E0A11: Which of the following injuries can result from using high-power UHF or microwave transmitters?

Hearing loss caused by high voltage corona discharge

Blood clotting from the intense magnetic field

Ingestion of ozone gas from the cooling system

E1A02: When using a transceiver that displays the carrier frequency of phone signals, which of the following displayed frequencies represents the lowest frequency at which a properly adjusted LSB emission will be totally within the band?

The exact lower band edge

300 Hz above the lower band edge

1 kHz above the lower band edge

E1B11: What is the permitted mean power of any spurious emission relative to the mean power of the fundamental emission from a station transmitter or external RF amplifier installed after January 1, 2003, and transmitting on a frequency below 30 MHZ?

At least 53 dB below

At least 63 dB below

At least 73 dB below

E1C10: What types of amateur stations may automatically retransmit the radio signals of other amateur stations?

Only beacon, repeater or space stations

Only earth stations, repeater stations or model craft

Only auxiliary, beacon or space stations

E1D05: What class of licensee is authorized to be the control operator of a space station?

All except Technician Class

Only General, Advanced or Amateur Extra Class

Only Amateur Extra Class

E1E03: What is a Volunteer Examiner Coordinator?

A person who has volunteered to administer amateur operator license examinations

A person who has volunteered to prepare amateur operator license examinations

The person who has entered into an agreement with the FCC to be the VE session manager

E1F06: What is the National Radio Quiet Zone?

An area in Puerto Rico surrounding the Aricebo Radio Telescope

An area in New Mexico surrounding the White Sands Test Area

An area in Florida surrounding Cape Canaveral

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

E2B13: How many lines are commonly used in each frame on an amateur slow-scan color television picture?

30 to 60

60 or 100

180 or 360

E2C06: During a VHF/UHF contest, in which band segment would you expect to find the highest level of activity?

At the top of each band, usually in a segment reserved for contests

In the middle of each band, usually on the national calling frequency

In the middle of the band, usually 25 kHz above the national calling frequency

E2D12: How does JT65 improve EME communications?

It controls the receiver to track Doppler shift

It supplies signals to guide the antenna to track the Moon

All of these choices are correct

E2E07: What is the typical bandwidth of a properly modulated MFSK16 signal?

31 Hz

550 Hz

2.16 kHz

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

E3B05: Which amateur bands typically support long-path propagation?

160 to 40 meters

30 to 10 meters

6 meters to 2 meters

E3C08: What is the name of the high-angle wave in HF propagation that travels for some distance within the F2 region?

Oblique-angle ray

Ordinary ray

Heaviside ray

E4A10: Which of the following tests establishes that a silicon NPN junction transistor is biased on?

Measure base-to-emitter resistance with an ohmmeter; it should be approximately

Measure base-to-emitter resistance with an ohmmeter; it should be approximately 0.6 to 0.7 ohms

Measure base-to-emitter voltage with a voltmeter; it should be approximately

E4B07: Which of the following is good practice when using an oscilloscope probe?

Never use a high impedance probe to measure a low impedance circuit

Never use a DC-coupled probe to measure an AC circuit

All of these choices are correct

E4C06: A CW receiver with the AGC off has an equivalent input noise power density of -174 dBm/Hz. What would be the level of an unmodulated carrier input to this receiver that would yield an audio output SNR of 0 dB in a 400 Hz noise bandwidth?

174 dBm

-164 dBm

-155 dBm

E4D09: What is the purpose of the preselector in a communications receiver?

To store often-used frequencies

To provide a range of AGC time constants

To allow selection of the optimum RF amplifier device

E4E02: Which of the following types of receiver noise can often be reduced with a DSP noise filter?

Broadband white noise

Ignition noise

Power line noise

E5A10: What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 1.8 MHz and a Q of 95?

1.89 kHz

94.5 kHz

9.45 kHz

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

E5D05: Which of the following creates a magnetic field?

Potential differences between two points in space

A charged capacitor

A battery

E6A04: What is the name given to an impurity atom that adds holes to a semiconductor crystal structure?

Insulator impurity

N-type impurity

Donor impurity

E6B09: What is a common use for point contact diodes?

As a constant current source

As a constant voltage source

As a high voltage rectifier

E6C10: In Figure E6-5, what is the schematic symbol for a NOR gate?

1

2

3

E6D05: What is a liquid-crystal display (LCD)?

A modern replacement for a quartz crystal oscillator which displays its fundamental frequency

A frequency-determining unit for a transmitter or receiver

A display that uses a glowing liquid to remain brightly lit in dim light

E6E06: What characteristics of the MMIC make it a popular choice for VHF through microwave circuits?

The ability to retrieve information from a single signal even in the presence of other strong signals.

Plate current that is controlled by a control grid

Nearly infinite gain, very high input impedance, and very low output impedance

E6F10: What is the most common type of photovoltaic cell used for electrical power generation?

Selenium

Cadmium Sulfide

Copper oxide

E7A03: Which of the following can divide the frequency of a pulse train by 2?

An XOR gate

An OR gate

A multiplexer

E7B19: What is a klystron?

A high speed multivibrator

An electron-coupled oscillator utilizing a pentode vacuum tube

An oscillator utilizing ceramic elements to achieve stability

E7C03: What advantage does a Pi-L-network have over a Pi-network for impedance matching between the final amplifier of a vacuum-tube transmitter and an antenna?

Higher efficiency

Lower losses

Greater transformation range

E7D14: What is one purpose of a "bleeder" resistor in a conventional (unregulated) power supply?

To cut down on waste heat generated by the power supply

To balance the low-voltage filament windings

To boost the amount of output current

E7E12: What is a frequency discriminator stage in a FM receiver?

An FM generator circuit

A circuit for filtering two closely adjacent signals

An automatic band-switching circuit

E7F04: What additional circuitry must be added to a 100-kHz crystal-controlled marker generator so as to provide markers at 50 and 25 kHz?

An emitter-follower

Two frequency multipliers

A voltage divider

E7G14: What is the typical input impedance of an integrated circuit op-amp?

100 ohms

1000 ohms

Very low

E7H10: What information is contained in the lookup table of a direct digital frequency synthesizer?

The phase relationship between a reference oscillator and the output waveform

The phase relationship between a voltage-controlled oscillator and the output waveform

The synthesizer frequency limits and frequency values stored in the radio memories

E8A13: 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

All of these choices are correct

E8B05: What is the deviation ratio of an FM-phone signal having a maximum frequency swing of plus-or-minus 5 kHz when the maximum modulation frequency is 3 kHz?

60

0.167

0.6

E8C04: What technique is used to minimize the bandwidth requirements of a PSK31 signal?

Zero-sum character encoding

Reed-Solomon character encoding

Use of trapezoidal data pulses

E8D02: What is the relationship between the peak-to-peak voltage and the peak voltage amplitude of a symmetrical waveform?

0.707:1

1.414:1

4:1

E9A11: Which of the following choices is a way to improve the efficiency of a ground-mounted quarter-wave vertical antenna?

Isolate the coax shield from ground

Shorten the radiating element

Reduce the diameter of the radiating element

E9B10: What is the principle of a Method of Moments analysis?

A wire is modeled as a single sine-wave current generator

A wire is modeled as a series of points, each having a distinct location in space

A wire is modeled as a series of segments, each having a distinct value of voltage across it

E9C10: How many elevation lobes appear in the forward direction of the antenna radiation pattern shown in Figure E9-2?

3

1

7

E9D04: Why is it desirable for a ground-mounted satellite communications antenna system to be able to move in both azimuth and elevation?

So the antenna can be pointed away from interfering signals

So the antenna can be positioned to cancel the effects of Faraday rotation

To rotate antenna polarization to match that of the satellite

E9E12: What is the primary purpose of a phasing line when used with an antenna having multiple driven elements?

It prevents reflected power from traveling back down the feed line and causing harmonic radiation from the transmitter

It allows single-band antennas to operate on other bands

It makes sure the antenna has a low-angle radiation pattern

E9F06: What is the approximate physical length of an air-insulated, parallel conductor transmission line that is electrically one-half wavelength long at 14.10 MHz?

15 meters

20 meters

71 meters

E9G05: What type of chart is shown in Figure E9-3?

Free-space radiation directivity chart

Elevation angle radiation pattern chart

Azimuth angle radiation pattern chart

E9H05: What is the main drawback of a wire-loop antenna for direction finding?

It is non-rotatable

It receives equally well in all directions

It is practical for use only on VHF bands