E0A07: How may dangerous levels of carbon monoxide from an emergency generator be detected?

By the odor

Any ordinary smoke detector can be used

By the yellowish appearance of the gas

E1A01: When using a transceiver that displays the carrier frequency of phone signals, which of the following displayed frequencies represents the highest frequency at which a properly adjusted USB emission will be totally within the band?

The exact upper band edge

300 Hz below the upper band edge

1 kHz below the upper band edge

E1B05: What is the maximum bandwidth for a data emission on 60 meters?

60 Hz

170 Hz

1.5 kHz

E1C07: What is meant by local control?

Controlling a station through a local auxiliary link

Automatically manipulating local station controls

Controlling a repeater using a portable handheld transceiver

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

E1E04: Which of the following best describes the Volunteer Examiner accreditation process?

Each General, Advanced and Amateur Extra Class operator is automatically accredited as a VE when the license is granted

The amateur operator applying must pass a VE examination administered by the FCC Enforcement Bureau

The prospective VE obtains accreditation from the FCC

E1F12: Who may be the control operator of an auxiliary station?

Any licensed amateur operator

Only General, Advanced or Amateur Extra Class operators

Only Amateur Extra Class operators

E2A02: What is the direction of a descending pass for an amateur satellite?

From west to east

From east to west

From south to north

E2B01: How many times per second is a new frame transmitted in a fast-scan (NTSC) television system?

60

90

120

E2C11: How should you generally identify your station when attempting to contact a DX station working a pileup or in a contest?

Send only the last two letters of your call sign until you make contact

Send your full call sign and grid square

Send the call sign of the DX station three times, the words this is, then your call sign three times

E2D03: Which of the following digital modes is especially useful for EME communications?

FSK441

PACTOR III

Olivia

E2E05: How does ARQ accomplish error correction?

Special binary codes provide automatic correction

Special polynomial codes provide automatic correction

If errors are detected, redundant data is substituted

E3A05: Which of the following describes a method of establishing EME contacts?

Storing and forwarding digital messages

Judging optimum transmission times by monitoring beacons from the Moon

High speed CW identification to avoid fading

E3B07: Which of the following could account for hearing an echo on the received signal of a distant station?

High D layer absorption

Meteor scatter

Transmit frequency is higher than the MUF

E3C06: By how much does the VHF/UHF radio-path horizon distance exceed the geometric horizon?

By approximately twice the distance

By approximately one-half the distance

By approximately four times the distance

E4A09: Which of the following describes a good method for measuring the intermodulation distortion of your own PSK signal?

Multiply the ALC level on the transmitter during a normal transmission by the average power output

Use an RF voltmeter coupled to the transmitter output using appropriate isolation to prevent damage to the meter

All of these choices are correct

E4B09: What is indicated if the current reading on an RF ammeter placed in series with the antenna feed line of a transmitter increases as the transmitter is tuned to resonance?

There is possibly a short to ground in the feed line

The transmitter is not properly neutralized

There is an impedance mismatch between the antenna and feed line

E4C04: What is the definition of the noise figure of a receiver?

The ratio of atmospheric noise to phase noise

The noise bandwidth in Hertz compared to the theoretical bandwidth of a resistive network

The ratio of thermal noise to atmospheric noise

E4D11: Why are third-order intermodulation products created within a receiver of particular interest compared to other products?

The third-order intercept is much higher than other orders

Third-order products are an indication of poor image rejection

Third-order intermodulation produces three products for every input signal within the band of interest

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 observing the AC power line voltage with a spectrum analyzer

E5A09: What is the phase relationship between the current through and the voltage across a parallel 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 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

E5C11: What do the two numbers represent that are used to define a point on a graph using rectangular coordinates?

The magnitude and phase of the point

The sine and cosine values

The tangent and cotangent values

E5D03: What device is used to store electrical energy in an electrostatic field?

A battery

A transformer

An inductor

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

E6B08: Which of the following describes a type of semiconductor diode?

Electrolytic rectifier

CMOS-field effect

Thermionic emission diode

E6C07: In Figure E6-5, what is the schematic symbol for an AND gate?

2

3

4

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

E6E02: Which of the following factors has the greatest effect in helping determine the bandwidth and response shape of a crystal ladder filter?

The DC voltage applied to the quartz crystal

The gain of the RF stage preceding the filter

The amplitude of the signals passing through the filter

E6F12: What absorbs the energy from light falling on a photovoltaic cell?

Protons

Photons

Holes

E7A05: Which of the following is a circuit that continuously alternates between two states without an external clock?

Monostable multivibrator

J-K flip-flop

T flip-flop

E7B13: In Figure E7-2, what is the purpose of R?

Fixed bias

Collector load

Voltage regulation

E7C08: What kind of digital signal processing audio filter might be used to remove unwanted noise from a received SSB signal?

A crystal-lattice filter

A Hilbert-transform filter

A phase-inverting filter

E7D08: What type of circuit is shown in Figure E7-3?

Switching voltage regulator

Grounded emitter amplifier

Emitter follower

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

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

E7G05: How can unwanted ringing and audio instability be prevented in a multi-section op-amp RC audio filter circuit?

Restrict gain, but increase Q

Restrict Q, but increase gain

Increase both gain and Q

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

Digital conversion noise

Spurious signals at discrete frequencies

Nyquist limit noise

E8A05: What would be the most accurate way of measuring the RMS voltage of a complex waveform?

By using a grid dip meter

By measuring the voltage with a D'Arsonval meter

By using an absorption wavemeter

E8B06: What is the deviation ratio of an FM-phone signal having a maximum frequency swing of plus or minus 7.5 kHz when the maximum modulation frequency is 3.5 kHz?

0.214

0.47

47

E8C10: What spread-spectrum communications technique alters the center frequency of a conventional carrier many times per second in accordance with a pseudo-random list of channels?

Direct sequence

Time-domain frequency modulation

Frequency compandored spread-spectrum

E8D11: What is the average power dissipated by a 50-ohm resistive load during one complete RF cycle having a peak voltage of 35 volts?

9.9 watts

24.5 watts

16 watts

E9A07: What is a folded dipole antenna?

A dipole one-quarter wavelength long

A type of ground-plane antenna

A dipole configured to provide forward gain

E9B02: In the antenna radiation pattern shown in Figure E9-1, what is the front-to-back ratio?

36 dB

24 dB

14 dB

E9C13: What is the main effect of placing a vertical antenna over an imperfect ground?

It causes increased SWR

It changes the impedance angle of the matching network

It reduces losses in the radiating portion of the antenna

E9D09: What is an advantage of using top loading in a shortened HF vertical antenna?

Lower Q

Greater structural strength

Higher losses

E9E11: What is an effective way of matching a feed line to a VHF or UHF antenna when the impedances of both the antenna and feed line are unknown?

Use a 50-ohm 1:1 balun between the antenna and feed line

Connect a series-resonant LC network across the antenna feed terminals

Connect a parallel-resonant LC network across the antenna feed terminals

E9F09: What is the approximate physical length of a solid polyethylene dielectric coaxial transmission line that is electrically one-quarter wavelength long at 7.2 MHz?

10 meters

24 meters

50 meters

E9G08: What is the process of normalization with regard to a Smith chart?

Reassigning resistance values with regard to the reactance axis

Reassigning reactance values with regard to the resistance axis

Reassigning prime center with regard to the reactance axis

E9H01: What is the effective radiated power relative to a dipole of a repeater station with 150 watts transmitter power output, 2-dB feed line loss, 2.2-dB duplexer loss and 7-dBd antenna gain?

1977 watts

78.7 watts

420 watts