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

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

E1B08: What limitations may the FCC place on an amateur station if its signal causes interference to domestic broadcast reception, assuming that the receiver(s) involved are of good engineering design?

The amateur station must cease operation

The amateur station must cease operation on all frequencies below 30 MHz

The amateur station must cease operation on all frequencies above 30 MHz

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

E1D08: Which VHF amateur service bands have frequencies available for space stations?

6 meters and 2 meters

6 meters, 2 meters, and 1.25 meters

2 meters and 1.25 meters

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

5

2

4

E1F11: Which of the following best describes one of the standards that must be met by an external RF power amplifier if it is to qualify for a grant of FCC certification?

It must produce full legal output when driven by not more than 5 watts of mean RF input power

It must be capable of external RF switching between its input and output networks

It must exhibit a gain of 0 dB or less over its full output range

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

E2B03: How is an interlaced scanning pattern generated in a fast-scan (NTSC) television system?

By scanning two fields simultaneously

By scanning each field from bottom to top

By scanning lines from left to right in one field and right to left in the next

E2C09: How does the spread-spectrum technique of frequency hopping work?

If interference is detected by the receiver it will signal the transmitter to change frequencies

If interference is detected by the receiver it will signal the transmitter to wait until the frequency is clear

A pseudo-random binary bit stream is used to shift the phase of an RF carrier very rapidly in a particular sequence

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

FSK441

PACTOR III

Olivia

E2E09: Which of the following HF digital modes uses variable-length coding for bandwidth efficiency?

RTTY

PACTOR

MT63

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

E3B04: What type of propagation is probably occurring if an HF beam antenna must be pointed in a direction 180 degrees away from a station to receive the strongest signals?

Sporadic-E

Transequatorial

Auroral

E3C04: Which emission mode is best for Aurora propagation?

SSB

FM

RTTY

E4A03: Which of the following parameters would a spectrum analyzer display on the vertical axis?

Duration

SWR

Q

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

E4C08: How might lowering the noise figure affect receiver performance?

It would reduce the signal to noise ratio

It would reduce bandwidth

It would increase bandwidth

E4D13: Which of the following can cause receiver desensitization?

Audio gain adjusted too low

Audio bias adjusted too high

Squelch gain misadjusted

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

E5A16: What is the resonant frequency of a parallel RLC circuit if R is 33 ohms, L is 50 microhenrys and C is 10 picofarads?

23.5 MHz

23.5 kHz

7.12 kHz

E5B05: How long does it take for an initial charge of 20 V DC to decrease to 7.36 V DC in a 0.01-microfarad capacitor when a 2-megohm resistor is connected across it?

0.04 seconds

20 seconds

40 seconds

E5C04: In polar coordinates, what is the impedance of a network consisting of a 400-ohm-reactance capacitor in series with a 300-ohm resistor?

240 ohms at an angle of 36.9 degrees

240 ohms at an angle of -36.9 degrees

500 ohms at an angle of 53.1 degrees

E5D05: Which of the following creates a magnetic field?

Potential differences between two points in space

A charged capacitor

A battery

E6A03: What are the majority charge carriers in P-type semiconductor material?

Free neutrons

Free protons

Free electrons

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

E6C02: What logic state do the inputs of a TTL device assume if they are left open?

A logic-low state

The device becomes randomized and will not provide consistent high or low-logic states

Open inputs on a TTL device are ignored

E6D16: What is one reason for using ferrite toroids rather than powdered-iron toroids in an inductor?

Ferrite toroids generally have lower initial permeabilities

Ferrite toroids generally have better temperature stability

Ferrite toroids are easier to use with surface mount technology

E6E07: Which of the following techniques is typically used to construct a MMIC-based microwave amplifier?

Ground-plane construction

Point-to-point construction

Wave-soldering construction

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

An ordinary metal

A heavy metal

A liquid semiconductor

E7A12: What is the name for logic which represents a logic "0" as a high voltage?

Reverse Logic

Assertive Logic

Positive Logic

E7B16: What is the effect of intermodulation products in a linear power amplifier?

Creation of parasitic oscillations

Low efficiency

All of these choices are correct

E7C12: Which of the following describes a Pi-L network used for matching a vacuum-tube final amplifier to a 50-ohm unbalanced output?

A Phase Inverter Load network

A network with only three discrete parts

A matching network in which all components are isolated from ground

E7D10: What is the purpose of C3 in the circuit shown in Figure E7-3?

It provides brute force filtering of the output

It provides fixed bias for Q1

It clips the peaks of the ripple

E7E09: What occurs when an excessive amount of signal energy reaches a mixer circuit?

Mixer blanking occurs

Automatic limiting occurs

A beat frequency is generated

E7F01: What is the purpose of a prescaler circuit?

It converts the output of a JK flip flop to that of an RS flip-flop

It multiplies a higher frequency signal so a low-frequency counter can display the operating frequency

It prevents oscillation in a low-frequency counter circuit

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

E8A11: What is one use for a pulse modulated signal?

Linear amplification

PSK31 data transmission

Multiphase power transmission

E8B03: What is the modulation index of an FM-phone signal having a maximum frequency deviation of 3000 Hz either side of the carrier frequency, when the modulating frequency is 1000 Hz?

0.3

3000

1000

E8C09: Which of these techniques causes a digital signal to appear as wide-band noise to a conventional receiver?

Independent sideband

Regenerative detection

Exponential addition

E8D05: If an RMS-reading AC voltmeter reads 65 volts on a sinusoidal waveform, what is the peak-to-peak voltage?

46 volts

92 volts

130 volts

E9A05: Which of the following factors may affect the feed point impedance of an antenna?

Transmission-line length

Constant feed point impedance

Sunspot activity and time of day

E9B03: In the antenna radiation pattern shown in Figure E9-1, what is the front-to-side ratio?

12 dB

18 dB

24 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

E9D01: How does the gain of an ideal parabolic dish antenna change when the operating frequency is doubled?

Gain does not change

Gain is multiplied by 0.707

Gain increases by 3 dB

E9E13: What is the purpose of a Wilkinson divider?

It divides the operating frequency of a transmitter signal so it can be used on a lower frequency band

It is used to feed high-impedance antennas from a low-impedance source

It is used to feed low-impedance loads from a high-impedance source

E9F08: What is the term for the ratio of the actual speed at which a signal travels through a transmission line to the speed of light in a vacuum?

Characteristic impedance

Surge impedance

Standing wave ratio

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

E9H10: How can the output voltage of a multi-turn receiving loop antenna be increased?

By reducing the permeability of the loop shield

By increasing the number of wire turns in the loop and reducing the area of the loop structure

By winding adjacent turns in opposing directions