T0A12: What kind of hazard might exist in a power supply when it is turned off and disconnected?

Static electricity could damage the grounding system

Circulating currents inside the transformer might cause damage

The fuse might blow if you remove the cover

T0B04: Which of the following is an important safety precaution to observe when putting up an antenna tower?

Wear a ground strap connected to your wrist at all times

Insulate the base of the tower to avoid lightning strikes

All of these choices are correct

T0C03: What is the maximum power level that an amateur radio station may use at VHF frequencies before an RF exposure evaluation is required?

1500 watts PEP transmitter output

1 watt forward power

50 watts PEP reflected power

T1A09: Who selects a Frequency Coordinator?

The FCC Office of Spectrum Management and Coordination Policy

The local chapter of the Office of National Council of Independent Frequency Coordinators

FCC Regional Field Office

T1B04: Which amateur band are you using when your station is transmitting on 146.52 MHz?

20 meter band

14 meter band

6 meter band

T1C06: From which of the following may an FCC-licensed amateur station transmit, in addition to places where the FCC regulates communications?

From within any country that belongs to the International Telecommunications Union

From within any country that is a member of the United Nations

From anywhere within in ITU Regions 2 and 3

T1D09: Under which of the following circumstances are amateur stations authorized to transmit signals related to broadcasting, program production, or news gathering, assuming no other means is available?

Only when broadcasting communications to or from the space shuttle.

Only where noncommercial programming is gathered and supplied exclusively to the National Public Radio network

Only when using amateur repeaters linked to the Internet

T1E09: What type of control is being used when transmitting using a handheld radio?

Radio control

Unattended control

Automatic control

T1F07: Which of the following restrictions apply when appending a self-assigned call sign indicator?

It must be more than three letters and less than five letters

It must be less than five letters

It must start with the letters AA through AL, K, N, or W and be not less than two characters or more than five characters in length

T2A07: Which of the following is true when making a test transmission?

Station identification is not required if the transmission is less than 15 seconds

Station identification is not required if the transmission is less than 1 watt

Station identification is required only if your station can be heard

T2B10: What is the "Q" signal used to indicate that you are receiving interference from other stations?

QRN

QTH

QSB

T2C11: What is meant by the term "check" in reference to a formal traffic message?

The check is the value of a money order attached to the message

The check is a list of stations that have relayed the message

The check is a box on the message form that tells you the message was received

T3A09: Which of the following is a common effect of "skip" reflections between the Earth and the ionosphere?

The sidebands become reversed at each reflection

The apparent frequency of the received signal is shifted by a random amount

Signals at frequencies above 30 MHz become stronger with each reflection

T3B01: What is the name for the distance a radio wave travels during one complete cycle?

Wave speed

Waveform

Wave spread

T3C02: Which of the following might be happening when VHF signals are being received from long distances?

Signals are being reflected from outer space

Signals are arriving by sub-surface ducting

Signals are being reflected by lightning storms in your area

T4A05: What type of filter should be connected to a TV receiver as the first step in trying to prevent RF overload from a nearby 2 meter transmitter?

Low-pass filter

High-pass filter

Band-pass filter

T4B10: Which of the following is an appropriate receive filter to select in order to minimize noise and interference for CW reception?

1000 Hz

2400 Hz

5000 Hz

T5A01: Electrical current is measured in which of the following units?

Volts

Watts

Ohms

T5B08: How many microfarads are 1,000,000 picofarads?

0.001 microfarads

1000 microfarads

1,000,000,000 microfarads

T5C05: What is the unit of frequency?

Henry

Farad

Tesla

T5D09: What is the current flowing through a 24-ohm resistor connected across 240 volts?

24,000 amperes

0.1 amperes

216 amperes

T6A06: What type of electrical component stores energy in a magnetic field?

Resistor

Capacitor

Diode

T6B05: Which of the following electronic components can amplify signals?

Variable resistor

Electrolytic capacitor

Multi-cell battery

T6C02: What is component 1 in figure T1?

Transistor

Battery

Connector

T6D04: Which of the following can be used to display signal strength on a numeric scale?

Potentiometer

Transistor

Relay

T7A11: Which of the following circuits demodulates FM signals?

Limiter

Product detector

Phase inverter

T7B12: What does the acronym "BER" mean when applied to digital communications systems?

Baud Enhancement Recovery

Baud Error Removal

Bit Exponent Resource

T7C02: Which of the following instruments can be used to determine if an antenna is resonant at the desired operating frequency?

A VTVM

A "Q" meter

A frequency counter

T7D10: What is probably happening when an ohmmeter, connected across a circuit, initially indicates a low resistance and then shows increasing resistance with time?

The ohmmeter is defective

The circuit contains a large inductor

The circuit is a relaxation oscillator

T8A09: What is the approximate bandwidth of a VHF repeater FM phone signal?

Less than 500 Hz

About 150 kHz

Between 50 and 125 kHz

T8B04: Which amateur stations may make contact with an amateur station on the International Space Station using 2 meter and 70 cm band amateur radio frequencies?

Only members of amateur radio clubs at NASA facilities

Only the astronaut's family members who are hams

You cannot talk to the ISS on amateur radio frequencies

T8C05: What is a grid locator?

A letter-number designator assigned to an azimuth and elevation

An instrument for neutralizing a final amplifier

An instrument for radio direction finding

T8D04: What type of transmission is indicated by the term NTSC?

A Normal Transmission mode in Static Circuit

A special mode for earth satellite uplink

A frame compression scheme for TV signals

T9A09: What is the approximate length, in inches, of a 6 meter 1/2-wavelength wire dipole antenna?

6

50

236

T9B11: Which of the following types of feedline has the lowest loss at VHF and UHF?

50-ohm flexible coax

Multi-conductor unbalanced cable

75-ohm flexible coax