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

E1A06: Which of the following describes the rules for operation on the 60 meter band?

Working DX is not permitted

Operation is restricted to LSB

All of these choices are correct

E1B03: Within what distance must an amateur station protect an FCC monitoring facility from harmful interference?

3 miles

10 miles

30 miles

E1C01: What is a remotely controlled station?

A station operated away from its regular home location

A station controlled by someone other than the licensee

A station operating under automatic control

E1D03: What is a telecommand station in the amateur satellite service?

An amateur station located on the Earth's surface for communications with other Earth stations by means of Earth satellites

An amateur station located more than 50 km above the Earth's surface

An amateur station that transmits telemetry consisting of measurements of upper atmosphere data from space

E1E01: What is the minimum number of qualified VEs required to administer an Element 4 amateur operator license examination?

5

2

4

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

E2A01: What is the direction of an ascending pass for an amateur satellite?

From west to east

From east to west

From north to south

E2B05: Which of the following is an advantage of using vestigial sideband for standard fast- scan TV transmissions?

The vestigial sideband carries the audio information

The vestigial sideband contains chroma information

Vestigial sideband provides high frequency emphasis to sharpen the picture

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

E2D06: Which of the following is a commonly used 2-meter APRS frequency?

144.20 MHz

145.02 MHz

146.52 MHz

E2E04: What is indicated when one of the ellipses in an FSK crossed-ellipse display suddenly disappears?

One of the signal filters has saturated

The receiver has drifted 5 kHz from the desired receive frequency

The mark and space signal have been inverted

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

E3B09: At what time of day is gray-line propagation most likely to occur?

When the Sun is directly above the location of the transmitting station

When the Sun is directly overhead at the middle of the communications path between the two stations

When the Sun is directly above the location of the receiving station

E3C02: What is the cause of Aurora activity?

The interaction between the solar wind and the Van Allen belt

A low sunspot level combined with tropospheric ducting

Meteor showers concentrated in the northern latitudes

E4A08: Which of the following instruments would be best for measuring the SWR of a beam antenna?

A spectrum analyzer

A Q meter

An ohmmeter

E4B12: What is the significance of voltmeter sensitivity expressed in ohms per volt?

When used as a galvanometer, the reading in volts multiplied by the ohms/volt will determine the power drawn by the device under test

When used as an ohmmeter, the reading in ohms divided by the ohms/volt will determine the voltage applied to the circuit

When used as an ammeter, the full scale reading in amps divided by ohms/volt will determine the size of shunt needed

E4C02: Which of the following portions of a receiver can be effective in eliminating image signal interference?

A narrow IF filter

A notch filter

A properly adjusted product detector

E4D04: Which of the following may reduce or eliminate intermodulation interference in a repeater caused by another transmitter operating in close proximity?

A band-pass filter in the feed line between the transmitter and receiver

A Class C final amplifier

A Class D final amplifier

E4E03: Which of the following signals might a receiver noise blanker be able to remove from desired signals?

Signals which are constant at all IF levels

Signals which appear at one IF but not another

Signals which have a sharply peaked frequency distribution

E5A13: What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 14.25 MHz and a Q of 187?

38.1 kHz

1.332 kHz

2.665 kHz

E5B04: What is the time constant of a circuit having two 220-microfarad capacitors and two 1-megohm resistors, all in parallel?

55 seconds

110 seconds

440 seconds

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

E5D01: What is the result of skin effect?

As frequency decreases, RF current flows in a thinner layer of the conductor, closer to the surface

Thermal effects on the surface of the conductor increase the impedance

Thermal effects on the surface of the conductor decrease the impedance

E6A08: What term indicates the frequency at which the grounded-base current gain of a transistor has decreased to 0.7 of the gain obtainable at 1 kHz?

Corner frequency

Alpha rejection frequency

Beta cutoff frequency

E6B01: What is the most useful characteristic of a Zener diode?

A constant current drop under conditions of varying voltage

A negative resistance region

An internal capacitance that varies with the applied voltage

E6C08: In Figure E6-5, what is the schematic symbol for a NAND gate?

1

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

E6E10: What is the equivalent circuit of a quartz crystal?

Motional capacitance, motional inductance, loss resistance, and a capacitor representing electrode and stray capacitance all in parallel

Motional capacitance, motional inductance, loss resistance, and a capacitor represent electrode and stray capacitance all in series

Motional inductance and loss resistance in series, paralleled with motional capacitance and a capacitor representing electrode and stray capacitance

E6F02: What happens to the conductivity of a photoconductive material when light shines on it?

It decreases

It stays the same

It becomes unstable

E7A02: How many output level changes are obtained for every two trigger pulses applied to the input of a T flip-flop circuit?

None

One

Four

E7B04: Where on the load line of a Class A common emitter amplifier would bias normally be set?

Where the load line intersects the voltage axis

At a point where the bias resistor equals the load resistor

At a point where the load line intersects the zero bias current curve

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

E7D09: What is the purpose of C1 in the circuit shown in Figure E7-3?

It resonates at the ripple frequency

It provides fixed bias for Q1

It decouples the output

E7E06: Why is de-emphasis commonly used in FM communications receivers?

To reduce impulse noise reception

For higher efficiency

To remove third-order distortion products

E7F10: What alternate method of determining frequency, other than by directly counting input pulses, is used by some counters?

GPS averaging

Prescaling

D/A conversion

E7G06: Which of the following is the most appropriate use of an op-amp active filter?

As a high-pass filter used to block RFI at the input to receivers

As a low-pass filter used between a transmitter and a transmission line

For smoothing power-supply output

E7H12: Which of the following is a principal component of a direct digital synthesizer (DDS)?

Phase splitter

Hex inverter

Chroma demodulator

E8A08: What is the period of a wave?

The number of degrees in one cycle

The number of zero crossings in one cycle

The amplitude of the wave

E8B04: What is the modulation index of an FM-phone signal having a maximum carrier deviation of plus or minus 6 kHz when modulated with a 2-kHz modulating frequency?

6000

2000

1/3

E8C03: What is one advantage of using the ASCII code for data communications?

It includes built-in error-correction features

It contains fewer information bits per character than any other code

It uses one character as a shift code to send numeric and special characters

E8D12: What is the peak voltage of a sinusoidal waveform if an RMS-reading voltmeter reads 34 volts?

123 volts

96 volts

55 volts

E9A08: What is meant by antenna gain?

The ratio of the signal in the forward direction to that in the opposite direction

The ratio of the amount of power radiated by an antenna compared to the transmitter output power

The final amplifier gain minus the transmission-line losses, including any phasing lines present

E9B06: If the boom of a Yagi antenna is lengthened and the elements are properly retuned, what usually occurs?

The SWR decreases

The front-to-back ratio increases

The gain bandwidth decreases rapidly

E9C09: What is the front-to-back ratio of the radiation pattern shown in Figure E9-2?

15 dB

3 dB

24 dB

E9D06: Why should an HF mobile antenna loading coil have a high ratio of reactance to resistance?

To swamp out harmonics

To maximize losses

To minimize the Q

E9E06: 3-element Yagi?

Pi network

Pi-L network

Parallel-resonant tank

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

E9G07: On the Smith chart shown in Figure E9-3, what is the only straight line shown?

The reactance axis

The current axis

The voltage axis

E9H04: What term describes station output, including the transmitter, antenna and everything in between, when considering transmitter power and system gains and losses?

Power factor

Half-power bandwidth

Apparent power