E0A06: Why are there separate electric (E) and magnetic (H) field MPE limits?

The body reacts to electromagnetic radiation from both the E and H fields

Ground reflections and scattering make the field impedance vary with location

E field and H field radiation intensity peaks can occur at different locations

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

E1B09: Which amateur stations may be operated in RACES?

Only those club stations licensed to Amateur Extra class operators

Any FCC-licensed amateur station except a Technician class operator's station

Any FCC-licensed amateur station participating in the Military Affiliate Radio System (MARS)

E1C03: How do the control operator responsibilities of a station under automatic control differ from one under local control?

Under local control there is no control operator

Under automatic control there is no control operator

Under local control a control operator is not required to be present at a control point

E1D05: What class of licensee is authorized to be the control operator of a space station?

All except Technician Class

Only General, Advanced or Amateur Extra Class

Only Amateur Extra Class

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

E1F05: Amateur stations may not transmit in which of the following frequency segments if they are located in the contiguous 48 states and north of Line A?

440 - 450 MHz

53 - 54 MHz

222 - 223 MHz

E2A06: On what band would a satellite receive signals if it were operating in mode U/V?

144-146 MHz

50.0-50.2 MHz

29.5 to 29.7 MHz

E2B07: What is the name of the signal component that carries color information in NTSC video?

Luminance

Hue

Spectral Intensity

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

E2D02: What is the definition of baud?

The number of characters transmitted per second

The number of characters transmitted per minute

The number of words transmitted per minute

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

E3A07: What frequency range would you normally tune to find EME signals in the 70 cm band?

430.000 - 430.150 MHz

430.100 - 431.100 MHz

431.100 - 431.200 MHz

E3B07: Which of the following could account for hearing an echo on the received signal of a distant station?

High D layer absorption

Meteor scatter

Transmit frequency is higher than the MUF

E3C07: How does the radiation pattern of a horizontally polarized 3-element beam antenna vary with its height above ground?

The main lobe takeoff angle increases with increasing height

The horizontal beam width increases with height

The horizontal beam width decreases with height

E4A05: Which of the following test instruments is used to display intermodulation distortion products in an SSB transmission?

A wattmeter

A logic analyzer

A time-domain reflectometer

E4B06: How much power is being absorbed by the load when a directional power meter connected between a transmitter and a terminating load reads 100 watts forward power and 25 watts reflected power?

100 watts

125 watts

25 watts

E4C06: A CW receiver with the AGC off has an equivalent input noise power density of -174 dBm/Hz. What would be the level of an unmodulated carrier input to this receiver that would yield an audio output SNR of 0 dB in a 400 Hz noise bandwidth?

174 dBm

-164 dBm

-155 dBm

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

E4E14: What is one type of electrical interference that might be caused by the operation of a nearby personal computer?

A loud AC hum in the audio output of your station receiver

A clicking noise at intervals of a few seconds

A whining type noise that continually pulses off and on

E5A03: What is the magnitude of the impedance of a series RLC circuit at resonance?

High, as compared to the circuit resistance

Approximately equal to capacitive reactance

Approximately equal to inductive reactance

E5B01: What is the term for the time required for the capacitor in an RC circuit to be charged to 63.2% of the applied voltage?

An exponential rate of one

One exponential period

A time factor of one

E5C21: Which point on Figure E5-2 best represents the impedance of a series circuit consisting of a 300 ohm resistor and a 19 picofarad capacitor at 21.200 MHz?

Point 3

Point 7

Point 8

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

E6A01: In what application is gallium arsenide used as a semiconductor material in preference to germanium or silicon?

In high-current rectifier circuits

In high-power audio circuits

At very low frequency RF circuits

E6B02: What is an important characteristic of a Schottky diode as compared to an ordinary silicon diode when used as a power supply rectifier?

Much higher reverse voltage breakdown

Controlled reverse avalanche voltage

Enhanced carrier retention time

E6C03: Which of the following describes tri-state logic?

Logic devices that utilize ternary math

Low power logic devices designed to operate at 3 volts

Proprietary logic devices manufactured by Tri-State Devices

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

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

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

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

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

Load resistors

Self bias

Feedback

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

E7D15: What is the purpose of a "step-start" circuit in a high-voltage power supply?

To provide a dual-voltage output for reduced power applications

To compensate for variations of the incoming line voltage

To allow for remote control of the power supply

E7E12: What is a frequency discriminator stage in a FM receiver?

An FM generator circuit

A circuit for filtering two closely adjacent signals

An automatic band-switching circuit

E7F07: What determines the accuracy of a frequency counter?

The speed of the logic devices used

Accuracy of the AC input frequency to the power supply

Proper balancing of the mixer diodes

E7G10: What absolute voltage gain can be expected from the circuit in Figure E7-4 when R1 is 1800 ohms and RF is 68 kilohms?

1

0.03

76

E7H08: What is a Gunn diode oscillator?

An oscillator based on the argon gas diode

A highly stable reference oscillator based on the tee-notch principle

A highly stable reference oscillator based on the hot-carrier effect

E8A06: What is the approximate ratio of PEP-to-average power in a typical single-sideband phone signal?

25 to 1

1 to 1

100 to 1

E8B05: What is the deviation ratio of an FM-phone signal having a maximum frequency swing of plus-or-minus 5 kHz when the maximum modulation frequency is 3 kHz?

60

0.167

0.6

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

E8D03: What input-amplitude parameter is valuable in evaluating the signal-handling capability of a Class A amplifier?

RMS voltage

Average power

Resting voltage

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

E9B11: What is a disadvantage of decreasing the number of wire segments in an antenna model below the guideline of 10 segments per half-wavelength?

Ground conductivity will not be accurately modeled

The resulting design will favor radiation of harmonic energy

The antenna will become mechanically unstable

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

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

72 ohms

50 ohms

450 ohms

E9E03: What is the name of the matching system that uses a section of transmission line connected in parallel with the feed line at the feed point?

The gamma match

The delta match

The omega match

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

E9H09: Which of the following describes the construction of a receiving loop antenna?

A large circularly-polarized antenna

A small coil of wire tightly wound around a toroidal ferrite core

A vertical antenna coupled to a feed line through an inductive loop of wire