E0A08: What does SAR measure?

Synthetic Aperture Ratio of the human body

Signal Amplification Rating

The rate of RF energy reflected from stationary terrain

E1A09: What is the first action you should take if your digital message forwarding station inadvertently forwards a communication that violates FCC rules?

Notify the originating station that the communication does not comply with FCC rules

Notify the nearest FCC Field Engineer's office

Discontinue forwarding all messages

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)

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

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

E1E05: What is the minimum passing score on amateur operator license examinations?

Minimum passing score of 70%

Minimum passing score of 80%

Minimum passing score of 77%

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

E2A12: What is one way to predict the location of a satellite at a given time?

By means of the Doppler data for the specified satellite

By subtracting the mean anomaly from the orbital inclination

By adding the mean anomaly to the orbital inclination

E2B10: Which of the following is an acceptable bandwidth for Digital Radio Mondiale (DRM) based voice or SSTV digital transmissions made on the HF amateur bands?

10 KHz

15 KHz

20 KHz

E2C03: From which of the following bands is amateur radio contesting generally excluded?

6 meters

2 meters

33 cm

E2D07: Which of the following digital protocols is used by APRS?

PACTOR

802.11

AMTOR

E2E08: Which of the following HF digital modes can be used to transfer binary files?

Hellschreiber

RTTY

AMTOR

E3A06: What frequency range would you normally tune to find EME signals in the 2 meter band?

144.000 - 144.001 MHz

144.100 - 144.300 MHz

145.000 - 145.100 MHz

E3B03: What is the best time of day for transequatorial propagation?

Morning

Noon

Late at night

E3C10: How does the performance of a horizontally polarized antenna mounted on the side of a hill compare with the same antenna mounted on flat ground?

The main lobe takeoff angle increases in the downhill direction

The horizontal beam width decreases in the downhill direction

The horizontal beam width increases in the uphill direction

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

E4B07: Which of the following is good practice when using an oscilloscope probe?

Never use a high impedance probe to measure a low impedance circuit

Never use a DC-coupled probe to measure an AC circuit

All of these choices are correct

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

E4D08: What causes intermodulation in an electronic circuit?

Too little gain

Lack of neutralization

Positive feedback

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

E5C19: Which point on Figure E5-2 best represents that impedance of a series circuit consisting of a 400 ohm resistor and a 38 picofarad capacitor at 14 MHz?

Point 2

Point 5

Point 6

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

E6A15: Which of the following semiconductor materials contains an excess of holes in the outer shell of electrons?

N-type

Superconductor-type

Bipolar-type

E6B07: What is the failure mechanism when a junction diode fails due to excessive current?

Excessive inverse voltage

Insufficient forward voltage

Charge carrier depletion

E6C09: In Figure E6-5, what is the schematic symbol for an OR gate?

2

4

6

E6D10: What is a primary advantage of using a toroidal core instead of a solenoidal core in an inductor?

Toroidal cores make it easier to couple the magnetic energy into other components

Toroidal cores exhibit greater hysteresis

Toroidal cores have lower Q characteristics

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

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

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"

E7B17: Why are third-order intermodulation distortion products of particular concern in linear power amplifiers?

Because they are relatively far in frequency from the desired signal

Because they invert the sidebands causing distortion

Because they maintain the sidebands, thus causing multiple duplicate signals

E7C10: Which of the following filters would be the best choice for use in a 2 meter repeater duplexer?

A crystal filter

A DSP filter

An L-C filter

E7D11: What is the purpose of R1 in the circuit shown in Figure E7-3?

It provides a constant load to the voltage source

It couples hum to D1

It bypasses hum around D1

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

E7G03: Which of the following is an advantage of using an op-amp instead of LC elements in an audio filter?

Op-amps are more rugged

Op-amps are fixed at one frequency

Op-amps are available in more varieties than are LC elements

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

E8A09: What type of waveform is produced by human speech?

Sinusoidal

Logarithmic

Trapezoidal

E8B04: What is the modulation index of an FM-phone signal having a maximum carrier deviation of plus or minus 6 kHz when modulated with a 2-kHz modulating frequency?

6000

2000

1/3

E8C06: What is the necessary bandwidth of a 170-hertz shift, 300-baud ASCII transmission?

0.1 Hz

0.3 kHz

1.0 kHz

E8D04: What is the PEP output of a transmitter that develops a peak voltage of 30 volts into a 50-ohm load?

4.5 watts

16 watts

18 watts

E9A03: Which of the following antennas has no gain in any direction?

Quarter-wave vertical

Yagi

Half-wave dipole

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

E9C03: What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/2-wavelength apart and fed in phase?

Omnidirectional

A cardioid

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

E9D13: What happens to feed point impedance at the base of a fixed-length HF mobile antenna as the frequency of operation is lowered?

The radiation resistance decreases and the capacitive reactance decreases

The radiation resistance increases and the capacitive reactance decreases

The radiation resistance increases and the capacitive reactance increases

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

E9F09: What is the approximate physical length of a solid polyethylene dielectric coaxial transmission line that is electrically one-quarter wavelength long at 7.2 MHz?

10 meters

24 meters

50 meters

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

E9H11: What characteristic of a cardioid-pattern antenna is useful for direction finding?

A very sharp peak

Broad band response

High-radiation angle