E0A05: What is one of the potential hazards of using microwaves in the amateur radio bands?

Microwaves are ionizing radiation

Microwaves often travel long distances by ionospheric reflection

The extremely high frequency energy can damage the joints of antenna structures

E1A03: With your transceiver displaying the carrier frequency of phone signals, you hear a DX station's CQ on 14.349 MHz USB. Is it legal to return the call using upper sideband on the same frequency?

Yes, because the DX station initiated the contact

Yes, because the displayed frequency is within the 20 meter band

No, USA stations are not permitted to use phone emissions above 14.340 MHz

E1B12: What is the highest modulation index permitted at the highest modulation frequency for angle modulation?

.5

2.0

3.0

E1C06: Which of the following statements concerning remotely controlled amateur stations is true?

Only Extra Class operators may be the control operator of a remote station

A control operator need not be present at the control point

Repeater and auxiliary stations may not be remotely controlled

E1D01: What is the definition of the term telemetry?

Two-way radiotelephone transmissions in excess of 1000 feet

Two-way single channel transmissions of data

One-way transmission that initiates, modifies, or terminates the functions of a device at a distance

E1E14: For which types of out-of-pocket expenses do the Part 97 rules state that VEs and VECs may be reimbursed?

Teaching an amateur operator license examination preparation course

No expenses are authorized for reimbursement

Providing amateur operator license examination preparation training materials

E1F11: Which of the following best describes one of the standards that must be met by an external RF power amplifier if it is to qualify for a grant of FCC certification?

It must produce full legal output when driven by not more than 5 watts of mean RF input power

It must be capable of external RF switching between its input and output networks

It must exhibit a gain of 0 dB or less over its full output range

E2A05: What do the letters in a satellite's mode designator specify?

Power limits for uplink and downlink transmissions

The location of the ground control station

The polarization of uplink and downlink signals

E2B08: Which of the following is a common method of transmitting accompanying audio with amateur fast-scan television?

Frequency-modulated sub-carrier

A separate VHF or UHF audio link

Frequency modulation of the video carrier

E2C09: 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

E2D05: Which of the following techniques is normally used by low Earth orbiting digital satellites to relay messages around the world?

Digipeating

Multi-satellite relaying

Node hopping

E2E11: What is the difference between direct FSK and audio FSK?

Audio FSK has a superior frequency response

Direct FSK uses a DC-coupled data connection

Audio FSK can be performed anywhere in the transmit chain

E3A03: When scheduling EME contacts, which of these conditions will generally result in the least path loss?

When the Moon is full

When the Moon is at apogee

When the MUF is above 30 MHz

E3B10: What is the cause of gray-line propagation?

At midday, the Sun being directly overhead superheats the ionosphere causing increased refraction of radio waves

In darkness, solar absorption drops greatly while atmospheric ionization remains steady

At mid afternoon, the Sun heats the ionosphere decreasing radio wave refraction and the MUF

E3C04: Which emission mode is best for Aurora propagation?

SSB

FM

RTTY

E4A03: Which of the following parameters would a spectrum analyzer display on the vertical axis?

Duration

SWR

Q

E4B01: Which of the following factors most affects the accuracy of a frequency counter?

Input attenuator accuracy

Decade divider accuracy

Temperature coefficient of the logic

E4C14: On which of the following frequencies might a signal be transmitting which is generating a spurious image signal in a receiver tuned to 14.300 MHz and which uses a 455 kHz IF frequency?

13.845 MHz

14.755 MHz

14.445 MHz

E4D02: Which of the following describes two problems caused by poor dynamic range in a communications receiver?

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

E4E11: Which of the following is the most likely cause if you are hearing combinations of local AM broadcast signals within one or more of the MF or HF ham bands?

The broadcast station is transmitting an over-modulated signal

You are receiving sky wave signals from a distant station

Your station receiver IF amplifier stage is defective

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 inductive reactance

Low, as compared to the circuit resistance

Approximately equal to capacitive reactance

E5B12: What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 75 ohms, R is 100 ohms, and XL is 50 ohms?

76 degrees with the voltage lagging the current

14 degrees with the voltage leading the current

76 degrees with the voltage leading the current

E5C12: If you plot the impedance of a circuit using the rectangular coordinate system and find the impedance point falls on the right side of the graph on the horizontal axis, what do you know about the circuit?

It has to be a direct current circuit

It contains resistance and capacitive reactance

It contains resistance and inductive reactance

E5D08: What type of energy is stored in an electromagnetic or electrostatic field?

Electromechanical energy

Thermodynamic energy

Kinetic energy

E6A17: What are the names of the three terminals of a field-effect transistor?

Gate 1, gate 2, drain

Emitter, base, collector

Emitter, base 1, base 2

E6B13: What type of bias is required for an LED to emit light?

Reverse bias

Zero bias

Inductive bias

E6C06: Why do CMOS digital integrated circuits have high immunity to noise on the input signal or power supply?

Larger bypass capacitors are used in CMOS circuit design

The input switching threshold is about two times the power supply voltage

Input signals are stronger

E6D10: What is a primary advantage of using a toroidal core instead of a solenoidal core in an inductor?

Toroidal cores make it easier to couple the magnetic energy into other components

Toroidal cores exhibit greater hysteresis

Toroidal cores have lower Q characteristics

E6E03: What is one aspect of the piezoelectric effect?

Mechanical deformation of a crystal by the application of a magnetic field

The generation of electrical energy by the application of light

Reversed conduction states when a P-N junction is exposed to light

E6F04: What is the photovoltaic effect?

The conversion of voltage to current when exposed to light

The conversion of electrical energy to mechanical energy

The tendency of a battery to discharge when used outside

E7A06: What is a characteristic of a monostable multivibrator?

It is a clock that produces a continuous square wave oscillating between 1 and 0

It stores one bit of data in either a 0 or 1 state

It maintains a constant output voltage, regardless of variations in the input voltage

E7B14: In Figure E7-2, what is the purpose of C2?

Emitter bypass

Input coupling

Hum filtering

E7C10: Which of the following filters would be the best choice for use in a 2 meter repeater duplexer?

A crystal filter

A DSP filter

An L-C filter

E7D03: What device is typically used as a stable reference voltage in a linear voltage regulator?

A tunnel diode

An SCR

A varactor diode

E7E01: Which of the following can be used to generate FM phone emissions?

A balanced modulator on the audio amplifier

A reactance modulator on the final amplifier

A balanced modulator on the oscillator

E7F09: What is the purpose of a frequency counter?

To generate a series of reference signals at known frequency intervals

To display all frequency components of a transmitted signal

To provide a signal source at a very accurate frequency

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?

28

7

0.07

E7H18: What are the major spectral impurity components of phase-locked loop synthesizers?

Digital conversion noise

Spurious signals at discrete frequencies

Nyquist limit noise

E8A14: Which of these methods is commonly used to convert analog signals to digital signals?

Harmonic regeneration

Level shifting

Phase reversal

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

E8C02: What are some of the differences between the Baudot digital code and ASCII?

Baudot uses four data bits per character, ASCII uses seven or eight; Baudot uses one character as a shift code, ASCII has no shift code

Baudot uses six data bits per character, ASCII uses seven or eight; Baudot has no shift code, ASCII uses two characters as shift codes

Baudot uses seven data bits per character, ASCII uses eight; Baudot has no shift code, ASCII uses two characters as shift codes

E8D14: Which of the following is a typical value for the peak-to-peak voltage at a standard U.S. household electrical outlet?

240 volts

120 volts

170 volts

E9A05: Which of the following factors may affect the feed point impedance of an antenna?

Transmission-line length

Constant feed point impedance

Sunspot activity and time of day

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

E9C05: What are the disadvantages of a terminated rhombic antenna for the HF bands?

The antenna has a very narrow operating bandwidth

The antenna produces a circularly polarized signal

The antenna is more sensitive to man-made static than any other type

E9D08: What happens to the bandwidth of an antenna as it is shortened through the use of loading coils?

It is increased

No change occurs

It becomes flat

E9E06: 3-element Yagi?

Pi network

Pi-L network

Parallel-resonant tank

E9F15: What impedance does a 1/2-wavelength transmission line present to a generator when the line is open at the far end?

Very low impedance

The same as the characteristic impedance of the line

The same as the output impedance of the generator

E9G06: On the Smith chart shown in Figure E9-3, what is the name for the large outer circle on which the reactance arcs terminate?

Prime axis

Impedance axis

Polar axis

E9H09: Which of the following describes the construction of a receiving loop antenna?

A large circularly-polarized antenna

A small coil of wire tightly wound around a toroidal ferrite core

A vertical antenna coupled to a feed line through an inductive loop of wire