E0A03: Which of the following would be a practical way to estimate whether the RF fields produced by an amateur radio station are within permissible MPE limits?

Use a calibrated antenna analyzer

Use a hand calculator plus Smith-chart equations to calculate the fields

All of the choices are correct

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

E1B01: Which of the following constitutes a spurious emission?

An amateur station transmission made at random without the proper call sign identification

A signal transmitted to prevent its detection by any station other than the intended recipient

Any transmitted bogus signal that interferes with another licensed radio station

E1C01: What is a remotely controlled station?

A station operated away from its regular home location

A station controlled by someone other than the licensee

A station operating under automatic control

E1D09: Which amateur service UHF bands have frequencies available for a space station?

70 cm

70 cm and 33 cm

33 cm and 13 cm

E1E06: Who is responsible for the proper conduct and necessary supervision during an amateur operator license examination session?

The VEC coordinating the session

The FCC

The VE session manager

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

E2A07: Which of the following types of signals can be relayed through a linear transponder?

FM and CW

SSB and SSTV

PSK and Packet

E2B14: What aspect of an amateur slow-scan television signal encodes the brightness of the picture?

Tone amplitude

Sync amplitude

Sync frequency

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

E2D10: How can an APRS station be used to help support a public service communications activity?

An APRS station with an emergency medical technician can automatically transmit medical data to the nearest hospital

APRS stations with General Personnel Scanners can automatically relay the participant numbers and time as they pass the check points

All of these choices are correct

E2E02: What do the letters FEC mean as they relate to digital operation?

First Error Correction

Fatal Error Correction

Final Error Correction

E3A09: Which of the following frequency ranges is well suited for meteor-scatter communications?

1.8 - 1.9 MHz

10 - 14 MHz

220 - 450 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

E3C11: From the contiguous 48 states, in which approximate direction should an antenna be pointed to take maximum advantage of aurora propagation?

South

East

West

E4A06: Which of the following could be determined with a spectrum analyzer?

The degree of isolation between the input and output ports of a 2 meter duplexer

Whether a crystal is operating on its fundamental or overtone frequency

The spectral output of a transmitter

E4B15: Which of the following can be used as a relative measurement of the Q for a series-tuned circuit?

The inductance to capacitance ratio

The frequency shift

The resonant frequency of the circuit

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

E4D01: What is meant by the blocking dynamic range of a receiver?

The minimum difference in dB between the levels of two FM signals which will cause one signal to block the other

The difference in dB between the noise floor and the third order intercept point

The minimum difference in dB between two signals which produce third order intermodulation products greater than the noise floor

E4E04: How can conducted and radiated noise caused by an automobile alternator be suppressed?

By installing filter capacitors in series with the DC power lead and by installing a blocking capacitor in the field lead

By installing a noise suppression resistor and a blocking capacitor in both leads

By installing a high-pass filter in series with the radio's power lead and a low-pass filter in parallel with the field lead

E5A15: What is the resonant frequency of a series RLC circuit if R is 56 ohms, L is 40 microhenrys and C is 200 picofarads?

3.76 MHz

11.18 MHz

22.36 MHz

E5B03: The capacitor in an RC circuit is discharged to what percentage of the starting voltage after two time constants?

86.5%

63.2%

36.8%

E5C01: In polar coordinates, what is the impedance of a network consisting of a 100-ohm-reactance inductor in series with a 100-ohm resistor?

121 ohms at an angle of 35 degrees

161 ohms at an angle of 55 degrees

181 ohms at an angle of 65 degrees

E5D02: Why is the resistance of a conductor different for RF currents than for direct currents?

Because the insulation conducts current at high frequencies

Because of the Heisenburg Effect

Because conductors are non-linear devices

E6A06: What is the beta of a bipolar junction transistor?

The frequency at which the current gain is reduced to 1

The breakdown voltage of the base to collector junction

The switching speed of the transistor

E6B13: What type of bias is required for an LED to emit light?

Reverse bias

Zero bias

Inductive bias

E6C07: In Figure E6-5, what is the schematic symbol for an AND gate?

2

3

4

E6D11: How many turns will be required to produce a 1-mH inductor using a ferrite toroidal core that has an inductance index (A L) value of 523 millihenrys/1000 turns?

2 turns

4 turns

229 turns

E6E01: What is a crystal lattice filter?

A power supply filter made with interlaced quartz crystals

An audio filter made with four quartz crystals that resonate at 1-kHz intervals

A filter with wide bandwidth and shallow skirts made using quartz crystals

E6F04: What is the photovoltaic effect?

The conversion of voltage to current when exposed to light

The conversion of electrical energy to mechanical energy

The tendency of a battery to discharge when used outside

E7A11: What is the name for logic which represents a logic "1" as a high voltage?

Reverse Logic

Assertive Logic

Negative logic

E7B05: What can be done to prevent unwanted oscillations in an RF power amplifier?

Tune the stage for maximum SWR

Tune both the input and output for maximum power

Use a phase inverter in the output filter

E7C14: Which of these modes is most affected by non-linear phase response in a receiver IF filter?

Meteor Scatter

Single-Sideband voice

Video

E7D02: What is one characteristic of a switching electronic voltage regulator?

The resistance of a control element is varied in direct proportion to the line voltage or load current

It is generally less efficient than a linear regulator

It gives a ramp voltage at its output

E7E10: How does a diode detector function?

By breakdown of the Zener voltage

By mixing signals with noise in the transition region of the diode

By sensing the change of reactance in the diode with respect to frequency

E7F06: What is one purpose of a marker generator?

To add audio markers to an oscilloscope

To provide a frequency reference for a phase locked loop

To add time signals to a transmitted signal

E7G04: Which of the following is a type of capacitor best suited for use in high-stability op-amp RC active filter circuits?

Electrolytic

Disc ceramic

Paper

E7H17: Why is a phase-locked loop often used as part of a variable frequency synthesizer for receivers and transmitters?

It generates FM sidebands

It eliminates the need for a voltage controlled oscillator

It can be used to generate or demodulate SSB signals by quadrature phase synchronization

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

Harmonic regeneration

Level shifting

Phase reversal

E8B09: What is meant by deviation ratio?

The ratio of the audio modulating frequency to the center carrier frequency

The ratio of the carrier center frequency to the audio modulating frequency

The ratio of the highest audio modulating frequency to the average audio modulating frequency

E8C10: What spread-spectrum communications technique alters the center frequency of a conventional carrier many times per second in accordance with a pseudo-random list of channels?

Direct sequence

Time-domain frequency modulation

Frequency compandored spread-spectrum

E8D14: Which of the following is a typical value for the peak-to-peak voltage at a standard U.S. household electrical outlet?

240 volts

120 volts

170 volts

E9A04: Why would one need to know the feed point impedance of an antenna?

To measure the near-field radiation density from a transmitting antenna

To calculate the front-to-side ratio of the antenna

To calculate the front-to-back ratio of the antenna

E9B13: What does the abbreviation NEC stand for when applied to antenna modeling programs?

Next Element Comparison

National Electrical Code

Numeric Electrical Computation

E9C02: What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/4-wavelength apart and fed 90 degrees out of phase?

A figure-8 end-fire along the axis of the array

A figure-8 broadside to the axis of the array

Omnidirectional

E9D15: Which of the following would provide the best RF ground for your station?

A 50-ohm resistor connected to ground

An electrically-short connection to a metal water pipe

An electrically-short connection to 3 or 4 interconnected ground rods via a series RF choke

E9E10: Which of these choices is an effective way to match an antenna with a 100-ohm feed point impedance to a 50-ohm coaxial cable feed line?

Connect a 1/4-wavelength open stub of 300-ohm twin-lead in parallel with the coaxial feed line where it connects to the antenna

Insert a 1/2 wavelength piece of 300-ohm twin-lead in series between the antenna terminals and the 50-ohm feed cable

Connect 1/2 wavelength shorted stub of 75-ohm cable in parallel with the 50-ohm cable where it attaches to the antenna

E9F13: What impedance does a 1/4-wavelength transmission line present to a generator when the line is shorted at the far end?

Very low impedance

The same as the characteristic impedance of the transmission line

The same as the generator output impedance

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