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

E1A10: If an amateur station is installed aboard a ship or aircraft, what condition must be met before the station is operated?

The amateur station operator must agree to not transmit when the main ship or aircraft radios are in use

It must have a power supply that is completely independent of the main ship or aircraft power supply

Its operator must have an FCC Marine or Aircraft endorsement on his or her amateur license

E1B10: What frequencies are authorized to an amateur station participating in RACES?

Specific segments in the amateur service MF, HF, VHF and UHF bands

Specific local government channels

Military Affiliate Radio System (MARS) channels

E1C03: How do the control operator responsibilities of a station under automatic control differ from one under local control?

Under local control there is no control operator

Under automatic control there is no control operator

Under local control a control operator is not required to be present at a control point

E1D09: Which amateur service UHF bands have frequencies available for a space station?

70 cm

70 cm and 33 cm

33 cm and 13 cm

E1E13: What are the consequences of failing to appear for re-administration of an examination when so directed by the FCC?

The person may be fined or imprisoned

The licensee is disqualified from any future examination for an amateur operator license grant

All these choices are correct

E1F04: Which of the following geographic descriptions approximately describes "Line A"?

A line roughly parallel to and west of the US Atlantic coastline

A line roughly parallel to and north of the US-Mexican border and Gulf coastline

A line roughly parallel to and east of the US Pacific coastline

E2A04: What is meant by the term mode as applied to an amateur radio satellite?

The type of signals that can be relayed through the satellite

The satellite's orientation with respect to the Earth

Whether the satellite is in a polar or equatorial orbit

E2B15: What signals SSTV receiving equipment to begin a new picture line?

Elapsed time

Specific tone amplitudes

A two-tone signal

E2C10: Why might a DX station state that they are listening on another frequency?

Because the DX station may be transmitting on a frequency that is prohibited to some responding stations

To separate the calling stations from the DX station

To reduce interference, thereby improving operating efficiency

E2D07: Which of the following digital protocols is used by APRS?

PACTOR

802.11

AMTOR

E2E12: Which type of digital communication does not support keyboard-to-keyboard operation?

RTTY

PSK31

MFSK

E3A02: What characterizes libration fading of an Earth-Moon-Earth signal?

A slow change in the pitch of the CW signal

A gradual loss of signal as the Sun rises

The returning echo is several Hertz lower in frequency than the transmitted signal

E3B08: What type of HF propagation is probably occurring if radio signals travel along the terminator between daylight and darkness?

Transequatorial

Sporadic-E

Long-path

E3C07: How does the radiation pattern of a horizontally polarized 3-element beam antenna vary with its height above ground?

The main lobe takeoff angle increases with increasing height

The horizontal beam width increases with height

The horizontal beam width decreases with height

E4A11: Which of these instruments could be used for detailed analysis of digital signals?

Dip meter

Ohmmeter

Q meter

E4B10: Which of the following describes a method to measure intermodulation distortion in an SSB transmitter?

Modulate the transmitter with two non-harmonically related radio frequencies and observe the RF output with a spectrum analyzer

Modulate the transmitter with two harmonically related audio frequencies and observe the RF output with a peak reading wattmeter

Modulate the transmitter with two harmonically related audio frequencies and observe the RF output with a logic analyzer

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 noise figure of a 1 Hz bandwidth receiver

The galactic noise contribution to minimum detectable signal

E4D07: Which of the following describes the most significant effect of an off-frequency signal when it is causing cross-modulation interference to a desired signal?

A large increase in background noise

A reduction in apparent signal strength

The desired signal can no longer be heard

E4E06: What is a major cause of atmospheric static?

Solar radio frequency emissions

Geomagnetic storms

Meteor showers

E5A01: What can cause the voltage across reactances in series to be larger than the voltage applied to them?

Capacitance

Conductance

Resistance

E5B08: What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 100 ohms, R is 100 ohms, and XL is 75 ohms?

14 degrees with the voltage leading the current

76 degrees with the voltage leading the current

76 degrees with the voltage lagging the current

E5C08: In polar coordinates, what is the impedance of a network comprised of a 300-ohm-reactance inductor in series with a 400-ohm resistor?

400 ohms at an angle of 27 degrees

500 ohms at an angle of 47 degrees

700 ohms at an angle of 57 degrees

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 dissipated as kinetic energy in the circuit

It is dissipated in the formation of inductive and capacitive fields

E6A05: What is the alpha of a bipolar junction transistor?

The change of collector current with respect to base current

The change of base current with respect to collector current

The change of collector current with respect to gate current

E6B02: What is an important characteristic of a Schottky diode as compared to an ordinary silicon diode when used as a power supply rectifier?

Much higher reverse voltage breakdown

Controlled reverse avalanche voltage

Enhanced carrier retention time

E6C12: What is BiCMOS logic?

A logic device with two CMOS circuits per package

An FET logic family based on bimetallic semiconductors

A logic family based on bismuth CMOS devices

E6D08: What is one important reason for using powdered-iron toroids rather than ferrite toroids in an inductor?

Powdered-iron toroids generally have greater initial permeability

Powdered-iron toroids generally require fewer turns to produce a given inductance value

Powdered-iron toroids have higher power handling capacity

E6E11: Which of the following materials is likely to provide the highest frequency of operation when used in MMICs?

Silicon

Silicon nitride

Silicon dioxide

E6F09: What is the efficiency of a photovoltaic cell?

The output RF power divided by the input dc power

The effective payback period

The open-circuit voltage divided by the short-circuit current under full illumination

E7A08: What logical operation does an OR gate perform?

It produces a logic "0" at its output if all inputs are logic "1"

It only produces a logic "0" at its output when all inputs are logic "1"

It produces a logic "1" at its output if all inputs are logic "0"

E7B07: Which of the following is a likely result when a Class C amplifier is used to amplify a single-sideband phone signal?

Reduced intermodulation products

Increased overall intelligibility

Signal inversion

E7C11: Which of the following is the common name for a filter network which is equivalent to two L networks connected back-to-back with the inductors in series and the capacitors in shunt at the input and output?

Pi-L

Cascode

Omega

E7D11: What is the purpose of R1 in the circuit shown in Figure E7-3?

It provides a constant load to the voltage source

It couples hum to D1

It bypasses hum around D1

E7E10: How does a diode detector function?

By breakdown of the Zener voltage

By mixing signals with noise in the transition region of the diode

By sensing the change of reactance in the diode with respect to frequency

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

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

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 hybrid synthesizer

A phase locked loop synthesizer

A diode-switching matrix synthesizer

E8A12: What type of information can be conveyed using digital waveforms?

Human speech

Video signals

Data

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

E8C01: Which one of the following digital codes consists of elements having unequal length?

ASCII

AX.25

Baudot

E8D07: What is an electromagnetic wave?

Alternating currents in the core of an electromagnet

A wave consisting of two electric fields at right angles to each other

A wave consisting of two magnetic fields at right angles to each other

E9A14: How much gain does an antenna have compared to a 1/2-wavelength dipole when it has 12 dB gain over an isotropic antenna?

6.17 dB

12.5 dB

14.15 dB

E9B01: In the antenna radiation pattern shown in Figure E9-1, what is the 3-dB beamwidth?

75 degrees

25 degrees

30 degrees

E9C11: How is the far-field elevation pattern of a vertically polarized antenna affected by being mounted over seawater versus rocky ground?

The low-angle radiation decreases

The high-angle radiation increases

Both the high- and low-angle radiation decrease

E9D11: What is the function of a loading coil as used with an HF mobile antenna?

To increase the SWR bandwidth

To lower the losses

To lower the Q

E9E06: 3-element Yagi?

Pi network

Pi-L network

Parallel-resonant tank

E9F12: What impedance does a 1/4-wavelength transmission line present to a generator when the line is open at the far end?

The same as the characteristic impedance of the line

The same as the input impedance to the generator

Very high impedance

E9G09: What third family of circles is often added to a Smith chart during the process of solving problems?

Antenna-length circles

Coaxial-length circles

Radiation-pattern circles

E9H02: What is the effective radiated power relative to a dipole of a repeater station with 200 watts transmitter power output, 4-dB feed line loss, 3.2-dB duplexer loss, 0.8-dB circulator loss and 10-dBd antenna gain?

2000 watts

126 watts

300 watts