eHam.net Practice Exam -

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?
A. Mica
B. Zinc oxide
C. Beryllium Oxide
D. Uranium Hexaflouride

E1A09 [97.301]

Which frequency bands contain at least one segment authorized only to control operators holding an Amateur Extra Class operator license?
A. 80/75, 40, 20 and 15 meters
B. 80/75, 40, 20, and 10 meters
C. 80/75, 40, 30 and 10 meters
D. 160, 80/75, 40 and 20 meters

E1B12 [97.407]

What are the frequencies authorized to an amateur station participating in RACES during a period when the President's War Emergency Powers are in force?
A. All frequencies in the amateur service authorized to the control operator
B. Specific amateur service frequency segments authorized in FCC Part 214
C. Specific local government channels
D. Military Affiliate Radio System (MARS) channels

E1C07 [97.3]

What is meant by local control?
A. Controlling a station through a local auxiliary link
B. Automatically manipulating local station controls
C. Direct manipulation of the transmitter by a control operator
D. Controlling a repeater using a portable handheld transceiver

E1D03 [97.3]

What is a telecommand station in the amateur satellite service?
A. An amateur station located on the Earth?s surface for communications with other Earth stations by means of Earth satellites
B. An amateur station that transmits communications to initiate, modify or terminate certain functions of a space station
C. An amateur station located more than 50 km above the Earth?s surface
D. An amateur station that transmits telemetry consisting of measurements of upper atmosphere data from space

E1E06 [97.509]

What is a VE team?
A. A group of at least three VEs who administer examinations for an amateur operator license
B. The VEC staff
C. One or two VEs who administer examinations for an amateur operator license
D. A group of FCC Volunteer Enforcers who investigate Amateur Rules violations

E1F01 [97.305]

On what frequencies are spread spectrum transmissions permitted?
A. Only on amateur frequencies above 50 MHz
B. Only on amateur frequencies above 222 MHz
C. Only on amateur frequencies above 420 MHz
D. Only on amateur frequencies above 144 MHz

E2A10

Why may the received signal from an amateur satellite exhibit a rapidly repeating fading effect?
A. Because the satellite is rotating
B. Because of ionospheric absorption
C. Because of the satellite's low orbital altitude
D. Because of the Doppler effect

E2B17

Which of the following is NOT a characteristic of FMTV (Frequency-Modulated Amateur Television) as compared to vestigial sideband AM television?
A. Immunity from fading due to limiting
B. Poor weak signal performance
C. Greater signal bandwidth
D. Greater complexity of receiving equipment

E2C08

Why are received spread-spectrum signals resistant to interference?
A. Signals not using the spectrum-spreading algorithm are suppressed in the receiver
B. The high power used by a spread-spectrum transmitter keeps its signal from being easily overpowered
C. The receiver is always equipped with a digital blanker circuit
D. If interference is detected by the receiver it will signal the transmitter to change frequencies

E2D10

How can an APRS station be used to help support a public service communications activity?
A. An APRS station with an emergency medical technician can automatically transmit medical data to the nearest hospital
B. APRS stations with General Personnel Scanners can automatically relay the participant numbers and time as they pass the check points
C. An APRS station with a GPS unit can automatically transmit information to show a mobile station's position during the event
D. All of these choices are correct

E2E04

What is indicated when one of the ellipses in an FSK crossed-ellipse display suddenly disappears?
A. Selective fading has occurred
B. One of the signal filters has saturated
C. The receiver has drifted 5 kHz from the desired receive frequency
D. The mark and space signal have been inverted

E3A10

Which range of frequencies is well suited for meteor-scatter communications?
A. 1.8 - 1.9 MHz
B. 10 - 14 MHz
C. 28 - 148 MHz
D. 220 - 450 MHz

E3B09 edited A]

At what time of day is gray-line propagation most prevalent?
A. At sunrise and sunset
B. When the sun is directly above the location of the transmitting station
C. When the sun is directly overhead at the middle of the communications path between the two stations
D. When the sun is directly above the location of the receiving station

E3C03

Where in the ionosphere does auroral activity occur?
A. At F-region height
B. In the equatorial band
C. At D-region height
D. At E-region height

E4A10

Which of the following is a useful test for a functioning NPN transistor in an active circuit where the transistor should be biased "on" ?
A. Measure base-to-emitter resistance with an ohmmeter; it should be approximately 6 to 7 ohms
B. Measure base-to-emitter resistance with an ohmmeter; it should be approximately 0.6 to 0.7 ohms
C. Measure base-to-emitter voltage with a voltmeter; it should be approximately 6 to 7 volts
D. Measure base-to-emitter voltage with a voltmeter; it should be approximately 0.6 to 0.7 volts

E4B14

How is the compensation of an oscilloscope probe typically adjusted?
A. A square wave is observed and the probe is adjusted until the horizontal portions of the displayed wave is as nearly flat as possible
B. A high frequency sine wave is observed, and the probe is adjusted for maximum amplitude
C. A frequency standard is observed, and the probe is adjusted until the deflection time is accurate
D. A DC voltage standard is observed, and the probe is adjusted until the displayed voltage is accurate

E4C14

Which of these choices is a desirable amount of selectivity for an amateur VHF FM receiver?
A. 1 kHz
B. 2.4 kHz
C. 4.2 kHz
D. 15 kHz

E4D14

Which of the following is a way to reduce the likelihood of receiver desensitization?
A. Decrease the RF bandwidth of the receiver
B. Raise the receiver IF frequency
C. Increase the receiver front end gain
D. Switch from fast AGC to slow AGC

E4E12

What is one disadvantage of using some automatic DSP notch-filters when attempting to copy CW signals?
A. The DSP filter can remove the desired signal at the same time as it removes interfering signals
B. Any nearby signal passing through the DSP system will always overwhelm the desired signal
C. Received CW signals will appear to be modulated at the DSP clock frequency
D. Ringing in the DSP filter will completely remove the spaces between the CW characters

E5A09

What is the phase relationship between the current through and the voltage across a parallel resonant circuit?
A. The voltage leads the current by 90 degrees
B. The current leads the voltage by 90 degrees
C. The voltage and current are in phase
D. The voltage and current are 180 degrees out of phase

E5B09 as E5D06

What is the relationship between the current through and the voltage across a capacitor?
A. Voltage and current are in phase
B. Voltage and current are 180 degrees out of phase
C. Voltage leads current by 90 degrees
D. Current leads voltage by 90 degrees

E5C10

When using rectangular coordinates to graph the impedance of a circuit, what does the vertical axis represent?
A. The voltage or current associated with the resistive component
B. The voltage or current associated with the reactive component
C. The sum of the reactive and resistive components
D. The difference between the resistive and reactive components

E5D11

How can the true power be determined in an AC circuit where the voltage and current are out of phase?
A. By multiplying the apparent power times the power factor
B. By dividing the reactive power by the power factor
C. By dividing the apparent power by the power factor
D. By multiplying the reactive power times the power factor

E6A16

What type of semiconductor material contains fewer free electrons than pure germanium or silicon crystals?
A. N-type
B. P-type
C. Superconductor-type
D. Bipolar-type

E6B06

In Figure E6-3, what is the schematic symbol for a varactor diode?
A. 8
B. 6
C. 2
D. 1

E6C09

In Figure E6-5, what is the schematic symbol for an OR gate?
A. 2
B. 3
C. 4
D. 6

E6D06

What function does a charge-coupled device (CCD) serve in a modern video camera?
A. It stores photogenerated charges as signals corresponding to pixels
B. It generates the horizontal pulses needed for electron beam scanning
C. It focuses the light used to produce a pattern of electrical charges corresponding to the image
D. It combines audio and video information to produce a composite RF signal

E6E12

What supply voltage do monolithic microwave integrated circuits (MMIC) amplifiers typically require?
A. 1 volt DC
B. 12 volts DC
C. 20 volts DC
D. 120 volts DC

E6F09

Which of the following materials is affected the most by photoconductivity?
A. A crystalline semiconductor
B. An ordinary metal
C. A heavy metal
D. A liquid semiconductor

E7A01

What is a bistable circuit?
A. An "AND" gate
B. An "OR" gate
C. A flip-flop
D. A clock

E7B15

What is the effect of intermodulation products in a linear power amplifier?
A. Transmission of spurious signals
B. Creation of parasitic oscillations
C. Low efficiency
D. All of the above

E7C11

Which of the following is the common name for a filter network which is equivalent to two L networks back-to-back?
A. Pi-L
B. Cascode
C. Omega
D. Pi

E7D06

What is the purpose of Q1 in the circuit shown in Figure E7-3?
A. It provides negative feedback to improve regulation
B. It provides a constant load for the voltage source
C. It increases the current-handling capability of the regulator
D. It provides D1 with current

E7E10

What is the process of detection?
A. The extraction of weak signals from noise
B. The recovery of information from a modulated RF signal
C. The modulation of a carrier
D. The mixing of noise with a received signal

E7F03

What is the function of a decade counter digital IC?
A. It produces one output pulse for every ten input pulses
B. It decodes a decimal number for display on a seven-segment LED display
C. It produces ten output pulses for every input pulse
D. It adds two decimal numbers together

E7G06

What steps are typically followed when selecting the external components for an op-amp RC active filter?
A. Standard capacitor values are chosen first, the resistances are calculated, and resistors of the nearest standard value are used
B. Standard resistor values are chosen first, the capacitances are calculated, and capacitors of the nearest standard value are used
C. Standard resistor and capacitor values are used, the circuit is tested, and additional resistors are added to make any needed adjustments
D. Standard resistor and capacitor values are used, the circuit is tested, and additional capacitors are added to make any needed adjustments

E7H20

What are the major spectral impurity components of phase-locked loop synthesizers?
A. Broadband noise
B. Digital conversion noise
C. Spurs at discrete frequencies
D. Nyquist limit noise

E8A06

What is the approximate ratio of PEP-to-average power in a typical voice-modulated single-sideband phone signal?
A. 2.5 to 1
B. 25 to 1
C. 1 to 1
D. 100 to 1

E8B02

How does the modulation index of a phase-modulated emission vary with RF carrier frequency (the modulated frequency)?
A. It increases as the RF carrier frequency increases
B. It decreases as the RF carrier frequency increases
C. It varies with the square root of the RF carrier frequency
D. It does not depend on the RF carrier frequency

E8C11

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?
A. Frequency hopping
B. Direct sequence
C. Time-domain frequency modulation
D. Frequency compandored spread-spectrum

E8D09

What is meant by circularly polarized electromagnetic waves?
A. Waves with an electric field bent into a circular shape
B. Waves with a rotating electric field
C. Waves that circle the Earth
D. Waves produced by a loop antenna

E9A11

How is antenna efficiency calculated?
A. (radiation resistance / transmission resistance) x 100%
B. (radiation resistance / total resistance) x 100%
C. (total resistance / radiation resistance) x 100%
D. (effective radiated power / transmitter output) x 100%

E9B03

In the antenna radiation pattern shown in Figure E9-1, what is the front-to-back ratio?
A. 36 dB
B. 18 dB
C. 24 dB
D. 14 dB

E9C01

What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/2-wavelength apart and fed 180 degrees out of phase?
A. A cardioid
B. Omnidirectional
C. A figure-8 broadside to the axis of the array
D. A figure-8 oriented along the axis of the array

E9D08

What happens to the bandwidth of an antenna as it is shortened through the use of loading coils?
A. It is increased
B. It is decreased
C. No change occurs
D. It becomes flat

E9E13

What is the purpose of a "Wilkinson divider"?
A. It divides the operating frequency of a transmitter signal so it can be used on a lower frequency band
B. It is used to feed high-impedance antennas from a low-impedance source
C. It divides power equally among multiple loads while preventing changes in one load from disturbing power flow to the others
D. It is used to feed low-impedance loads from a high-impedance source

E9F08

What is the term for the ratio of the actual speed at which a signal travels through a transmission line to the speed of light in a vacuum?
A. Velocity factor
B. Characteristic impedance
C. Surge impedance
D. Standing wave ratio

E9G01

Which of the following can be calculated using a Smith chart?
A. Impedance along transmission lines
B. Radiation resistance
C. Antenna radiation pattern
D. Radio propagation

E9H03

What is the effective radiated power of a repeater station with 200 watts transmitter power output, 2-dB feed line loss, 2.8-dB duplexer loss, 1.2-dB circulator loss and 7-dBd antenna gain?
A. 159 watts
B. 252 watts
C. 632 watts
D. 63.2 watts

G0A04

What does "time averaging" mean in reference to RF radiation exposure?
A. The average time of day when the exposure occurs
B. The average time it takes RF radiation to have any long-term effect on the body
C. The total time of the exposure
D. The total RF exposure averaged over a certain time

G0B12

What is the purpose of a transmitter power supply interlock?
A. To prevent unauthorized access to a transmitter
B. To guarantee that you cannot accidentally transmit out of band
C. To ensure that dangerous voltages are removed if the cabinet is opened
D. To shut off the transmitter if too much current is drawn

G1A16

Which of the following operating restrictions applies to amateur radio stations as a secondary service in the 60 meter band?
A. They must not cause harmful interference to stations operating in other radio services
B. They must transmit no more than 30 minutes during each hour to minimize harmful interference to other radio services
C. They must use lower sideband, suppressed-carrier, only
D. They must not exceed 2.0 kHz of bandwidth

G1B02

With which of the following conditions must beacon stations comply?
A. Identification must be in Morse Code
B. The frequency must be coordinated with the National Beacon Organization
C. The frequency must be posted on the Internet or published in a national periodical
D. There must be no more than one beacon signal in the same band from a single

G1C05 97.313]

What is the maximum transmitting power a station with a General Class control operator may use on the 28 MHz band?
A. 100 watts PEP output
B. 1000 watts PEP output
C. 1500 watts PEP output
D. 2000 watts PEP output

G1D04

Which of the following are requirements for administering a Technician Class operator examination?
A. At Least three VEC-accredited General Class or higher VEs must be present
B. At least two VEC-accredited General Class or higher VEs must be present
C. At least two General Class or higher VEs must be present, but only one need be VEC accredited
D. At least three VEs of Technician Class or higher must be present

G1E04 97.303]

Which of the following conditions require an amateur radio station to take specific steps to avoid harmful interference to other users or facilities?
A. When operating within one mile of an FCC Monitoring Station
B. When using a band where the amateur service is secondary
C. When a station is transmitting spread spectrum emissions
D. All of these answers are correct

G2A04

Which mode is most commonly used for voice communications on the 17 and 12 meter bands?
A. Upper Sideband
B. Lower Sideband
C. Vestigial Sideband
D. Double Sideband

G2B12

What is a practical way to avoid harmful interference when selecting a frequency to call CQ using phone?
A. Ask if the frequency is in use, say your callsign, and listen for a response
B. Keep your CQ to less than 2 minutes in length to avoid interference to contacts that may be in progress
C. Listen for 2 minutes before calling CQ to avoid interference to contacts that may be in progress
D. Call CQ at low power first and if there is no indication of interference, increase

G2C03

When may the FCC restrict normal frequency operations of amateur stations participating in RACES?
A. When they declare a temporary state of communication emergency
B. When they seize your equipment for use in disaster communications
C. Only when all amateur stations are instructed to stop transmitting
D. When the President's War Emergency Powers have been invoked

G2D05

What is the most useful type of map to use when orienting a directional HF antenna toward a distant station?
A. Azimuthal projection
B. Mercator projection
C. Polar projection
D. Stereographic projection

G2E10

What is a major advantage of MFSK16 compared to other digital modes?
A. It is much higher speed than RTTY
B. It is much narrower bandwidth than most digital modes
C. It has built-in error correction
D. It offers good performance in weak signal environment without error correction

G2F04

What does it mean when a CW operator sends "CL" at the end of a transmission?
A. Keep frequency clear
B. Operating full break-in
C. Listening only for a specific station or stations
D. Closing station

G3A06

What is a geomagnetic disturbance?
A. A sudden drop in the solar-flux index
B. A shifting of the Earth's magnetic pole
C. Ripples in the ionosphere
D. A significant change in the Earth's magnetic field over a short period of time

G3B10

What is the maximum distance along the Earth's surface that is normally covered in one hop using the E region?
A. 180 miles
B. 1,200 miles
C. 2,500 miles
D. 12,000 miles

G3C10

Which of the following might be an indication that signals heard on the HF bands are being received via scatter propagation?
A. The communication is during a sunspot maximum
B. The communication is during a sudden ionospheric disturbance
C. The signal is heard on a frequency below the maximum usable frequency
D. The signal is heard on a frequency above the maximum usable frequency

G4A12

What type of signals are used to conduct a two-tone test?
A. Two audio signals of the same frequency shifted 90-degrees
B. Two non-harmonically related audio signals
C. Two swept frequency tones
D. Two audio frequency range square wave signals of equal amplitude

G4B06

What signal source is connected to the vertical input of a monitoring oscilloscope when checking the quality of a transmitted signal?
A. The local oscillator of the transmitter
B. The audio input of the transmitter
C. The transmitter balanced mixer output
D. The attenuated RF output of the transmitter

G4C08

Which of the following is a reason to place ferrite beads around audio cables to reduce common mode RF interference?
A. They act as a series inductor
B. They act as a shunt capacitor
C. They lower the impedance of the cable
D. They increase the admittance of the cable

G4D03

Which of the following can be the result of an incorrectly adjusted speech processor?
A. Distorted speech
B. Splatter
C. Excessive background pickup
D. All of these answers are correct

G4E12

Which of the following is a primary reason for not placing a gasoline-fueled generator inside an occupied area?
A. Danger of carbon monoxide poisoning
B. Danger of engine over torque
C. Lack of oxygen for adequate combustion
D. Lack of nitrogen for adequate combustion

G5A14

Which of the following describes one method of impedance matching between two AC circuits?
A. Insert an LC network between the two circuits
B. Reduce the power output of the first circuit
C. Increase the power output of the first circuit
D. Insert a circulator between the two circuits

G5B14

What is the output PEP from a transmitter if an oscilloscope measures 500 volts peak-to-peak across a 50-ohm resistor connected to the transmitter output?
A. 8.75 watts
B. 625 watts
C. 2500 watts
D. 5000 watts

G5C07

What is the turns ratio of a transformer used to match an audio amplifier having a 600-ohm output impedance to a speaker having a 4-ohm impedance?
A. 12.2 to 1
B. 24.4 to 1
C. 150 to 1
D. 300 to 1

G6A06

What is the main disadvantage of using a conventional wire-wound resistor in a resonant circuit?
A. The resistor's tolerance value would not be adequate for such a circuit
B. The resistor's inductance could detune the circuit
C. The resistor could overheat
D. The resistor's internal capacitance would detune the circuit

G6B09

Which of the following describes the construction of a MOSFET?
A. The gate is formed by a back-biased junction
B. The gate is separated from the channel with a thin insulating layer
C. The source is separated from the drain by a thin insulating later
D. The source is formed by depositing metal on silicon

G6C04

What is meant by the term ROM?
A. Resistor Operated Memory
B. Read Only Memory
C. Random Operational Memory
D. Resistant to Overload Memory

G7A22

Which symbol in figure G7-1 represents a variable capacitor?
A. Symbol 2
B. Symbol 11
C. Symbol 5
D. Symbol 12

G7B02

Why do digital circuits use the binary number system?
A. Binary "ones" and "zeros" are easy to represent with an "on" or "off" state
B. The binary number system is most accurate
C. Binary numbers are more compatible with analog circuitry
D. All of these answers are correct

G8A01

What is the name of the process that changes the envelope of an RF wave to convey information?
A. Phase modulation
B. Frequency modulation
C. Spread Spectrum modulation
D. Amplitude modulation

G8B04

What is the name of the stage in a VHF FM transmitter that selects a harmonic of an HF signal to reach the desired operating frequency?
A. Mixer
B. Reactance modulator
C. Pre-emphasis network
D. Multiplier

G9A09

What standing-wave-ratio will result from the connection of a 50-ohm feed line to a non-reactive load having a 200-ohm impedance?
A. 4:1
B. 1:4
C. 2:1
D. 1:2

G9B05

How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?
A. If the antenna is too high, the pattern becomes unpredictable
B. Antenna height has no effect on the pattern
C. If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
D. If the antenna is less than 1/2 wavelength high, radiation off the ends of the

G9C18

Which of the following antenna types consists of a driven element and some combination of parasitically excited reflector and/or director elements?
A. A collinear array
B. A rhombic antenna
C. A double-extended Zepp antenna
D. A Yagi antenna

G9D06

Which of the following is an advantage of a log periodic antenna?
A. Wide bandwidth
B. Higher gain per element than a Yagi antenna
C. Harmonic suppression
D. Polarization diversity

T0A13

What kind of hazard might exist in a power supply when it isturned off and disconnected?
A. Static electricity could damage the grounding system
B. Circulating currents inside the transformer might cause damage
C. The fuse might blow if you remove the cover
D. You might receive an electric shock from stored charge in largecapacitors

T0B09

What is the most important safety rule to remember when using acrank-up tower?
A. This type of tower must never be painted
B. Crank up towers must be raised and lowered frequently to keepthem properly lubricated
C. Winch cables must be specially rated for use on this type oftower
D. A crank-up tower should never be climbed unless it is in thefully lowered position

T0C01

What type of radiation are VHF and UHF radio signals?
A. Gamma radiation
B. Ionizing radiation
C. Alpha radiation
D. Non-ionizing radiation

T1A03 [97.501]

What classes of US amateur radio licenses may currently be earnedby examination?
A. Novice, Technician, General, Advanced
B. Technician, General, Advanced
C. Technician, General, Extra
D. Technician, Tech Plus, General

T1B02 [97.301]

What is the purpose of ITU Regions?
A. They are used to assist in the management of frequencyallocations
B. They are useful when operating maritime mobile
C. They are used in call sign assignments
D. They must be used after your call sign to indicate yourlocation

T1C01

What is required before you can control an amateur station in theUS?
A. You must hold an FCC restricted operator's permit for alicensed radio station
B. You must submit an FCC Form 605 with a license examination fee
C. You must be named in the FCC amateur license database, or be analien with reciprocal operating authorization
D. The FCC must issue you a Certificate of Successful Completionof Amateur Training

T1D10 [97.23]

The FCC requires which address to be kept up to date on theUniversal Licensing System database?
A. The station location address
B. The station licensee mailing address
C. The station location address and mailing address
D. The station transmitting location address

T2A03 [97.217]

When is the transmission of codes or ciphers allowed to hide themeaning of a message transmitted by an amateur station?
A. Only during contests
B. Only when operating mobile
C. Only when transmitting control commands to space stations orradio control craft
D. Only when frequencies above 1280 MHz are used

T2B07

What is a permissible way to identify your station when you arespeaking to another amateur operator using a language other thanEnglish?
A. You must identify using the official version of the foreignlanguage
B. Identification is not required when using other languages
C. You must identify using the English language
D. You must identify using phonetics

T2C03

What minimum class of amateur license must you hold to be acontrol operator of a repeater station?
A. Technician Plus
B. Technician
C. General
D. Amateur Extra

T2D10

Why are unlicensed persons in your family not allowed to transmiton your amateur station if you are not there?
A. They must not use your equipment without your permission
B. They must be licensed before they are allowed to be controloperators
C. They must know how to use proper procedures and Q signals
D. They must know the right frequencies and emissions fortransmitting

T3A09

Why should you avoid using cute phrases or word combinations toidentify your station?
A. They are not easily understood by some operators
B. They might offend some operators
C. They do not meet FCC identification requirements
D. They might be interpreted as codes or ciphers intended toobscure your identification

T3B10

What emission modes are permitted in the restricted sub-band at144.0-144.1 MHz?
A. CW only
B. CW and RTTY
C. SSB only
D. CW and SSB

T3C08

Where can an official list be found of prohibited obscene andindecent words that should not be used in amateur radio?
A. On the FCC web site
B. There is no official list of prohibited obscene and indecentwords
C. On the Department of Commerce web site
D. The official list is in public domain and found in all amateurstudy guides

T3D09

What rules apply to your station when using amateur radio at therequest of public service officials or at the scene of anemergency?
A. RACES
B. ARES
C. FCC
D. FEMA

T4A07

What is the basic unit of resistance?
A. The volt
B. The watt
C. The ampere
D. The ohm

T4B06

How does the wavelength of a radio wave relate to its frequency?
A. The wavelength gets longer as the frequency increases
B. The wavelength gets shorter as the frequency increases
C. There is no relationship between wavelength and frequency
D. The wavelength depends on the bandwidth of the signal

T4C07

What is the nominal voltage per cell of a fully charged nickel-cadmium battery?
A. 1.0 volts
B. 1.2 volts
C. 1.5 volts
D. 2.2 volts

T4D01

What formula is used to calculate current in a circuit?
A. Current (I) equals voltage (E) multiplied by resistance (R)
B. Current (I) equals voltage (E) divided by resistance (R)
C. Current (I) equals voltage (E) added to resistance (R)
D. Current (I) equals voltage (E) minus resistance (R)

T4E04

How much power is being used in a circuit when the voltage is 120volts DC and the current is 2.5 amperes?
A. 1440 watts
B. 300 watts
C. 48 watts
D. 30 watts

T5A10

What can be used to connect a radio with a computer for datatransmission?
A. Balun
B. Sound Card
C. Impedance matcher
D. Autopatch

T5B07

What is the purpose of the buttons labeled "up" and "down" on manymicrophones?
A. To allow easy frequency or memory selection
B. To raise or lower the internal antenna
C. To set the battery charge rate
D. To upload or download messages

T5C11

What is the term for a series of repeaters that can be connectedto one another to provide users with a wider coverage?
A. Open repeater system
B. Closed repeater system
C. Linked repeater system
D. Locked repeater system

T5D12

What might be the problem if you receive a report that your signalthrough the repeater is distorted or weak?
A. Your transmitter may be slightly off frequency
B. Your batteries may be running low
C. You could be in a bad location
D. All of these answers are correct

T6A09

What is the approximate bandwidth of a single-sideband voicesignal?
A. 1 kHz
B. 2 kHz
C. Between 3 and 6 kHz
D. Between 2 and 3 kHz

T6B08

What are you listening to if you hear a brief tone and then astation from Russia calling CQ on a 2-meter repeater?
A. An ionospheric band opening on VHF
B. A prohibited transmission
C. An Internet linked DX station
D. None of these answers are correct

T6C07

What is PSK31?
A. A high-rate data transmission mode used to transmit files
B. A method of reducing noise interference to FM signals
C. A type of television signal
D. A low-rate data transmission mode that works well in noisyconditions

T7A07

What is a popular operating activity that involves contacting asmany stations as possible during a specified period of time?
A. Contesting
B. Net operations
C. Public service events
D. Simulated emergency exercises

T7B03

What is something you can do when using an amateur radiosatellite?
A. Listen to the Space Shuttle
B. Get global positioning information
C. Make autopatch calls
D. Talk to amateur radio operators in other countries

T8A05

What is one reason for using tactical call signs such as "commandpost" or "weather center" during an emergency?
A. They help to keep the general public informed
B. They are more efficient and help coordinate public-servicecommunications
C. They are required by the FCC
D. They increase goodwill and sound professional

T8B04

What is the primary function of ARES in relation to emergencyactivities?
A. ARES organizations are restricted to serving local, state,and federal government emergency management agencies
B. ARES supports agencies like the Red Cross, SalvationArmy, and National Weather Service
C. ARES groups work only with local school districts
D. ARES supports local National Guard units

T8C07

What should the net control station do if someone breaks in withemergency traffic?
A. Ask them to wait until the roll has been called
B. Stop all net activity until the emergency has been handled
C. Ask the station to call the local police and then resumenormal net activities
D. Ask them to move off your net frequency immediately

T9A11

What is the approximate length, in inches, of a quarter-wavelengthvertical antenna for 146 MHz?
A. 112 inches
B. 50 inches
C. 19 inches
D. 12 inches

T9B11

Why do VHF and UHF Radio signals usually travel about a thirdfarther than the visual line of sight distance between 2 stations?
A. Radio signals move somewhat faster than the speed of light andtravel farther in the same amount of time
B. Radio waves are not blocked by dust particles
C. The Earth seems less curved to radio waves than to light
D. Radio waves are blocked by dust particles

T9C03

What might be indicated by erratic changes in SWR readings?
A. The transmitter is being modulated
B. A loose connection in your antenna or feedline
C. The transmitter is being over modulated
D. Interference from other stations is distorting your signal