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

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

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

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

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

E1E10: What must the administering VEs do after the administration of a successful examination for an amateur operator license?

They must collect and send the documents to the NCVEC for grading

They must collect and submit the documents to the coordinating VEC for grading

They must collect and send the documents to the FCC according to instructions

E1F03: Under what circumstances may a dealer sell an external RF power amplifier capable of operation below 144 MHz if it has not been granted FCC certification?

The equipment dealer assembled it from a kit

It was imported from a manufacturer in a country that does not require certification of RF power amplifiers

It was imported from a manufacturer in another country, and it was certificated by that country's government

E2A12: What is one way to predict the location of a satellite at a given time?

By means of the Doppler data for the specified satellite

By subtracting the mean anomaly from the orbital inclination

By adding the mean anomaly to the orbital inclination

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

E2D08: Which of the following types of packet frames is used to transmit APRS beacon data?

Disconnect

Acknowledgement

Connect

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

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

E3B01: What is transequatorial propagation?

Propagation between any two points located on the magnetic equator

Propagation between two continents by way of ducts along the magnetic equator

Propagation between two stations at the same latitude

E3C05: Which of the following describes selective fading?

Variability of signal strength with beam heading

Sideband inversion within the ionosphere

Degradation of signal strength due to backscatter

E4A04: Which of the following test instruments is used to display spurious signals from a radio transmitter?

A wattmeter

A logic analyzer

A time-domain reflectometer

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

E4C09: Which of the following choices is a good reason for selecting a high frequency for the design of the IF in a conventional HF or VHF communications receiver?

Fewer components in the receiver

Reduced drift

Improved receiver noise figure

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

E4E10: What is a common characteristic of interference caused by a touch controlled electrical device?

The interfering signal sounds like AC hum on an AM receiver or a carrier modulated by 60 Hz hum on a SSB or CW receiver

The interfering signal may drift slowly across the HF spectrum

The interfering signal can be several kHz in width and usually repeats at regular intervals across a HF band

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

Capacitance

Conductance

Resistance

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

E5C14: What coordinate system is often used to display the phase angle of a circuit containing resistance, inductive and/or capacitive reactance?

Maidenhead grid

Faraday grid

Elliptical coordinates

E5D15: What is the power factor of an RL circuit having a 45 degree phase angle between the voltage and the current?

0.866

1.0

0.5

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

E6B07: What is the failure mechanism when a junction diode fails due to excessive current?

Excessive inverse voltage

Insufficient forward voltage

Charge carrier depletion

E6C09: In Figure E6-5, what is the schematic symbol for an OR gate?

2

4

6

E6D04: What function does a charge-coupled device (CCD) serve in a modern video camera?

It generates the horizontal pulses needed for electron beam scanning

It focuses the light used to produce a pattern of electrical charges corresponding to the image

It combines audio and video information to produce a composite RF signal

E6E09: Which of the following must be done to insure that a crystal oscillator provides the frequency specified by the crystal manufacturer?

Provide the crystal with a specified parallel inductance

Bias the crystal at a specified voltage

Bias the crystal at a specified current

E6F06: Which of these materials is affected the most by photoconductivity?

An ordinary metal

A heavy metal

A liquid semiconductor

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

E7B06: Which of the following amplifier types reduces or eliminates even-order harmonics?

Push-push

Class C

Class AB

E7C09: What type of digital signal processing filter might be used to generate an SSB signal?

An adaptive filter

A notch filter

An elliptical filter

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

E7E11: Which of the following types of detector is well suited for demodulating SSB signals?

Discriminator

Phase detector

Phase comparator

E7F02: Which of the following would be used to reduce a signal's frequency by a factor of ten?

A preamp

A marker generator

A flip-flop

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

E7H04: How is positive feedback supplied in a Colpitts oscillator?

Through a tapped coil

Through link coupling

Through a neutralizing capacitor

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

Harmonic regeneration

Level shifting

Phase reversal

E8B12: What is digital time division multiplexing?

Two or more data streams are assigned to discrete sub-carriers on an FM transmitter

Two or more data streams share the same channel by transmitting time of transmission as the sub-carrier

Two or more signals are quadrature modulated to increase bandwidth efficiency

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

E8D16: What is the RMS value of a 340-volt peak-to-peak pure sine wave?

170V AC

240V AC

300V AC

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

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

36 dB

24 dB

14 dB

E9C08: What is the elevation angle of peak response in the antenna radiation pattern shown in Figure E9-2?

45 degrees

75 degrees

25 degrees

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

Lower Q

Greater structural strength

Higher losses

E9E08: Which of the following measurements is characteristic of a mismatched transmission line?

An SWR less than 1:1

A reflection coefficient greater than 1

A dielectric constant greater than 1

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

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

E9H11: What characteristic of a cardioid-pattern antenna is useful for direction finding?

A very sharp peak

Broad band response

High-radiation angle