FCC Question ID
E1A10
If an amateur station is installed aboard a ship or aircraft, what condition must be met before the station is operated?
Its operation must be approved by the master of the ship or the pilot in command of the aircraft
The amateur station operator must agree not to transmit when the main radio of the ship or aircraft is in use
The amateur station must have a power supply that is completely independent of the main ship or aircraft power supply
The amateur operator must have an FCC Marine or Aircraft endorsement on his or her amateur license
E1B05
What is the National Radio Quiet Zone?
An area in Puerto Rico surrounding the Arecibo Radio Telescope
An area in New Mexico surrounding the White Sands Test Area
An area surrounding the National Radio Astronomy Observatory
An area in Florida surrounding Cape Canaveral
E1C04
What is meant by IARP?
An international amateur radio permit that allows U.S. amateurs to operate in certain countries of the Americas
The internal amateur radio practices policy of the FCC
An indication of increased antenna reflected power
A forecast of intermittent aurora radio propagation
E1D04
What is an Earth station in the amateur satellite service?
An amateur station within 50 km of the Earth's surface intended for communications with amateur stations by means of objects in space
An amateur station that is not able to communicate using amateur satellites
An amateur station that transmits telemetry consisting of measurement of upper atmosphere data
Any amateur station on the surface of the Earth
E1E01
What is the minimum number of qualified VEs required to administer an Element 4 amateur operator license examination?
E1F04
Which of the following geographic descriptions approximately describes "Line A"?
A line roughly parallel to and south of the U.S.-Canadian border
A line roughly parallel to and west of the U.S. Atlantic coastline
A line roughly parallel to and north of the U.S.-Mexican border and Gulf coastline
A line roughly parallel to and east of the U.S. Pacific coastline
E2A07
Which of the following types of signals can be relayed through a linear transponder?
FM and CW
SSB and SSTV
PSK and Packet
All of these choices are correct
E2B01
How many times per second is a new frame transmitted in a fast-scan (NTSC) television system?
E2C06
During a VHF/UHF contest, in which band segment would you expect to find the highest level of activity?
At the top of each band, usually in a segment reserved for contests
In the middle of each band, usually on the national calling frequency
In the weak signal segment of the band, with most of the activity near the calling frequency
In the middle of the band, usually 25 kHz above the national calling frequency
E2D08
What type of packet frame is used to transmit APRS beacon data?
E2E06
What is the most common data rate used for HF packet?
E3A10
Which type of atmospheric structure can create a path for microwave propagation?
E3B01
What is transequatorial propagation?
Propagation between two mid-latitude points at approximately the same distance north and south of the magnetic equator
Propagation between any two points located on the magnetic equator
Propagation between two continents by way of ducts along the magnetic equator
Propagation between two stations at the same latitude
E3C03
Which of the following signal paths is most likely to experience high levels of absorption when the A index or K index is elevated?
E4A09
When using a computer’s soundcard input to digitize signals, what is the highest frequency signal that can be digitized without aliasing?
The same as the sample rate
One-half the sample rate
One-tenth the sample rate
It depends on how the data is stored internally
E4B01
Which of the following factors most affects the accuracy of a frequency counter?
Input attenuator accuracy
Time base accuracy
Decade divider accuracy
Temperature coefficient of the logic
E4C05
What does a value of -174 dBm/Hz represent with regard to the noise floor of a receiver?
The minimum detectable signal as a function of receive frequency
The theoretical noise at the input of a perfect receiver at room temperature
The noise figure of a 1 Hz bandwidth receiver
The galactic noise contribution to minimum detectable signal
E4D05
What transmitter frequencies would cause an intermodulation-product signal in a receiver tuned to 146.70 MHz when a nearby station transmits on 146.52 MHz?
146.34 MHz and 146.61 MHz
146.88 MHz and 146.34 MHz
146.10 MHz and 147.30 MHz
173.35 MHz and 139.40 MHz
E4E09
What undesirable effect can occur when using an IF noise blanker?
Received audio in the speech range might have an echo effect
The audio frequency bandwidth of the received signal might be compressed
Nearby signals may appear to be excessively wide even if they meet emission standards
FM signals can no longer be demodulated
E5A09
How is the Q of an RLC parallel resonant circuit calculated?
Reactance of either the inductance or capacitance divided by the resistance
Reactance of either the inductance or capacitance multiplied by the resistance
Resistance divided by the reactance of either the inductance or capacitance
Reactance of the inductance multiplied by the reactance of the capacitance
E5B02
What is the term for the time it takes for a charged capacitor in an RC circuit to discharge to 36.8% of its initial voltage?
One discharge period
An exponential discharge rate of one
A discharge factor of one
One time constant
E5C10
When using rectangular coordinates to graph the impedance of a circuit, what does the vertical axis represent?
Resistive component
Reactive component
The sum of the reactive and resistive components
The difference between the resistive and reactive components
E5D09
What happens to reactive power in an AC circuit that has both ideal inductors and ideal capacitors?
It is dissipated as heat in the circuit
It is repeatedly exchanged between the associated magnetic and electric fields, but is not dissipated
It is dissipated as kinetic energy in the circuit
It is dissipated in the formation of inductive and capacitive fields
E6A13
What do the initials CMOS stand for?
Common Mode Oscillating System
Complementary Mica-Oxide Silicon
Complementary Metal-Oxide Semiconductor
Common Mode Organic Silicon
E6B08
Which of the following describes a type of semiconductor diode?
Metal-semiconductor junction
Electrolytic rectifier
CMOS-field effect
Thermionic emission diode
E6C09
What is a Programmable Logic Device (PLD)?
A device to control industrial equipment
A programmable collection of logic gates and circuits in a single integrated circuit
Programmable equipment used for testing digital logic integrated circuits
An algorithm for simulating logic functions during circuit design
E6D11
How many turns will be required to produce a 1-mH inductor using a core that has an inductance index (A L) value of 523 millihenrys/1000 turns?
E6E09
Which of the following component package types would be most suitable for use at frequencies above the HF range?
E6F11
What is the approximate open-circuit voltage produced by a fully-illuminated silicon photovoltaic cell?
E7A12
What type of logic defines "0" as a high voltage?
E7B02
What is a Class D amplifier?
A type of amplifier that uses switching technology to achieve high efficiency
A low power amplifier that uses a differential amplifier for improved linearity
An amplifier that uses drift-mode FETs for high efficiency
A frequency doubling amplifier
E7C06
What are the distinguishing features of an elliptical filter?
Gradual passband rolloff with minimal stop band ripple
Extremely flat response over its pass band with gradually rounded stop band corners
Extremely sharp cutoff with one or more notches in the stop band
Gradual passband rolloff with extreme stop band ripple
E7D12
What is the drop-out voltage of an analog voltage regulator?
Minimum input voltage for rated power dissipation
Maximum amount that the output voltage drops when the input voltage is varied over its specified range
Minimum input-to-output voltage required to maintain regulation
Maximum amount that the output voltage may decrease at rated load
E7E04
What is one way a single-sideband phone signal can be generated?
By using a balanced modulator followed by a filter
By using a reactance modulator followed by a mixer
By using a loop modulator followed by a mixer
By driving a product detector with a DSB signal
E7F14
Which of the following would allow a digital signal processing filter to create a sharper filter response?
Higher data rate
More taps
Complex phasor representations
Double-precision math routines
E7G11
What absolute voltage gain can be expected from the circuit in Figure E7-4 when R1 is 3300 ohms and RF is 47 kilohms?
E7H09
What type of frequency synthesizer circuit uses a phase accumulator, lookup table, digital to analog converter, and a low- pass anti-alias filter?
A direct digital synthesizer
A hybrid synthesizer
A phase locked loop synthesizer
A diode-switching matrix synthesizer
E8A10
What is the purpose of a low pass filter used in conjunction with a digital-to-analog converter?
Lower the input bandwidth to increase the effective resolution
Improve accuracy by removing out of sequence codes from the input
Remove harmonics from the output caused by the discrete analog levels generated
All of these choices are correct
E8B02
How does the modulation index of a phase-modulated emission vary with RF carrier frequency (the modulated frequency)?
It increases as the RF carrier frequency increases
It decreases as the RF carrier frequency increases
It varies with the square root of the RF carrier frequency
It does not depend on the RF carrier frequency
E8C04
What technique is used to minimize the bandwidth requirements of a PSK31 signal?
Zero-sum character encoding
Reed-Solomon character encoding
Use of sinusoidal data pulses
Use of trapezoidal data pulses
E8D01
Why are received spread spectrum signals resistant to interference?
Signals not using the spread spectrum algorithm are suppressed in the receiver
The high power used by a spread spectrum transmitter keeps its signal from being easily overpowered
The receiver is always equipped with a digital blanker
If interference is detected by the receiver it will signal the transmitter to change frequencies
E9A13
How much gain does an antenna have compared to a 1/2-wavelength dipole when it has 12 dB gain over an isotropic antenna?
E9B04
What may occur when a directional antenna is operated at different frequencies within the band for which it was designed?
Feed point impedance may become negative
The E-field and H-field patterns may reverse
Element spacing limits could be exceeded
The gain may change depending on frequency
E9C10
Which of the following describes a Zepp antenna?
A dipole constructed from zip cord
An end fed dipole antenna
An omni-directional antenna commonly used for satellite communications
A vertical array capable of quickly changing the direction of maximum radiation by changing phasing lines
E9D08
What happens as the Q of an antenna increases?
SWR bandwidth increases
SWR bandwidth decreases
Gain is reduced
More common-mode current is present on the feed line
E9E03
What is the name of the matching system that uses a section of transmission line connected in parallel with the feed line at or near the feed point?
E9F16
Which of the following is a significant difference between foam dielectric coaxial cable and solid dielectric cable, assuming all other parameters are the same?
Foam dielectric has lower safe operating voltage limits
Foam dielectric has lower loss per unit of length
Foam dielectric has higher velocity factor
All of these choices are correct
E9G11
How are the wavelength scales on a Smith chart calibrated?
In fractions of transmission line electrical frequency
In fractions of transmission line electrical wavelength
In fractions of antenna electrical wavelength
In fractions of antenna electrical frequency
E9H08
What is the function of a sense antenna?
It modifies the pattern of a DF antenna array to provide a null in one direction
It increases the sensitivity of a DF antenna array
It allows DF antennas to receive signals at different vertical angles
It provides diversity reception that cancels multipath signals
E0A03
Which of the following would be a practical way to estimate whether the RF fields produced by an amateur radio station are within permissible MPE limits?
Use a calibrated antenna analyzer
Use a hand calculator plus Smith-chart equations to calculate the fields
Use an antenna modeling program to calculate field strength at accessible locations
All of the choices are correct