FCC Question ID
E1A04
With your transceiver displaying the carrier frequency of phone signals, you hear a DX station calling CQ on 3.601 MHz LSB. Is it legal to return the call using lower sideband on the same frequency?
Yes, because the DX station initiated the contact
Yes, because the displayed frequency is within the 75 meter phone band segment
No, the sideband will extend beyond the edge of the phone band segment
No, U.S. stations are not permitted to use phone emissions below 3.610 MHz
E1B06
Which of the following additional rules apply if you are installing an amateur station antenna at a site at or near a public use airport?
You may have to notify the Federal Aviation Administration and register it with the FCC as required by Part 17 of FCC rules
No special rules apply if your antenna structure will be less than 300 feet in height
You must file an Environmental Impact Statement with the EPA before construction begins
You must obtain a construction permit from the airport zoning authority
E1C05
When may an automatically controlled station originate third party communications?
Never
Only when transmitting RTTY or data emissions
When agreed upon by the sending or receiving station
When approved by the National Telecommunication and Information Administration
E1D02
What is the amateur satellite service?
A radio navigation service using satellites for the purpose of self training, intercommunication and technical studies carried out by amateurs
A spacecraft launching service for amateur-built satellites
A radio communications service using amateur radio stations on satellites
A radio communications service using stations on Earth satellites for public service broadcast
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%
E1F09
Which of the following conditions apply when transmitting spread spectrum emission?
A station transmitting SS emission must not cause harmful interference to other stations employing other authorized emissions
The transmitting station must be in an area regulated by the FCC or in a country that permits SS emissions
The transmission must not be used to obscure the meaning of any communication
All of these choices are correct
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
E2B07
What is the name of the signal component that carries color information in NTSC video?
E2C08
Which of the following contacts may be confirmed through the U.S. QSL bureau system?
Special event contacts between stations in the U.S.
Contacts between a U.S. station and a non-U.S. station
Repeater contacts between U.S. club members
Contacts using tactical call signs
E2D07
What digital protocol is used by APRS?
E2E04
What is indicated when one of the ellipses in an FSK crossed-ellipse display suddenly disappears?
Selective fading has occurred
One of the signal filters is saturated
The receiver has drifted 5 kHz from the desired receive frequency
The mark and space signal have been inverted
E3A10
Which type of atmospheric structure can create a path for microwave propagation?
E3B12
What is the primary characteristic of chordal hop propagation?
Propagation away from the great circle bearing between stations
Successive ionospheric reflections without an intermediate reflection from the ground
Propagation across the geomagnetic equator
Signals reflected back toward the transmitting station
E3C07
Which of the following descriptors indicates the greatest solar flare intensity?
E4A07
Which of the following is an advantage of using an antenna analyzer compared to an SWR bridge to measure antenna SWR?
Antenna analyzers automatically tune your antenna for resonance
Antenna analyzers do not need an external RF source
Antenna analyzers display a time-varying representation of the modulation envelope
All of these choices are correct
E4B11
How should an antenna analyzer be connected when measuring antenna resonance and feed point impedance?
Loosely couple the analyzer near the antenna base
Connect the analyzer via a high-impedance transformer to the antenna
Loosely couple the antenna and a dummy load to the analyzer
Connect the antenna feed line directly to the analyzer's connector
E4C17
Which of the following has the largest effect on an SDR receiver’s linearity?
CPU register width in bits
Anti-aliasing input filter bandwidth
RAM speed used for data storage
Analog-to-digital converter sample width in bits
E4D14
Which of the following is a way to reduce the likelihood of receiver desensitization?
Decrease the RF bandwidth of the receiver
Raise the receiver IF frequency
Increase the receiver front end gain
Switch from fast AGC to slow AGC
E4E01
Which of the following types of receiver noise can often be reduced by use of a receiver noise blanker?
Ignition noise
Broadband white noise
Heterodyne interference
All of these choices are correct
E5A08
What is the phase relationship between the current through and the voltage across a series resonant circuit at resonance?
The voltage leads the current by 90 degrees
The current leads the voltage by 90 degrees
The voltage and current are in phase
The voltage and current are 180 degrees out of phase
E5B09
What is the relationship between the current through a capacitor and the voltage across a capacitor?
Voltage and current are in phase
Voltage and current are 180 degrees out of phase
Voltage leads current by 90 degrees
Current leads voltage by 90 degrees
E5C06
What does the impedance 50–j25 represent?
50 ohms resistance in series with 25 ohms inductive reactance
50 ohms resistance in series with 25 ohms capacitive reactance
25 ohms resistance in series with 50 ohms inductive reactance
25 ohms resistance in series with 50 ohms capacitive reactance
E5D08
What type of energy is stored in an electromagnetic or electrostatic field?
Electromechanical energy
Potential energy
Thermodynamic energy
Kinetic energy
E6A03
Why does a PN-junction diode not conduct current when reverse biased?
Only P-type semiconductor material can conduct current
Only N-type semiconductor material can conduct current
Holes in P-type material and electrons in the N-type material are separated by the applied voltage, widening the depletion region
Excess holes in P-type material combine with the electrons in N-type material, converting the entire diode into an insulator
E6B06
Which of the following is a common use of a hot-carrier diode?
As balanced mixers in FM generation
As a variable capacitance in an automatic frequency control circuit
As a constant voltage reference in a power supply
As a VHF/UHF mixer or detector
E6C05
What is an advantage of CMOS logic devices over TTL devices?
Differential output capability
Lower distortion
Immune to damage from static discharge
Lower power consumption
E6D05
What is one reason for using ferrite cores rather than powdered-iron in an inductor?
Ferrite toroids generally have lower initial permeability
Ferrite toroids generally have better temperature stability
Ferrite toroids generally require fewer turns to produce a given inductance value
Ferrite toroids are easier to use with surface mount technology
E6E12
Why are high-power RF amplifier ICs and transistors sometimes mounted in ceramic packages?
High-voltage insulating ability
Better dissipation of heat
Enhanced sensitivity to light
To provide a low-pass frequency response
E6F11
What is the approximate open-circuit voltage produced by a fully-illuminated silicon photovoltaic cell?
E7A08
What logical operation does an OR gate perform?
It produces logic "1" at its output if any or all inputs are logic "1"
It produces logic "0" at its output if all inputs are logic "1"
It only produces logic "0" at its output when all inputs are logic "1"
It produces logic "1" at its output if all inputs are logic "0"
E7B18
What is a characteristic of a grounded-grid amplifier?
High power gain
High filament voltage
Low input impedance
Low bandwidth
E7C14
Which mode is most affected by non-linear phase response in a receiver IF filter?
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
E7E02
What is the function of a reactance modulator?
To produce PM signals by using an electrically variable resistance
To produce AM signals by using an electrically variable inductance or capacitance
To produce AM signals by using an electrically variable resistance
To produce PM signals by using an electrically variable inductance or capacitance
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
E7G08
How does the gain of an ideal operational amplifier vary with frequency?
It increases linearly with increasing frequency
It decreases linearly with increasing frequency
It decreases logarithmically with increasing frequency
It does not vary with frequency
E7H06
Which of the following oscillator circuits are commonly used in VFOs?
Pierce and Zener
Colpitts and Hartley
Armstrong and deForest
Negative feedback and balanced feedback
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
E8B07
Orthogonal Frequency Division Multiplexing is a technique used for which type of amateur communication?
High speed digital modes
Extremely low-power contacts
EME
OFDM signals are not allowed on amateur bands
E8C10
What is an advantage of Gray code in digital communications where symbols are transmitted as multiple bits?
It increases security
It has more possible states than simple binary
It has more resolution than simple binary
It facilitates error detection
E8D03
How does the spread spectrum technique of frequency hopping work?
If interference is detected by the receiver it will signal the transmitter to change frequencies
If interference is detected by the receiver it will signal the transmitter to wait until the frequency is clear
A pseudo-random binary bit stream is used to shift the phase of an RF carrier very rapidly in a particular sequence
The frequency of the transmitted signal is changed very rapidly according to a particular sequence also used by the receiving station
E9A10
Which of the following choices is a way to improve the efficiency of a ground-mounted quarter-wave vertical antenna?
Install a good radial system
Isolate the coax shield from ground
Shorten the radiating element
Reduce the diameter of the radiating element
E9B14
What type of information can be obtained by submitting the details of a proposed new antenna to a modeling program?
SWR vs frequency charts
Polar plots of the far field elevation and azimuth patterns
Antenna gain
All of these choices are correct
E9C05
What is an OCFD antenna?
A dipole fed approximately 1/3 the way from one end with a 4:1 balun to provide multiband operation
A remotely tunable dipole antenna using orthogonally controlled frequency diversity
An eight band dipole antenna using octophase filters
A multiband dipole antenna using one-way circular polarization for frequency diversity
E9D07
What is an advantage of using top loading in a shortened HF vertical antenna?
Lower Q
Greater structural strength
Higher losses
Improved radiation efficiency
E9E04
What is the purpose of the series capacitor in a gamma-type antenna matching network?
To provide DC isolation between the feed line and the antenna
To cancel the inductive reactance of the matching network
To provide a rejection notch that prevents the radiation of harmonics
To transform the antenna impedance to a higher value
E9F07
How does ladder line compare to small-diameter coaxial cable such as RG-58 at 50 MHz?
Lower loss
Higher SWR
Smaller reflection coefficient
Lower velocity factor
E9G01
Which of the following can be calculated using a Smith chart?
Impedance along transmission lines
Radiation resistance
Antenna radiation pattern
Radio propagation
E9H01
When constructing a Beverage antenna, which of the following factors should be included in the design to achieve good performance at the desired frequency?
Its overall length must not exceed 1/4 wavelength
It must be mounted more than 1 wavelength above ground
It should be configured as a four-sided loop
It should be one or more wavelengths long