G0A12: What precaution should you take whenever you make adjustments or repairs to an antenna?

Ensure that you and the antenna structure are grounded

Wear a radiation badge

All of these choices are correct

G0B01: Which wire or wires in a four-conductor line cord should be attached to fuses or circuit breakers in a device operated from a 240-VAC single-phase source?

Only the neutral wire

Only the ground wire

All wires

G1A09: Which of the following frequencies is within the General Class portion of the 80 meter band?

1855 kHz

2560 kHz

3650 kHz

G1B10: What is the power limit for beacon stations?

10 watts PEP output

20 watts PEP output

200 watts PEP output

G1C01: What is the maximum transmitting power an amateur station may use on 10.140 MHz?

1000 watts PEP output

1500 watts PEP output

2000 watts PEP output

G1D04: Which of the following is a requirement for administering a Technician Class operator examination?

At least two VEC accredited General Class or higher VEs must be present

At least two General Class or higher VEs must be present, but only one need be VEC accredited

At least three VEs of Technician Class or higher must be present

G1E07: With which foreign countries is third party traffic prohibited, except for messages directly involving emergencies or disaster relief communications?

Countries in ITU Region 2

Countries in ITU Region 1

Any country which is not a member of the International Amateur Radio Union (IARU)

G2A01: Which sideband is most commonly used for voice communications on frequencies of 14 MHz or higher?

Lower sideband

Vestigial sideband

Double sideband

G2B07: Which of the following complies with good amateur practice when choosing a frequency on which to initiate a call?

Check to see if the channel is assigned to another station

Identify your station by transmitting your call sign at least 3 times

All of these choices are correct

G2C04: What does it mean when a CW operator sends "CL" at the end of a transmission?

Keep frequency clear

Operating full break-in

Listening only for a specific station or stations

G2D03: What skills learned during 'hidden transmitter hunts' are of help to the Amateur Auxiliary?

Identification of out of band operation

Identification of different call signs

Hunters have an opportunity to transmit on non-amateur frequencies

G2E12: How does the receiving station respond to an ARQ data mode packet containing errors?

Terminates the contact

Sends the packet back to the transmitting station

Requests a change in transmitting protocol

G3A10: What causes HF propagation conditions to vary periodically in a 28-day cycle?

Long term oscillations in the upper atmosphere

Cyclic variation in the Earth's radiation belts

The position of the Moon in its orbit

G3B06: What usually happens to radio waves with frequencies below the Lowest Usable Frequency (LUF)?

They are bent back to the Earth

They pass through the ionosphere

They are bent and trapped in the ionosphere to circle the Earth

G3C03: Why is the F2 region mainly responsible for the longest distance radio wave propagation?

Because it is the densest ionospheric layer

Because it does not absorb radio waves as much as other ionospheric regions

All of these choices are correct

G4A09: Why is a time delay sometimes included in a transmitter keying circuit?

To prevent stations from talking over each other

To allow the transmitter power regulators to charge properly

To allow time for a warning signal to be sent to other stations

G4B04: What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

The local oscillator of the transmitter

An external RF oscillator

The transmitter balanced mixer output

G4C07: What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Install an RF filter in series with the ground wire

Use a ground loop for best conductivity

Install a few ferrite beads on the ground wire where it connects to your station

G4D07: How much must the power output of a transmitter be raised to change the S- meter reading on a distant receiver from S8 to S9?

Approximately 1.5 times

Approximately 2 times

Approximately 8 times

G4E04: Why is it best NOT to draw the DC power for a 100-watt HF transceiver from an automobile's auxiliary power socket?

The socket is not wired with an RF-shielded power cable

The DC polarity of the socket is reversed from the polarity of modern HF

Drawing more than 50 watts from this socket could cause the engine to overheat

G5A13: Which of the following devices can be used for impedance matching at radio frequencies?

A transformer

A Pi-network

A length of transmission line

G5B02: How does the total current relate to the individual currents in each branch of a parallel circuit?

It equals the average of each branch current

It decreases as more parallel branches are added to the circuit

It is the sum of the reciprocal of each individual voltage drop

G5C14: Which of the following components should be added to an inductor to increase the inductance?

A capacitor in series

A resistor in parallel

An inductor in parallel

G6A07: Which of the following is a reason not to use wire-wound resistors in an RF circuit?

The resistor's tolerance value would not be adequate for such a circuit

The resistor could overheat

The resistor's internal capacitance would detune the circuit

G6B04: When two or more diodes are connected in parallel to increase current handling capacity, what is the purpose of the resistor connected in series with each diode?

To ensure the thermal stability of the power supply

To regulate the power supply output voltage

To act as an inductor

G6C13: Which of these connector types is commonly used for RF service at frequencies up to 150 MHz?

Octal

RJ-11

DB-25

G7A03: What is the peak-inverse-voltage across the rectifiers in a full-wave bridge power supply?

One-quarter the normal output voltage of the power supply

Half the normal output voltage of the power supply

Double the normal peak output voltage of the power supply

G7B02: Which of the following is an advantage of using the binary system when processing digital signals?

The binary number system is most accurate

Binary numbers are more compatible with analog circuitry

All of these choices are correct

G7C08: What type of circuit is used in many FM receivers to convert signals coming from the IF amplifier to audio?

Product detector

Phase inverter

Mixer

G8A12: What signal(s) would be found at the output of a properly adjusted balanced modulator?

Either upper or lower sideband, but not both

Both upper and lower sidebands and the carrier

The modulating signal and the unmodulated carrier

G8B09: Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

It is required by FCC rules

It minimizes power consumption in the receiver

It improves impedance matching of the antenna

G9A05: How does the attenuation of coaxial cable change as the frequency of the signal it is carrying increases?

It is independent of frequency

It decreases

It reaches a maximum at approximately 18 MHz

G9B11: What is the approximate length for a 1/2-wave dipole antenna cut for 3.550 MHz?

42 feet

84 feet

263 feet

G9C16: How does the gain of a two-element delta-loop beam compare to the gain of a two-element quad antenna?

3 dB higher

3 dB lower

2.54 dB higher

G9D06: Which of the following is an advantage of a log periodic antenna?

Higher gain per element than a Yagi antenna

Harmonic suppression

Polarization diversity