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Questions in US Amateur Radio - Technician 2010

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NameQuestion Study
T0A01Which is a commonly accepted value for the lowest voltage that can cause a dangerous electric shock?Start
T0A02How does current flowing through the body cause a health hazard?Start
T0A03What is connected to the green wire in a three-wire electrical AC plug?Start
T0A04What is the purpose of a fuse in an electrical circuit?Start
T0A05Why is it unwise to install a 20-ampere fuse in the place of a 5-ampere fuse?Start
T0A06What is a good way to guard against electrical shock at your station?Start
T0A07Which of these precautions should be taken when installing devices for lightning protection in a coaxial cable feedline?Start
T0A08What is one way to recharge a 12-volt lead-acid station battery if the commercial power is out?Start
T0A09What kind of hazard is presented by a conventional 12-volt storage battery?Start
T0A10What can happen if a lead-acid storage battery is charged or discharged too quickly?Start
T0A11Which of the following is good practice when installing ground wires on a tower for lightning protection?Start
T0A12What kind of hazard might exist in a power supply when it is turned off and disconnected?Start
T0A13What safety equipment should always be included in home-built equipment that is powered from 120V AC power circuits?Start
T0B01When should members of a tower work team wear a hard hat and safety glasses?Start
T0B02What is a good precaution to observe before climbing an antenna tower?Start
T0B03Under what circumstances is it safe to climb a tower without a helper or observer?Start
T0B04Which of the following is an important safety precaution to observe when putting up an antenna tower?Start
T0B05What is the purpose of a gin pole?Start
T0B06What is the minimum safe distance from a power line to allow when installing an antenna?Start
T0B07Which of the following is an important safety rule to remember when using a crank-up tower?Start
T0B08What is considered to be a proper grounding method for a tower?Start
T0B09Why should you avoid attaching an antenna to a utility pole?Start
T0B10Which of the following is true concerning grounding conductors used for lightning protection?Start
T0B11Which of the following establishes grounding requirements for an amateur radio tower or antenna?Start
T0C01What type of radiation are VHF and UHF radio signals?Start
T0C02Which of the following frequencies has the lowest Maximum Permissible Exposure limit?Start
T0C03What is the maximum power level that an amateur radio station may use at VHF frequencies before an RF exposure evaluation is required?Start
T0C04What factors affect the RF exposure of people near an amateur station antenna?Start
T0C05Why do exposure limits vary with frequency?Start
T0C06Which of the following is an acceptable method to determine that your station complies with FCC RF exposure regulations?Start
T0C07What could happen if a person accidentally touched your antenna while you were transmitting?Start
T0C08Which of the following actions might amateur operators take to prevent exposure to RF radiation in excess of FCC-supplied limits?Start
T0C09How can you make sure your station stays in compliance with RF safety regulations?Start
T0C10Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?Start
T0C11What is meant by "duty cycle" when referring to RF exposure?Start
T1A01For whom is the Amateur Radio Service intended?Start
T1A02What agency regulates and enforces the rules for the Amateur Radio Service in the United States?Start
T1A03Which part of the FCC rules contains the rules and regulations governing the Amateur Radio Service?Start
T1A04Which of the following meets the FCC definition of harmful interference?Start
T1A05What is the FCC Part 97 definition of a space station?Start
T1A06What is the FCC Part 97 definition of telecommand?Start
T1A08Which of the following entities recommends transmit/receive channels and other parameters for auxiliary and repeater stations?Start
T1A09Who selects a Frequency Coordinator?Start
T1A10What is the FCC Part 97 definition of an amateur station?Start
T1A11Which of the following stations transmits signals over the air from a remote receive site to a repeater for retransmission?Start
T1B01What is the ITU?Start
T1B02North American amateur stations are located in which ITU region?Start
T1B03Which frequency is within the 6 meter band?Start
T1B04Which amateur band are you using when your station is transmitting on 146.52 MHz?Start
T1B05Which 70 cm frequency is authorized to a Technician Class license holder operating in ITU Region 2?Start
T1B06Which 23 cm frequency is authorized to a Technician Class operator license?Start
T1B07What amateur band are you using if you are transmitting on 223.50 MHz?Start
T1B08What do the FCC rules mean when an amateur frequency band is said to be available on a secondary basis?Start
T1B09Why should you not set your transmit frequency to be exactly at the edge of an amateur band or sub-band?Start
T1B10Which of the bands available to Technician Class operators have mode-restricted sub-bands?Start
T1B11What emission modes are permitted in the mode-restricted sub-bands at 50.0 to 50.1 MHz and 144.0 to 144.1 MHz?Start
T1C01Which type of call sign has a single letter in both the prefix and suffix?Start
T1C02Which of the following is a valid US amateur radio station call sign?Start
T1C03What types of international communications are permitted by an FCC-licensed amateur station?Start
T1C04When are you allowed to operate your amateur station in a foreign country?Start
T1C05What must you do if you are operating on the 23 cm band and learn that you are interfering with a radiolocation station outside the United States?Start
T1C06From which of the following may an FCC-licensed amateur station transmit, in addition to places where the FCC regulates communications?Start
T1C07What may result when correspondence from the FCC is returned as undeliverable because the grantee failed to provide the correct mailing address?Start
T1C08What is the normal term for an FCC-issued primary station/operator license grant?Start
T1C09What is the grace period following the expiration of an amateur license within which the license may be renewed?Start
T1C10How soon may you operate a transmitter on an amateur service frequency after you pass the examination required for your first amateur radio license?Start
T1C11If your license has expired and is still within the allowable grace period, may you continue to operate a transmitter on amateur service frequencies?Start
T1D01With which countries are FCC-licensed amateur stations prohibited from exchanging communications?Start
T1D02On which of the following occasions may an FCC-licensed amateur station exchange messages with a U.S. military station?Start
T1D03When is the transmission of codes or ciphers allowed to hide the meaning of a message transmitted by an amateur station?Start
T1D04What is the only time an amateur station is authorized to transmit music?Start
T1D05When may amateur radio operators use their stations to notify other amateurs of the availability of equipment for sale or trade?Start
T1D06Which of the following types of transmissions are prohibited?Start
T1D07When is an amateur station authorized to automatically retransmit the radio signals of other amateur stations?Start
T1D08When may the control operator of an amateur station receive compensation for operating the station?Start
T1D09Under 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?Start
T1D10What is the meaning of the term broadcasting in the FCC rules for the amateur services?Start
T1D11Which of the following types of communications are permitted in the Amateur Radio Service?Start
T1E01When must an amateur station have a control operator?Start
T1E02Who is eligible to be the control operator of an amateur station?Start
T1E03Who must designate the station control operator?Start
T1E04What determines the transmitting privileges of an amateur station?Start
T1E05What is an amateur station control point?Start
T1E06Under which of the following types of control is it permissible for the control operator to be at a location other than the control point?Start
T1E07When the control operator is not the station licensee, who is responsible for the proper operation of the station?Start
T1E08What type of control is being used for a repeater when the control operator is not present at a control point?Start
T1E09What type of control is being used when transmitting using a handheld radio?Start
T1E10What type of control is used when the control operator is not at the station location but can indirectly manipulate the operating adjustments of a station?Start
T1E11Who does the FCC presume to be the control operator of an amateur station, unless documentation to the contrary is in the station records?Start
T1F01What type of identification is being used when identifying a station on the air as “Race Headquarters”?Start
T1F02When using tactical identifiers, how often must your station transmit the station’s FCC-assigned call sign?Start
T1F03When is an amateur station required to transmit its assigned call sign?Start
T1F04Which of the following is an acceptable language for use for station identification when operating in a phone sub-band?Start
T1F05What method of call sign identification is required for a station transmitting phone signals?Start
T1F06Which of the following formats of a self-assigned indicator is acceptable when identifying using a phone transmission?Start
T1F07Which of the following restrictions apply when appending a self-assigned call sign indicator?Start
T1F08When may a Technician Class licensee be the control operator of a station operating in an exclusive Extra Class operator segment of the amateur bands?Start
T1F09What type of amateur station simultaneously retransmits the signal of another amateur station on a different channel or channels?Start
T1F10Who is accountable should a repeater inadvertently retransmit communications that violate the FCC rules?Start
T1F11To which foreign stations do the FCC rules authorize the transmission of non-emergency third party communications?Start
T1F12How many persons are required to be members of a club for a club station license to be issued by the FCC?Start
T1F13When must the station licensee make the station and its records available for FCC inspection?Start
T2A01What is the most common repeater frequency offset in the 2 meter band?Start
T2A02What is the national calling frequency for FM simplex operations in the 70 cm band?Start
T2A03What is a common repeater frequency offset in the 70 cm band?Start
T2A04What is an appropriate way to call another station on a repeater if you know the other station's call sign?Start
T2A05What should you transmit when responding to a call of CQ?Start
T2A06What must an amateur operator do when making on-air transmissions to test equipment or antennas?Start
T2A07Which of the following is true when making a test transmission?Start
T2A08What is the meaning of the procedural signal "CQ"?Start
T2A09What brief statement is often used in place of "CQ" to indicate that you are listening on a repeater?Start
T2A10What is a band plan, beyond the privileges established by the FCC?Start
T2A11What are the FCC rules regarding power levels used in the amateur bands?Start
T2B01What is the term used to describe an amateur station that is transmitting and receiving on the same frequency?Start
T2B02What is the term used to describe the use of a sub-audible tone transmitted with normal voice audio to open the squelch of a receiver?Start
T2B03Which of the following describes the muting of receiver audio controlled solely by the presence or absence of an RF signal?Start
T2B04Which of the following common problems might cause you to be able to hear but not access a repeater even when transmitting with the proper offset?Start
T2B05What determines the amount of deviation of an FM signal?Start
T2B06What happens when the deviation of an FM transmitter is increased?Start
T2B07What should you do if you receive a report that your station’s transmissions are causing splatter or interference on nearby frequencies?Start
T2B08What is the proper course of action if your station’s transmission unintentionally interferes with another station?Start
T2B09Which of the following methods is encouraged by the FCC when identifying your station when using phone?Start
T2B10What is the "Q" signal used to indicate that you are receiving interference from other stations?Start
T2B11What is the "Q" signal used to indicate that you are changing frequency?Start
T2C01What set of rules applies to proper operation of your station when using amateur radio at the request of public service officials?Start
T2C04What do RACES and ARES have in common?Start
T2C05What is the Radio Amateur Civil Emergency Service?Start
T2C06Which of the following is common practice during net operations to get the immediate attention of the net control station when reporting an emergency?Start
T2C07What should you do to minimize disruptions to an emergency traffic net once you have checked in?Start
T2C08What is usually considered to be the most important job of an amateur operator when handling emergency traffic messages?Start
T2C09When may an amateur station use any means of radio communications at its disposal for essential communications in connection with immediate safety of human life and protection of property?Start
T2C10What is the preamble in a formal traffic message?Start
T2C11What is meant by the term "check" in reference to a formal traffic message?Start
T3A01What should you do if another operator reports that your station’s 2 meter signals were strong just a moment ago, but now they are weak or distorted?Start
T3A02Why are UHF signals often more effective from inside buildings than VHF signals?Start
T3A03What antenna polarization is normally used for long-distance weak-signal CW and SSB contacts using the VHF and UHF bands?Start
T3A04What can happen if the antennas at opposite ends of a VHF or UHF line of sight radio link are not using the same polarization?Start
T3A05When using a directional antenna, how might your station be able to access a distant repeater if buildings or obstructions are blocking the direct line of sight path?Start
T3A06What term is commonly used to describe the rapid fluttering sound sometimes heard from mobile stations that are moving while transmitting?Start
T3A07What type of wave carries radio signals between transmitting and receiving stations?Start
T3A08What is the cause of irregular fading of signals from distant stations during times of generally good reception?Start
T3A09Which of the following is a common effect of "skip" reflections between the Earth and the ionosphere?Start
T3A10What may occur if VHF or UHF data signals propagate over multiple paths?Start
T3A11Which part of the atmosphere enables the propagation of radio signals around the world?Start
T3B01What is the name for the distance a radio wave travels during one complete cycle?Start
T3B02What term describes the number of times per second that an alternating current reverses direction?Start
T3B03What are the two components of a radio wave?Start
T3B04How fast does a radio wave travel through free space?Start
T3B05How does the wavelength of a radio wave relate to its frequency?Start
T3B06What is the formula for converting frequency to wavelength in meters?Start
T3B07What property of radio waves is often used to identify the different frequency bands?Start
T3B08What are the frequency limits of the VHF spectrum?Start
T3B09What are the frequency limits of the UHF spectrum?Start
T3B10What frequency range is referred to as HF?Start
T3B11What is the approximate velocity of a radio wave as it travels through free space?Start
T3C01Why are "direct" (not via a repeater) UHF signals rarely heard from stations outside your local coverage area?Start
T3C02Which of the following might be happening when VHF signals are being received from long distances?Start
T3C03What is a characteristic of VHF signals received via auroral reflection?Start
T3C04Which of the following propagation types is most commonly associated with occasional strong over-the-horizon signals on the 10, 6, and 2 meter bands?Start
T3C05What is meant by the term "knife-edge" propagation?Start
T3C06What mode is responsible for allowing over-the-horizon VHF and UHF communications to ranges of approximately 300 miles on a regular basis?Start
T3C07What band is best suited to communicating via meteor scatter?Start
T3C08What causes "tropospheric ducting"?Start
T3C09What is generally the best time for long-distance 10 meter band propagation?Start
T3C10What is the radio horizon?Start
T3C11Why do VHF and UHF radio signals usually travel somewhat farther than the visual line of sight distance between two stations?Start
T4A01Which of the following is true concerning the microphone connectors on amateur transceivers?Start
T4A02What could be used in place of a regular speaker to help you copy signals in a noisy area?Start
T4A03Which is a good reason to use a regulated power supply for communications equipment?Start
T4A04Where must a filter be installed to reduce harmonic emissions?Start
T4A05What 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?Start
T4A06Which of the following would be connected between a transceiver and computer in a packet radio station?Start
T4A07How is the computer’s sound card used when conducting digital communications using a computer?Start
T4A08Which type of conductor is best to use for RF grounding?Start
T4A09Which would you use to reduce RF current flowing on the shield of an audio cable?Start
T4A10What is the source of a high-pitched whine that varies with engine speed in a mobile transceiver’s receive audio?Start
T4A11Where should a mobile transceiver’s power negative connection be made?Start
T4B01What may happen if a transmitter is operated with the microphone gain set too high?Start
T4B02Which of the following can be used to enter the operating frequency on a modern transceiver?Start
T4B03What is the purpose of the squelch control on a transceiver?Start
T4B04What is a way to enable quick access to a favorite frequency on your transceiver?Start
T4B05Which of the following would reduce ignition interference to a receiver?Start
T4B06Which of the following controls could be used if the voice pitch of a single-sideband signal seems too high or low?Start
T4B07What does the term "RIT" mean?Start
T4B08What is the advantage of having multiple receive bandwidth choices on a multimode transceiver?Start
T4B09Which of the following is an appropriate receive filter to select in order to minimize noise and interference for SSB reception?Start
T4B10Which of the following is an appropriate receive filter to select in order to minimize noise and interference for CW reception?Start
T4B11Which of the following describes the common meaning of the term “repeater offset”?Start
T5A01Electrical current is measured in which of the following units?Start
T5A02Electrical power is measured in which of the following units?Start
T5A03What is the name for the flow of electrons in an electric circuit?Start
T5A04What is the name for a current that flows only in one direction?Start
T5A05What is the electrical term for the electromotive force (EMF) that causes electron flow?Start
T5A06How much voltage does a mobile transceiver usually require?Start
T5A07Which of the following is a good electrical conductor?Start
T5A08Which of the following is a good electrical insulator?Start
T5A09What is the name for a current that reverses direction on a regular basis?Start
T5A10Which term describes the rate at which electrical energy is used?Start
T5A11What is the basic unit of electromotive force?Start
T5B01How many milliamperes is 1.5 amperes?Start
T5B02What is another way to specify a radio signal frequency of 1,500,000 hertz?Start
T5B03How many volts are equal to one kilovolt?Start
T5B04How many volts are equal to one microvolt?Start
T5B05Which of the following is equivalent to 500 milliwatts?Start
T5B06If an ammeter calibrated in amperes is used to measure a 3000-milliampere current, what reading would it show?Start
T5B07If a frequency readout calibrated in megahertz shows a reading of 3.525 MHz, what would it show if it were calibrated in kilohertz?Start
T5B08How many microfarads are 1,000,000 picofarads?Start
T5B09What is the approximate amount of change, measured in decibels (dB), of a power increase from 5 watts to 10 watts?Start
T5B10What is the approximate amount of change, measured in decibels (dB), of a power decrease from 12 watts to 3 watts?Start
T5B11What is the approximate amount of change, measured in decibels (dB), of a power increase from 20 watts to 200 watts?Start
T5C01What is the ability to store energy in an electric field called?Start
T5C02What is the basic unit of capacitance?Start
T5C03What is the ability to store energy in a magnetic field called?Start
T5C04What is the basic unit of inductance?Start
T5C05What is the unit of frequency?Start
T5C06What is the abbreviation that refers to radio frequency signals of all types?Start
T5C07What is a usual name for electromagnetic waves that travel through space?Start
T5C08What is the formula used to calculate electrical power in a DC circuit?Start
T5C09How much power is being used in a circuit when the applied voltage is 13.8 volts DC and the current is 10 amperes?Start
T5C10How much power is being used in a circuit when the applied voltage is 12 volts DC and the current is 2.5 amperes?Start
T5C11How many amperes are flowing in a circuit when the applied voltage is 12 volts DC and the load is 120 watts?Start
T5D01What formula is used to calculate current in a circuit?Start
T5D02What formula is used to calculate voltage in a circuit?Start
T5D03What formula is used to calculate resistance in a circuit?Start
T5D04What is the resistance of a circuit in which a current of 3 amperes flows through a resistor connected to 90 volts?Start
T5D05What is the resistance in a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?Start
T5D06What is the resistance of a circuit that draws 4 amperes from a 12-volt source?Start
T5D07What is the current flow in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms?Start
T5D08What is the current flowing through a 100-ohm resistor connected across 200 volts?Start
T5D09What is the current flowing through a 24-ohm resistor connected across 240 volts?Start
T5D10What is the voltage across a 2-ohm resistor if a current of 0.5 amperes flows through it?Start
T5D11What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it?Start
T5D12What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?Start
T6A01What electrical component is used to oppose the flow of current in a DC circuit?Start
T6A02What type of component is often used as an adjustable volume control?Start
T6A03What electrical parameter is controlled by a potentiometer?Start
T6A04What electrical component stores energy in an electric field?Start
T6A05What type of electrical component consists of two or more conductive surfaces separated by an insulator?Start
T6A06What type of electrical component stores energy in a magnetic field?Start
T6A07What electrical component is usually composed of a coil of wire?Start
T6A08What electrical component is used to connect or disconnect electrical circuits?Start
T6A09What electrical component is used to protect other circuit components from current overloads?Start
T6A10What is the nominal voltage of a fully charged nickel-cadmium cell?Start
T6A11Which battery type is not rechargeable?Start
T6B01What class of electronic components is capable of using a voltage or current signal to control current flow?Start
T6B02What electronic component allows current to flow in only one direction?Start
T6B03Which of these components can be used as an electronic switch or amplifier?Start
T6B04Which of these components is made of three layers of semiconductor material?Start
T6B05Which of the following electronic components can amplify signals?Start
T6B06How is a semiconductor diode’s cathode lead usually identified?Start
T6B07What does the abbreviation "LED" stand for?Start
T6B08What does the abbreviation "FET" stand for?Start
T6B09What are the names of the two electrodes of a diode?Start
T6B10Which semiconductor component has an emitter electrode?Start
T6B11Which semiconductor component has a gate electrode?Start
T6B12What is the term that describes a transistor's ability to amplify a signal?Start
T6C01What is the name for standardized representations of components in an electrical wiring diagram?Start
T6C02What is component 1 in figure T1?Start
T6C03What is component 2 in figure T1?Start
T6C04What is component 3 in figure T1?Start
T6C05What is component 4 in figure T1?Start
T6C06What is component 6 in figure T2?Start
T6C07What is component 8 in figure T2?Start
T6C08What is component 9 in figure T2?Start
T6C09What is component 4 in figure T2?Start
T6C10What is component 3 in figure T3?Start
T6C11What is component 4 in figure T3?Start
T6C12What do the symbols on an electrical circuit schematic diagram represent?Start
T6C13Which of the following is accurately represented in electrical circuit schematic diagrams?Start
T6D01Which of the following devices or circuits changes an alternating current into a varying direct current signal?Start
T6D02What best describes a relay?Start
T6D03What type of switch is represented by item 3 in figure T2?Start
T6D04Which of the following can be used to display signal strength on a numeric scale?Start
T6D05What type of circuit controls the amount of voltage from a power supply?Start
T6D06What component is commonly used to change 120V AC house current to a lower AC voltage for other uses?Start
T6D07Which of the following is commonly used as a visual indicator?Start
T6D08Which of the following is used together with an inductor to make a tuned circuit?Start
T6D09What is the name of a device that combines several semiconductors and other components into one package?Start
T6D10What is the function of component 2 in Figure T1?Start
T6D11Which of the following is a common use of coaxial cable?Start
T7A01What is the function of a product detector?Start
T7A02What type of receiver is shown in Figure T6?Start
T7A03What is the function of a mixer in a superheterodyne receiver?Start
T7A04What circuit is pictured in Figure T7, if block 1 is a frequency discriminator?Start
T7A05What is the function of block 1 if figure T4 is a simple CW transmitter?Start
T7A06What device takes the output of a low-powered 28 MHz SSB exciter and produces a 222 MHz output signal?Start
T7A07If figure T5 represents a transceiver in which block 1 is the transmitter portion and block 3 is the receiver portion, what is the function of block 2?Start
T7A08Which of the following circuits combines a speech signal and an RF carrier?Start
T7A09Which of the following devices is most useful for VHF weak-signal communication?Start
T7A10What device increases the low-power output from a handheld transceiver?Start
T7A11Which of the following circuits demodulates FM signals?Start
T7A12Which term describes the ability of a receiver to discriminate between multiple signals?Start
T7A13Where is an RF preamplifier installed?Start
T7B01What can you do if you are told your FM handheld or mobile transceiver is over deviating?Start
T7B02What is meant by fundamental overload in reference to a receiver?Start
T7B03Which of the following may be a cause of radio frequency interference?Start
T7B04What is the most likely cause of interference to a non-cordless telephone from a nearby transmitter?Start
T7B05What is a logical first step when attempting to cure a radio frequency interference problem in a nearby telephone?Start
T7B06What should you do first if someone tells you that your station’s transmissions are interfering with their radio or TV reception?Start
T7B07Which of the following may be useful in correcting a radio frequency interference problem?Start
T7B08What should you do if a "Part 15" device in your neighbor’s home is causing harmful interference to your amateur station?Start
T7B09What could be happening if another operator reports a variable high-pitched whine on the audio from your mobile transmitter?Start
T7B10What might be the problem if you receive a report that your audio signal through the repeater is distorted or unintelligible?Start
T7B11What is a symptom of RF feedback in a transmitter or transceiver?Start
T7B12What does the acronym "BER" mean when applied to digital communications systems?Start
T7C01What is the primary purpose of a dummy load?Start
T7C02Which of the following instruments can be used to determine if an antenna is resonant at the desired operating frequency?Start
T7C03What, in general terms, is standing wave ratio (SWR)?Start
T7C04What reading on an SWR meter indicates a perfect impedance match between the antenna and the feedline?Start
T7C05What is the approximate SWR value above which the protection circuits in most solid-state transmitters begin to reduce transmitter power?Start
T7C06What does an SWR reading of 4:1 mean?Start
T7C07What happens to power lost in a feedline?Start
T7C08What instrument other than an SWR meter could you use to determine if a feedline and antenna are properly matched?Start
T7C09Which of the following is the most common cause for failure of coaxial cables?Start
T7C10Why should the outer jacket of coaxial cable be resistant to ultraviolet light?Start
T7C11What is a disadvantage of "air core" coaxial cable when compared to foam or solid dielectric types?Start
T7D01Which instrument would you use to measure electric potential or electromotive force?Start
T7D02What is the correct way to connect a voltmeter to a circuit?Start
T7D03How is an ammeter usually connected to a circuit?Start
T7D04Which instrument is used to measure electric current?Start
T7D05What instrument is used to measure resistance?Start
T7D06Which of the following might damage a multimeter?Start
T7D07Which of the following measurements are commonly made using a multimeter?Start
T7D08Which of the following types of solder is best for radio and electronic use?Start
T7D09What is the characteristic appearance of a "cold" solder joint?Start
T7D10What is probably happening when an ohmmeter, connected across a circuit, initially indicates a low resistance and then shows increasing resistance with time?Start
T7D11Which of the following precautions should be taken when measuring circuit resistance with an ohmmeter?Start
T8A01Which of the following is a form of amplitude modulation?Start
T8A02What type of modulation is most commonly used for VHF packet radio transmissions?Start
T8A03Which type of voice modulation is most often used for long-distance or weak signal contacts on the VHF and UHF bands?Start
T8A04Which type of modulation is most commonly used for VHF and UHF voice repeaters?Start
T8A05Which of the following types of emission has the narrowest bandwidth?Start
T8A06Which sideband is normally used for 10 meter HF, VHF and UHF single-sideband communications?Start
T8A07What is the primary advantage of single sideband over FM for voice transmissions?Start
T8A08What is the approximate bandwidth of a single sideband voice signal?Start
T8A09What is the approximate bandwidth of a VHF repeater FM phone signal?Start
T8A10What is the typical bandwidth of analog fast-scan TV transmissions on the 70 cm band?Start
T8A11What is the approximate maximum bandwidth required to transmit a CW signal?Start
T8B01Who may be the control operator of a station communicating through an amateur satellite or space station?Start
T8B02How much transmitter power should be used on the uplink frequency of an amateur satellite or space station?Start
T8B03Which of the following can be done using an amateur radio satellite?Start
T8B04Which amateur stations may make contact with an amateur station on the International Space Station using 2 meter and 70 cm band amateur radio frequencies?Start
T8B05What is a satellite beacon?Start
T8B06What can be used to determine the time period during which an amateur satellite or space station can be accessed?Start
T8B07With regard to satellite communications, what is Doppler shift?Start
T8B08What is meant by the statement that a satellite is operating in "mode U/V"?Start
T8B09What causes "spin fading" when referring to satellite signals?Start
T8B10What do the initials LEO tell you about an amateur satellite?Start
T8B11What is a commonly used method of sending signals to and from a digital satellite?Start
T8C01Which of the following methods is used to locate sources of noise interference or jamming?Start
T8C02Which of these items would be useful for a hidden transmitter hunt?Start
T8C03What popular operating activity involves contacting as many stations as possible during a specified period of time?Start
T8C04Which of the following is good procedure when contacting another station in a radio contest?Start
T8C05What is a grid locator?Start
T8C06For what purpose is a temporary "1 by 1" format (letter-number-letter) call sign assigned?Start
T8C07What is the maximum power allowed when transmitting telecommand signals to radio controlled models?Start
T8C08What is required in place of on-air station identification when sending signals to a radio control model using amateur frequencies?Start
T8C09How might you obtain a list of active nodes that use VoIP?Start
T8C10How do you select a specific IRLP node when using a portable transceiver?Start
T8C11What name is given to an amateur radio station that is used to connect other amateur stations to the Internet?Start
T8D01Which of the following is an example of a digital communications method?Start
T8D02What does the term APRS mean?Start
T8D03Which of the following is normally used when sending automatic location reports via amateur radio?Start
T8D04What type of transmission is indicated by the term NTSC?Start
T8D05Which of the following emission modes may be used by a Technician Class operator between 219 and 220 MHz?Start
T8D06What does the abbreviation PSK mean?Start
T8D07What is PSK31?Start
T8D08Which of the following may be included in packet transmissions?Start
T8D09What code is used when sending CW in the amateur bands?Start
T8D10Which of the following can be used to transmit CW in the amateur bands?Start
T8D11What is a "parity" bit?Start
T9A01What is a beam antenna?Start
T9A02Which of the following is true regarding vertical antennas?Start
T9A03Which of the following describes a simple dipole mounted so the conductor is parallel to the Earth's surface?Start
T9A04What is a disadvantage of the "rubber duck" antenna supplied with most handheld radio transceivers?Start
T9A05How would you change a dipole antenna to make it resonant on a higher frequency?Start
T9A06What type of antennas are the quad, Yagi, and dish?Start
T9A07What is a good reason not to use a "rubber duck" antenna inside your car?Start
T9A08What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?Start
T9A09What is the approximate length, in inches, of a 6 meter 1/2-wavelength wire dipole antenna?Start
T9A10In which direction is the radiation strongest from a half-wave dipole antenna in free space?Start
T9A11What is meant by the gain of an antenna?Start
T9B01Why is it important to have a low SWR in an antenna system that uses coaxial cable feedline?Start
T9B02What is the impedance of the most commonly used coaxial cable in typical amateur radio installations?Start
T9B03Why is coaxial cable used more often than any other feedline for amateur radio antenna systems?Start
T9B04What does an antenna tuner do?Start
T9B05What generally happens as the frequency of a signal passing through coaxial cable is increased?Start
T9B06Which of the following connectors is most suitable for frequencies above 400 MHz?Start
T9B07Which of the following is true of PL-259 type coax connectors?Start
T9B08Why should coax connectors exposed to the weather be sealed against water intrusion?Start
T9B09What might cause erratic changes in SWR readings?Start
T9B10What electrical difference exists between the smaller RG-58 and larger RG-8 coaxial cables?Start
T9B11Which of the following types of feedline has the lowest loss at VHF and UHF?Start