stand for?
• What type of audio processing removes unwanted noise from a recording?
• Which device is used to measure the power of a radio signal?
• Which of the following actions is most likely to cause interference in radio broadcasting?
• What is the purpose of using a directional antenna by either an AM or FM station?
• What does "FDM" stand for in radio communication?
• During ducking, what happens to the audio level of the source being reduced?
• What are sources connected to an audio mixing device so they can be broadcast or recorded?
• What does "AM" stand for in broadcasting?
• What is the unit of measurement used to indicate the level of sound?
• Which of the following devices would produce an RF signal at its output?
• Which of the following responsibilities is NOT associated with a radio station's chief engineer?
• What type of modulation is primarily used in digital audio broadcasting?
• In radio terms, what does the term "SWR" stand for?
• How can unwanted radio interference be reduced in communication systems?
• Why are daytime AM stations not permitted to operate at night?
• What is a "coverage map" in radio broadcasting?
• What is the range of the AM frequency band?
• A required weekly test (RWT) must be sent in the same week as which other test?
• What is the primary function of a transmitter in a two-way radio system?
• Define the term "harmonics" in radio transmission.
• Does an FCC inspector need to make an appointment with a station to conduct an inspection?
• Why is frequency coordination important in radio communications?
• What can cigarette smoke do to electronic equipment?
• What is a common use for the 2.4 GHz frequency band in radio technology?
• What is the formula to calculate the wavelength of a radio wave?
• What is the purpose of an audio console in broadcasting?
• If the studio-to-transmitter (STL) signal connection is lost, what may happen?
• What does the acronym "VHF" stand for?
• Which task is primarily associated with a digital audio workstation?
• Where must the station license be kept?
• How often must a broadcast station be identified over the air?
• What does the term "dynamic range" refer to in audio signals?
• What is the main purpose of the required tests (RWT and RMT) in radio operations?
• What may result when an audio level exceeds the maximum reading of a VU meter?
• What is the purpose of the limit frequency filter in a radio system?
• Does audio compression affect the dynamic range of audio?
• What is the primary purpose of a dipole antenna?
• What are the primary classes of FM stations in the United States?
• What is typically done when a malfunctioning meter is identified at a radio station?
• Which unit is used to read and control a radio station's transmitter and other technical operating parameters?
• What is the function of a limiter in audio processing?
• What is the name of the switch on an audio device input channel used to send that input channel's audio to a specific output?
• What does the term "bandwidth" refer to in radio communications?