E0A09: Which insulating material commonly used as a thermal conductor for some types of electronic devices is extremely toxic if broken or crushed and the particles are accidentally inhaled?

Mica

Zinc oxide

Uranium Hexaflouride

E1A07: What is the only amateur band where transmission on specific channels rather than a range of frequencies is permitted?

12 meter band

17 meter band

30 meter band

E1B02: Which of the following factors might cause the physical location of an amateur station apparatus or antenna structure to be restricted?

The location is near an area of political conflict

The location is of geographical or horticultural importance

The location is in an ITU zone designated for coordination with one or more foreign governments

E1C02: What is meant by automatic control of a station?

A station operating with its output power controlled automatically

Remotely controlling a station's antenna pattern through a directional control link

The use of a control link between a control point and a locally controlled station

E1D02: What is the amateur satellite service?

A radio navigation service using satellites for the purpose of self training, intercommunication and technical studies carried out by amateurs

A spacecraft launching service for amateur-built satellites

A radio communications service using stations on Earth satellites for public service broadcast

E1E02: Where are the questions for all written US amateur license examinations listed?

In FCC Part 97

In a question pool maintained by the FCC

In the appropriate FCC Report and Order

E1F02: Which of the following operating arrangements allows an FCC-licensed US citizen to operate in many European countries, and alien amateurs from many European countries to operate in the US?

IARP agreement

ITU reciprocal license

All of these choices are correct

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

E2B16: Which of the following is the video standard used by North American Fast Scan ATV stations?

PAL

DRM

Scottie

E2C10: Why might a DX station state that they are listening on another frequency?

Because the DX station may be transmitting on a frequency that is prohibited to some responding stations

To separate the calling stations from the DX station

To reduce interference, thereby improving operating efficiency

E2D01: Which of the following digital modes is especially designed for use for meteor scatter signals?

WSPR

Hellschreiber

APRS

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

31 Hz

550 Hz

2.16 kHz

E3A01: What is the approximate maximum separation measured along the surface of the Earth between two stations communicating by Moon bounce?

500 miles, if the Moon is at perigee

2000 miles, if the Moon is at apogee

5000 miles, if the Moon is at perigee

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

E4A02: Which of the following parameters would a spectrum analyzer display on the horizontal axis?

SWR

Q

Time

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

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

E4E08: What type of signal is picked up by electrical wiring near a radio antenna?

An electrical-sparking signal

A differential-mode signal at the AC power line frequency

Harmonics of the AC power line frequency

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

E5B13: What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 250 ohms, R is 1 kilohm, and XL is 500 ohms?

81.47 degrees with the voltage lagging the current

81.47 degrees with the voltage leading the current

14.04 degrees with the voltage lagging the current

E5C02: In polar coordinates, what is the impedance of a network consisting of a 100-ohm-reactance inductor, a 100-ohm-reactance capacitor, and a 100-ohm resistor, all connected in series?

100 ohms at an angle of 90 degrees

10 ohms at an angle of 0 degrees

10 ohms at an angle of 90 degrees

E5D12: How many watts are consumed in a circuit having a power factor of 0.2 if the input is 100-V AC at 4 amperes?

400 watts

2000 watts

50 watts

E6A11: In Figure E6-2, what is the schematic symbol for a P-channel junction FET?

2

3

6

E6B11: What is used to control the attenuation of RF signals by a PIN diode?

A sub-harmonic pump signal

Reverse voltage larger than the RF signal

Capacitance of an RF coupling capacitor

E6C04: Which of the following is the primary advantage of tri-state logic?

Low power consumption

High speed operation

More efficient arithmetic operations

E6D07: What is the usable frequency range of inductors that use toroidal cores, assuming a correct selection of core material for the frequency being used?

From a few kHz to no more than 30 MHz

From approximately 10 Hz to no more than 3000 kHz

From about 100 kHz to at least 1000 GHz

E6E05: Which of the following noise figure values is typical of a low-noise UHF preamplifier?

-10 dB

44 dBm

-20 dBm

E6F03: What is the most common configuration of an optoisolator or optocoupler?

A lens and a photomultiplier

A frequency modulated helium-neon laser

An amplitude modulated helium-neon laser

E7A08: What logical operation does an OR gate perform?

It produces a logic "0" at its output if all inputs are logic "1"

It only produces a logic "0" at its output when all inputs are logic "1"

It produces a logic "1" at its output if all inputs are logic "0"

E7B10: In Figure E7-1, what is the purpose of R1 and R2?

Load resistors

Self bias

Feedback

E7C05: Which filter type is described as having ripple in the passband and a sharp cutoff?

A Butterworth filter

An active LC filter

A passive op-amp filter

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

Switching voltage regulator

Grounded emitter amplifier

Emitter follower

E7E03: How does an analog phase modulator function?

By varying the tuning of a microphone preamplifier to produce PM signals

By varying the tuning of an amplifier tank circuit to produce AM signals

By varying the tuning of a microphone preamplifier to produce AM signals

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

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

E7H11: What are the major spectral impurity components of direct digital synthesizers?

Broadband noise

Digital conversion noise

Nyquist limit noise

E8A12: What type of information can be conveyed using digital waveforms?

Human speech

Video signals

Data

E8B11: Which of the following describes frequency division multiplexing?

The transmitted signal jumps from band to band at a predetermined rate

The transmitted signal is divided into packets of information

Two or more information streams are merged into a digital combiner, which then pulse position modulates the transmitter

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

E8D04: What is the PEP output of a transmitter that develops a peak voltage of 30 volts into a 50-ohm load?

4.5 watts

16 watts

18 watts

E9A02: How much gain does a 1/2-wavelength dipole in free space have compared to an isotropic antenna?

1.55 dB

3.05 dB

4.30 dB

E9B05: What usually occurs if a Yagi antenna is designed solely for maximum forward gain?

The front-to-back ratio increases

The frequency response is widened over the whole frequency band

The SWR is reduced

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

3

1

7

E9D10: What is the approximate feed point impedance at the center of a two-wire folded dipole antenna?

72 ohms

50 ohms

450 ohms

E9E01: What system matches a high-impedance transmission line to a lower impedance antenna by connecting the line to the driven element in two places spaced a fraction of a wavelength each side of element center?

The gamma matching system

The omega matching system

The stub matching system

E9F07: How does ladder line compare to small-diameter coaxial cable such as RG-58 at 50 MHz?

Higher SWR

Smaller reflection coefficient

Lower velocity factor

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

E9H03: What is the effective isotropic radiated power of a repeater station with 200 watts transmitter power output, 2-dB feed line loss, 2.8-dB duplexer loss, 1.2-dB circulator loss and 7-dBi antenna gain?

159 watts

632 watts

63.2 watts