E0A08: What does SAR measure?

Synthetic Aperture Ratio of the human body

Signal Amplification Rating

The rate of RF energy reflected from stationary terrain

E1A08: If a station in a message forwarding system inadvertently forwards a message that is in violation of FCC rules, who is primarily accountable for the rules violation?

The control operator of the packet bulletin board station

The control operators of all the stations in the system

The control operators of all the stations in the system not authenticating the source from which they accept communications

E1B06: Which of the following additional rules apply if you are installing an amateur station antenna at a site at or near a public use airport?

No special rules apply if your antenna structure will be less than 300 feet in height

You must file an Environmental Impact Statement with the EPA before construction begins

You must obtain a construction permit from the airport zoning authority

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

E1D06: Which of the following special provisions must a space station incorporate in order to comply with space station requirements?

The space station must cease all transmissions after 5 years

The space station must be capable of changing its orbit whenever such a change is ordered by NASA

All of these choices are correct

E1E07: What should a VE do if a candidate fails to comply with the examiner's instructions during an amateur operator license examination?

Warn the candidate that continued failure to comply will result in termination of the examination

Allow the candidate to complete the examination, but invalidate the results

Immediately terminate everyones examination and close the session

E1F13: What types of communications may be transmitted to amateur stations in foreign countries?

Business-related messages for non-profit organizations

Messages intended for connection to users of the maritime satellite service

All of these choices are correct

E2A09: What do the terms L band and S band specify with regard to satellite communications?

The 2 meter and 70 centimeter bands

FM and Digital Store-and-Forward systems

Which sideband to use

E2B18: On which of the following frequencies is one likely to find FM ATV transmissions?

14.230 MHz

29.6 MHz

52.525 MHz

E2C01: Which of the following is true about contest operating?

Interference to other amateurs is unavoidable and therefore acceptable

It is mandatory to transmit the call sign of the station being worked as part of every transmission to that station

Every contest requires a signal report in the exchange

E2D11: Which of the following data are used by the APRS network to communicate your location?

Polar coordinates

Time and frequency

Radio direction finding LOPs

E2E05: How does ARQ accomplish error correction?

Special binary codes provide automatic correction

Special polynomial codes provide automatic correction

If errors are detected, redundant data is substituted

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

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

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

E4B03: If a frequency counter with a specified accuracy of +/- 1.0 ppm reads 146,520,000 Hz, what is the most the actual frequency being measured could differ from the reading?

165.2 Hz

14.652 kHz

1.4652 MHz

E4C13: How does a narrow-band roofing filter affect receiver performance?

It improves sensitivity by reducing front end noise

It improves intelligibility by using low Q circuitry to reduce ringing

All of these choices are correct

E4D02: Which of the following describes two problems caused by poor dynamic range in a communications receiver?

Oscillator instability requiring frequent retuning and loss of ability to recover the opposite sideband

Cross-modulation of the desired signal and insufficient audio power to operate the speaker

Oscillator instability and severe audio distortion of all but the strongest received signals

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

E5A06: What is the magnitude of the circulating current within the components of a parallel LC circuit at resonance?

It is at a minimum

It equals 1 divided by the quantity 2 times Pi, multiplied by the square root of inductance L multiplied by capacitance C

It equals 2 multiplied by Pi, multiplied by frequency "F", multiplied by inductance "L"

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

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

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

E6A16: What are the majority charge carriers in N-type semiconductor material?

Holes

Free protons

Free neutrons

E6B04: What type of semiconductor device is designed for use as a voltage-controlled capacitor?

Tunnel diode

Silicon-controlled rectifier

Zener diode

E6C11: In Figure E6-5, what is the schematic symbol for the NOT operation (inverter)?

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

E6E12: What is a "Jones filter" as used as part of a HF receiver IF stage?

An automatic notch filter

A special filter that emphasizes image responses

A filter that removes impulse noise

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

It decreases

It stays the same

It becomes unstable

E7A07: What logical operation does a NAND gate perform?

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

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

It produces a logic "0" at its output if some but not all of its inputs are logic "1"

E7B03: Which of the following forms the output of a class D amplifier circuit?

A high-pass filter to compensate for low gain at low frequencies

A matched load resistor to prevent damage by switching transients

A temperature-compensated load resistor to improve linearity

E7C11: Which of the following is the common name for a filter network which is equivalent to two L networks connected back-to-back with the inductors in series and the capacitors in shunt at the input and output?

Pi-L

Cascode

Omega

E7D12: What is the purpose of R2 in the circuit shown in Figure E7-3?

It provides fixed bias for Q1

It provides fixed bias for D1

It decouples hum from D1

E7E02: What is the function of a reactance modulator?

To produce PM signals by using an electrically variable resistance

To produce AM signals by using an electrically variable inductance or capacitance

To produce AM signals by using an electrically variable resistance

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

E7H02: What condition must exist for a circuit to oscillate?

It must have at least two stages

It must be neutralized

It must have negative feedback sufficient to cancel the input signal

E8A15: What would the waveform of a stream of digital data bits look like on a conventional oscilloscope?

A series of sine waves with evenly spaced gaps

A running display of alpha-numeric characters

None of the above; this type of signal cannot be seen on a conventional oscilloscope

E8B08: What parameter does the modulating signal vary in a pulse-position modulation system?

The number of pulses per second

The amplitude of the pulses

The duration of the pulses

E8C13: What is one advantage of using JT-65 coding?

Uses only a 65 Hz bandwidth

Easily copied by ear if necessary

Permits fast-scan TV transmissions over narrow bandwidth

E8D08: Which of the following best describes electromagnetic waves traveling in free space?

Electric and magnetic fields become aligned as they travel

The energy propagates through a medium with a high refractive index

The waves are reflected by the ionosphere and return to their source

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

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

E9C01: What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/2-wavelength apart and fed 180 degrees out of phase?

A cardioid

Omnidirectional

A figure-8 broadside to the axis of the array

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

Lower Q

Greater structural strength

Higher losses

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

E9F10: What impedance does a 1/8-wavelength transmission line present to a generator when the line is shorted at the far end?

A capacitive reactance

The same as the characteristic impedance of the line

The same as the input impedance to the final generator stage

E9G11: How are the wavelength scales on a Smith chart calibrated?

In fractions of transmission line electrical frequency

In fractions of antenna electrical wavelength

In fractions of antenna electrical frequency

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