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

E1A10: If an amateur station is installed aboard a ship or aircraft, what condition must be met before the station is operated?

The amateur station operator must agree to not transmit when the main ship or aircraft radios are in use

It must have a power supply that is completely independent of the main ship or aircraft power supply

Its operator must have an FCC Marine or Aircraft endorsement on his or her amateur license

E1B11: What is the permitted mean power of any spurious emission relative to the mean power of the fundamental emission from a station transmitter or external RF amplifier installed after January 1, 2003, and transmitting on a frequency below 30 MHZ?

At least 53 dB below

At least 63 dB below

At least 73 dB below

E1C05: When may an automatically controlled station originate third party communications?

Only when transmitting an RTTY or data emissions

When specifically agreed upon by the sending and receiving stations

When approved by the National Telecommunication and Information Administration

E1D03: What is a telecommand station in the amateur satellite service?

An amateur station located on the Earth's surface for communications with other Earth stations by means of Earth satellites

An amateur station located more than 50 km above the Earth's surface

An amateur station that transmits telemetry consisting of measurements of upper atmosphere data from space

E1E13: What are the consequences of failing to appear for re-administration of an examination when so directed by the FCC?

The person may be fined or imprisoned

The licensee is disqualified from any future examination for an amateur operator license grant

All these choices are correct

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

E2A13: What type of satellite appears to stay in one position in the sky?

HEO

Geomagnetic

LEO

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

14.230 MHz

29.6 MHz

52.525 MHz

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

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

E2E10: Which of these digital communications modes has the narrowest bandwidth?

MFSK16

170-Hz shift, 45 baud RTTY

300-baud packet

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

E3B11: Which of the following describes gray-line propagation?

Backscatter contacts on the 10 meter band

Over the horizon propagation on the 6 and 2 meter bands

Tropospheric propagation on the 2 meter and 70 centimeter bands

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

E4A09: Which of the following describes a good method for measuring the intermodulation distortion of your own PSK signal?

Multiply the ALC level on the transmitter during a normal transmission by the average power output

Use an RF voltmeter coupled to the transmitter output using appropriate isolation to prevent damage to the meter

All of these choices are correct

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

E4C04: What is the definition of the noise figure of a receiver?

The ratio of atmospheric noise to phase noise

The noise bandwidth in Hertz compared to the theoretical bandwidth of a resistive network

The ratio of thermal noise to atmospheric noise

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

E4E02: Which of the following types of receiver noise can often be reduced with a DSP noise filter?

Broadband white noise

Ignition noise

Power line noise

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

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

E5C20: Which point in Figure E5-2 best represents the impedance of a series circuit consisting of a 300 ohm resistor and an 18 microhenry inductor at 3.505 MHz?

Point 1

Point 7

Point 8

E5D17: How many watts are consumed in a circuit having a power factor of 0.6 if the input is 200V AC at 5 amperes?

200 watts

1000 watts

1600 watts

E6A12: Why do many MOSFET devices have internally connected Zener diodes on the gates?

To provide a voltage reference for the correct amount of reverse-bias gate voltage

To protect the substrate from excessive voltages

To keep the gate voltage within specifications and prevent the device from overheating

E6B12: What is one common use for PIN diodes?

As a constant current source

As a constant voltage source

As a high voltage rectifier

E6C01: What is the recommended power supply voltage for TTL series integrated circuits?

12 volts

1.5 volts

13.6 volts

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

E6E10: What is the equivalent circuit of a quartz crystal?

Motional capacitance, motional inductance, loss resistance, and a capacitor representing electrode and stray capacitance all in parallel

Motional capacitance, motional inductance, loss resistance, and a capacitor represent electrode and stray capacitance all in series

Motional inductance and loss resistance in series, paralleled with motional capacitance and a capacitor representing electrode and stray capacitance

E6F11: Which of the following is the approximate open-circuit voltage produced by a fully-illuminated silicon photovoltaic cell?

0.1 V

1.5 V

12 V

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"

E7B06: Which of the following amplifier types reduces or eliminates even-order harmonics?

Push-push

Class C

Class AB

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

Meteor Scatter

Single-Sideband voice

Video

E7D16: When several electrolytic filter capacitors are connected in series to increase the operating voltage of a power supply filter circuit, why should resistors be connected across each capacitor?

To equalize, as much as possible, the voltage drop across each capacitor

To provide a safety bleeder to discharge the capacitors when the supply is off

To provide a minimum load current to reduce voltage excursions at light loads

E7E04: What is one way a single-sideband phone signal can be generated?

By using a reactance modulator followed by a mixer

By using a loop modulator followed by a mixer

By driving a product detector with a DSB signal

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

E7G12: What is an integrated circuit operational amplifier?

A digital audio amplifier whose characteristics are determined by components external to the amplifier

An amplifier used to increase the average output of frequency modulated amateur signals to the legal limit

An RF amplifier used in the UHF and microwave regions

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

E8A07: What determines the PEP-to-average power ratio of a single-sideband phone signal?

The frequency of the modulating signal

The degree of carrier suppression

The amplifier gain

E8B10: Which of these methods can be used to combine several separate analog information streams into a single analog radio frequency signal?

Frequency shift keying

A diversity combiner

Pulse compression

E8C12: What is the advantage of including a parity bit with an ASCII character stream?

Faster transmission rate

The signal can overpower interfering signals

Foreign language characters can be sent

E8D12: What is the peak voltage of a sinusoidal waveform if an RMS-reading voltmeter reads 34 volts?

123 volts

96 volts

55 volts

E9A14: How much gain does an antenna have compared to a 1/2-wavelength dipole when it has 12 dB gain over an isotropic antenna?

6.17 dB

12.5 dB

14.15 dB

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

E9D07: What is a disadvantage of using a multiband trapped antenna?

It radiates the harmonics and fundamental equally well

It is too sharply directional at lower frequencies

It must be neutralized

E9E09: Which of these matching systems is an effective method of connecting a 50-ohm coaxial cable feed line to a grounded tower so it can be used as a vertical antenna?

Double-bazooka match

Hairpin match

All of these choices are correct

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

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

E9H05: What is the main drawback of a wire-loop antenna for direction finding?

It is non-rotatable

It receives equally well in all directions

It is practical for use only on VHF bands