FCC Question ID
E1A05
What is the maximum power output permitted on the 60 meter band?
50 watts PEP effective radiated power relative to an isotropic radiator
50 watts PEP effective radiated power relative to a dipole
100 watts PEP effective radiated power relative to the gain of a half-wave dipole
100 watts PEP effective radiated power relative to an isotropic radiator
E1B08
What limitations may the FCC place on an amateur station if its signal causes interference to domestic broadcast reception, assuming that the receivers involved are of good engineering design?
The amateur station must cease operation
The amateur station must cease operation on all frequencies below 30 MHz
The amateur station must cease operation on all frequencies above 30 MHz
The amateur station must avoid transmitting during certain hours on frequencies that cause the interference
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
E1D09
Which UHF amateur service bands have frequencies available for a space station?
E1E05
What is the minimum passing score on amateur operator license examinations?
Minimum passing score of 70%
Minimum passing score of 74%
Minimum passing score of 80%
Minimum passing score of 77%
E1F03
Under what circumstances may a dealer sell an external RF power amplifier capable of operation below 144 MHz if it has not been granted FCC certification?
It was purchased in used condition from an amateur operator and is sold to another amateur operator for use at that operator's station
The equipment dealer assembled it from a kit
It was imported from a manufacturer in a country that does not require certification of RF power amplifiers
It was imported from a manufacturer in another country and was certificated by that country’s government
E2A01
What is the direction of an ascending pass for an amateur satellite?
From west to east
From east to west
From south to north
From north to south
E2B17
What is the approximate bandwidth of a slow-scan TV signal?
E2C02
Which of the following best describes the term self-spotting in regards to HF contest operating?
The generally prohibited practice of posting one’s own call sign and frequency on a spotting network
The acceptable practice of manually posting the call signs of stations on a spotting network
A manual technique for rapidly zero beating or tuning to a station’s frequency before calling that station
An automatic method for rapidly zero beating or tuning to a station’s frequency before calling that station
E2D03
Which of the following digital modes is especially useful for EME communications?
E2E13
Which of the following is a possible reason that attempts to initiate contact with a digital station on a clear frequency are unsuccessful?
Your transmit frequency is incorrect
The protocol version you are using is not supported by the digital station
Another station you are unable to hear is using the frequency
All of these choices are correct
E3A04
What do Hepburn maps predict?
Sporadic E propagation
Locations of auroral reflecting zones
Likelihood of rain-scatter along cold or warm fronts
Probability of tropospheric propagation
E3B02
What is the approximate maximum range for signals using transequatorial propagation?
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?
E4A03
Which of the following test instruments is used to display spurious signals and/or intermodulation distortion products in an SSB transmitter?
A wattmeter
A spectrum analyzer
A logic analyzer
A time-domain reflectometer
E4B06
How much power is being absorbed by the load when a directional power meter connected between a transmitter and a terminating load reads 100 watts forward power and 25 watts reflected power?
E4C08
An SDR receiver is overloaded when input signals exceed what level?
One-half the maximum sample rate
One-half the maximum sampling buffer size
The maximum count value of the analog-to-digital converter
The reference voltage of the analog-to-digital converter
E4D02
Which of the following describes two problems caused by poor dynamic range in a communications receiver?
Cross-modulation of the desired signal and desensitization from strong adjacent signals
Oscillator instability requiring frequent retuning and loss of ability to recover the opposite sideband
Cross-modulation of the desired signal and insufficient audio power to operate the speaker
Oscillator instability and severe audio distortion of all but the strongest received signals
E4E07
How can you determine if line noise interference is being generated within your home?
By checking the power line voltage with a time domain reflectometer
By observing the AC power line waveform with an oscilloscope
By turning off the AC power line main circuit breaker and listening on a battery operated radio
By observing the AC power line voltage with a spectrum analyzer
E5A04
What is the magnitude of the impedance of a circuit with a resistor, an inductor and a capacitor all in parallel, at resonance?
Approximately equal to circuit resistance
Approximately equal to inductive reactance
Low, as compared to the circuit resistance
Approximately equal to capacitive reactance
E5B05
What happens to the magnitude of a reactance when it is converted to a susceptance?
It is unchanged
The sign is reversed
It is shifted by 90 degrees
The magnitude of the susceptance is the reciprocal of the magnitude of the reactance
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
E6A16
What are the majority charge carriers in N-type semiconductor material?
E6B04
What type of semiconductor device is designed for use as a voltage-controlled capacitor?
Varactor diode
Tunnel diode
Silicon-controlled rectifier
Zener diode
E6C07
What best describes a pull-up or pull-down resistor?
A resistor in a keying circuit used to reduce key clicks
A resistor connected to the positive or negative supply line used to establish a voltage when an input or output is an open circuit
A resistor that insures that an oscillator frequency does not drive lower over time
A resistor connected to an op-amp output that only functions when the logic output is false
E6D17
Why should core saturation of a conventional impedance matching transformer be avoided?
Harmonics and distortion could result
Magnetic flux would increase with frequency
RF susceptance would increase
Temporary changes of the core permeability could result
E6E07
Which of the following is typically used to construct a MMIC-based microwave amplifier?
Ground-plane construction
Microstrip construction
Point-to-point construction
Wave-soldering construction
E6F06
Which of these materials is affected the most by photoconductivity?
A crystalline semiconductor
An ordinary metal
A heavy metal
A liquid semiconductor
E7A01
Which is a bi-stable circuit?
E7B08
How can an RF power amplifier be neutralized?
By increasing the driving power
By reducing the driving power
By feeding a 180-degree out-of-phase portion of the output back to the input
By feeding an in-phase component of the output back to the input
E7C12
Which describes a Pi-L-network used for matching a vacuum tube final amplifier to a 50 ohm unbalanced output?
A Phase Inverter Load network
A Pi-network with an additional series inductor on the output
A network with only three discrete parts
A matching network in which all components are isolated from ground
E7D06
What is the purpose of Q1 in the circuit shown in Figure E7-3?
It provides negative feedback to improve regulation
It provides a constant load for the voltage source
It increases the current-handling capability of the regulator
It provides D1 with current
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
E7F16
How might the sampling rate of an existing digital signal be adjusted by a factor of 3/4?
Change the gain by a factor of 3/4
Multiply each sample value by a factor of 3/4
Add 3 to each input value and subtract 4 from each output value
Interpolate by a factor of three, then decimate by a factor of four
E7G02
What is the effect of ringing in a filter?
An echo caused by a long time delay
A reduction in high frequency response
Partial cancellation of the signal over a range of frequencies
Undesired oscillations added to the desired signal
E7H08
Which of the following components can be used to reduce thermal drift in crystal oscillators?
NP0 capacitors
Toroidal inductors
Wirewound resistors
Non-inductive resistors
E8A12
What is an advantage of using digital signals instead of analog signals to convey the same information?
Less complex circuitry is required for digital signal generation and detection
Digital signals always occupy a narrower bandwidth
Digital signals can be regenerated multiple times without error
All of these choices are correct
E8B03
What is the modulation index of an FM-phone signal having a maximum frequency deviation of 3000 Hz either side of the carrier frequency when the modulating frequency is 1000 Hz?
E8C09
Which is the name of a digital code where each preceding or following character changes by only one bit?
Binary Coded Decimal Code
Extended Binary Coded Decimal Interchange Code
Excess 3 code
Gray code
E8D10
What are some of the differences between the Baudot digital code and ASCII?
Baudot uses 4 data bits per character, ASCII uses 7 or 8; Baudot uses 1 character as a letters/figures shift code, ASCII has no letters/figures code
Baudot uses 5 data bits per character, ASCII uses 7 or 8; Baudot uses 2 characters as letters/figures shift codes, ASCII has no letters/figures shift code
Baudot uses 6 data bits per character, ASCII uses 7 or 8; Baudot has no letters/figures shift code, ASCII uses 2 letters/figures shift codes
Baudot uses 7 data bits per character, ASCII uses 8; Baudot has no letters/figures shift code, ASCII uses 2 letters/figures shift codes
E9A14
What is meant by the radiation resistance of an antenna?
The combined losses of the antenna elements and feed line
The specific impedance of the antenna
The value of a resistance that would dissipate the same amount of power as that radiated from an antenna
The resistance in the atmosphere that an antenna must overcome to be able to radiate a signal
E9B13
What does the abbreviation NEC stand for when applied to antenna modeling programs?
Next Element Comparison
Numerical Electromagnetic Code
National Electrical Code
Numeric Electrical Computation
E9C07
What is the approximate feed point impedance at the center of a two-wire folded dipole antenna?
E9D12
Which of the following would provide the best RF ground for your station?
A 50 ohm resistor connected to ground
An electrically short connection to a metal water pipe
An electrically short connection to 3 or 4 interconnected ground rods driven into the Earth
An electrically short connection to 3 or 4 interconnected ground rods via a series RF choke
E9E06
What is the equivalent lumped-constant network for a hairpin matching system of a 3-element Yagi?
E9F15
What impedance does a 1/2 wavelength transmission line present to a generator when the line is open at the far end?
Very high impedance
Very low impedance
The same as the characteristic impedance of the line
The same as the output impedance of the generator
E9G05
What type of chart is shown in Figure E9-3?
Smith chart
Free space radiation directivity chart
Elevation angle radiation pattern chart
Azimuth angle radiation pattern chart
E9H04
What is an advantage of using a shielded loop antenna for direction finding?
It automatically cancels ignition noise in mobile installations
It is electro statically balanced against ground, giving better nulls
It eliminates tracking errors caused by strong out-of-band signals
It allows stations to communicate without giving away their position
E0A04
When evaluating a site with multiple transmitters operating at the same time, the operators and licensees of which transmitters are responsible for mitigating over-exposure situations?
Only the most powerful transmitter
Only commercial transmitters
Each transmitter that produces 5 percent or more of its MPE limit at accessible locations
Each transmitter operating with a duty-cycle greater than 50 percent