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

E1A05: What is the maximum power output permitted on the 60 meter band?

50 watts PEP effective radiated power relative to an isotropic radiator

50 watts PEP effective radiated power relative to a dipole

100 watts PEP effective radiated power relative to an isotropic radiator

E1B10: What frequencies are authorized to an amateur station participating in RACES?

Specific segments in the amateur service MF, HF, VHF and UHF bands

Specific local government channels

Military Affiliate Radio System (MARS) channels

E1C10: What types of amateur stations may automatically retransmit the radio signals of other amateur stations?

Only beacon, repeater or space stations

Only earth stations, repeater stations or model craft

Only auxiliary, beacon or space stations

E1D11: Which amateur stations are eligible to operate as Earth stations?

Any amateur station whose licensee has filed a pre-space notification with the FCC's International Bureau

Only those of General, Advanced or Amateur Extra Class operators

Only those of Amateur Extra Class operators

E1E04: Which of the following best describes the Volunteer Examiner accreditation process?

Each General, Advanced and Amateur Extra Class operator is automatically accredited as a VE when the license is granted

The amateur operator applying must pass a VE examination administered by the FCC Enforcement Bureau

The prospective VE obtains accreditation from the FCC

E1F11: Which of the following best describes one of the standards that must be met by an external RF power amplifier if it is to qualify for a grant of FCC certification?

It must produce full legal output when driven by not more than 5 watts of mean RF input power

It must be capable of external RF switching between its input and output networks

It must exhibit a gain of 0 dB or less over its full output range

E2A05: What do the letters in a satellite's mode designator specify?

Power limits for uplink and downlink transmissions

The location of the ground control station

The polarization of uplink and downlink signals

E2B09: What hardware, other than a receiver with SSB capability and a suitable computer, is needed to decode SSTV using Digital Radio Mondiale (DRM)?

A special IF converter

A special front end limiter

A special notch filter to remove synchronization pulses

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

E2D03: Which of the following digital modes is especially useful for EME communications?

FSK441

PACTOR III

Olivia

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

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

E3C01: Which of the following effects does Aurora activity have on radio communications?

SSB signals are raspy

Signals propagating through the Aurora are fluttery

CW signals appear to be modulated by white noise

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

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

E4C11: Which of the following is a desirable amount of selectivity for an amateur SSB phone receiver?

1 kHz

4.2 kHz

4.8 kHz

E4D13: Which of the following can cause receiver desensitization?

Audio gain adjusted too low

Audio bias adjusted too high

Squelch gain misadjusted

E4E01: Which of the following types of receiver noise can often be reduced by use of a receiver noise blanker?

Broadband white noise

Heterodyne interference

All of these choices are correct

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

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%

E5C23: Which point on Figure E5-2 best represents the impedance of a series circuit consisting of a 300-ohm resistor, a 0.64-microhenry inductor and an 85-picofarad capacitor at 24.900 MHz?

Point 1

Point 3

Point 5

E5D18: How many watts are consumed in a circuit having a power factor of 0.71 if the apparent power is 500 VA?

704 W

252 W

1.42 mW

E6A10: In Figure E6-2, what is the schematic symbol for an N-channel dual-gate MOSFET?

2

5

6

E6B09: What is a common use for point contact diodes?

As a constant current source

As a constant voltage source

As a high voltage rectifier

E6C02: What logic state do the inputs of a TTL device assume if they are left open?

A logic-low state

The device becomes randomized and will not provide consistent high or low-logic states

Open inputs on a TTL device are ignored

E6D16: What is one reason for using ferrite toroids rather than powdered-iron toroids in an inductor?

Ferrite toroids generally have lower initial permeabilities

Ferrite toroids generally have better temperature stability

Ferrite toroids are easier to use with surface mount technology

E6E08: How is power-supply voltage normally furnished to the most common type of monolithic microwave integrated circuit (MMIC)?

MMICs require no operating bias

Through a capacitor and RF choke connected to the amplifier input lead

Directly to the bias-voltage (VCC IN) lead

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

E7A09: D. It produces a logic "1" at its output if any single input is a logic "1"?

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

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

E7B16: What is the effect of intermodulation products in a linear power amplifier?

Creation of parasitic oscillations

Low efficiency

All of these choices are correct

E7C03: What advantage does a Pi-L-network have over a Pi-network for impedance matching between the final amplifier of a vacuum-tube transmitter and an antenna?

Higher efficiency

Lower losses

Greater transformation range

E7D17: What is the primary reason that a high-frequency inverter type high-voltage power supply can be both less expensive and lighter in weight than a conventional power supply?

The inverter design does not require any output filtering

It uses a diode bridge rectifier for increased output

It uses a large power-factor compensation capacitor to create "free power" from the unused portion of the AC cycle

E7E09: What occurs when an excessive amount of signal energy reaches a mixer circuit?

Mixer blanking occurs

Automatic limiting occurs

A beat frequency is generated

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

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

E7H15: Which of these functions can be performed by a phase-locked loop?

Wide-band AF and RF power amplification

Comparison of two digital input signals, digital pulse counter

Photovoltaic conversion, optical coupling

E8A08: What is the period of a wave?

The number of degrees in one cycle

The number of zero crossings in one cycle

The amplitude of the wave

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

E8D15: Which of the following is a typical value for the RMS voltage at a standard U.S. household electrical power outlet?

340V AC

85V AC

170V AC

E9A01: Which of the following describes an isotropic antenna?

A grounded antenna used to measure earth conductivity

A horizontally polarized antenna used to compare Yagi antennas

A spacecraft antenna used to direct signals toward the earth

E9B07: How does the total amount of radiation emitted by a directional gain antenna compare with the total amount of radiation emitted from an isotropic antenna, assuming each is driven by the same amount of power?

The total amount of radiation from the directional antenna is increased by the gain of the antenna

The total amount of radiation from the directional antenna is stronger by its front to back ratio

The radiation from the isotropic antenna is 2.15 dB stronger than that from the directional antenna

E9C06: What is the effect of a terminating resistor on a rhombic antenna?

It reflects the standing waves on the antenna elements back to the transmitter

It changes the radiation pattern from horizontal to vertical polarization

It decreases the ground loss

E9D06: Why should an HF mobile antenna loading coil have a high ratio of reactance to resistance?

To swamp out harmonics

To maximize losses

To minimize the Q

E9E04: What is the purpose of the series capacitor in a gamma-type antenna matching network?

To provide DC isolation between the feed line and the antenna

To provide a rejection notch to prevent the radiation of harmonics

To transform the antenna impedance to a higher value

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

E9G01: Which of the following can be calculated using a Smith chart?

Radiation resistance

Antenna radiation pattern

Radio propagation

E9H06: What is the triangulation method of direction finding?

The geometric angle of sky waves from the source are used to determine its position

A fixed receiving station plots three headings from the signal source on a map

A fixed receiving station uses three different antennas to plot the location of the signal source