Technician Class License Exam Questions

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Subelement T0 Electrical safety: AC and DC power circuits; antenna installation; RF hazards
Group T0A Power circuits and hazards: hazardous voltages; fuses and circuit breakers; grounding; lightning protection; battery safety; electrical code compliance
T0A01 Which of the following is a safety hazard of a 12-volt storage battery?
T0A02 How does current flowing through the body cause a health hazard?
T0A03 What is connected to the green wire in a three-wire electrical AC plug?
T0A04 What is the purpose of a fuse in an electrical circuit?
T0A05 Why is it unwise to install a 20-ampere fuse in the place of a 5-ampere fuse?
T0A06 What is a good way to guard against electrical shock at your station?
T0A07 Which of these precautions should be taken when installing devices for lightning protection in a coaxial cable feed line?
T0A08 What safety equipment should always be included in home-built equipment that is powered from 120V AC power circuits?
T0A09 What kind of hazard is presented by a conventional 12-volt storage battery?
T0A10 What can happen if a lead-acid storage battery is charged or discharged too quickly?
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Group T0B Antenna safety: tower safety; erecting an antenna support; overhead power lines; installing an antenna
T0B01 When should members of a tower work team wear a hard hat and safety glasses?
T0B02 What is a good precaution to observe before climbing an antenna tower?
T0B03 Under what circumstances is it safe to climb a tower without a helper or observer?
T0B04 Which of the following is an important safety precaution to observe when putting up an antenna tower?
T0B05 What is the purpose of a gin pole?
T0B06 What is the minimum safe distance from a power line to allow when installing an antenna?
T0B07 Which of the following is an important safety rule to remember when using a crank-up tower?
T0B08 What is considered to be a proper grounding method for a tower?
T0B09 Why should you avoid attaching an antenna to a utility pole?
T0B10 Which of the following is true concerning grounding conductors used for lightning protection?
T0B11 Which of the following establishes grounding requirements for an amateur radio tower or antenna?
T0B12 Which of the following is good practice when installing ground wires on a tower for lightning protection?
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Group T0C RF hazards: radiation exposure; proximity to antennas; recognized safe power levels; exposure to others; radiation types; duty cycle
T0C01 What type of radiation are VHF and UHF radio signals?
T0C02 Which of the following frequencies has the lowest value for Maximum Permissible Exposure limit?
T0C03 What is the maximum power level that an amateur radio station may use at VHF frequencies before an RF exposure evaluation is required?
T0C04 What factors affect the RF exposure of people near an amateur station antenna?
T0C05 Why do exposure limits vary with frequency?
T0C06 Which of the following is an acceptable method to determine that your station complies with FCC RF exposure regulations?
T0C07 What could happen if a person accidentally touched your antenna while you were transmitting?
T0C08 Which of the following actions might amateur operators take to prevent exposure to RF radiation in excess of FCC-supplied limits?
T0C09 How can you make sure your station stays in compliance with RF safety regulations?
T0C10 Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?
T0C11 What is the definition of duty cycle during the averaging time for RF exposure?
T0C12 How does RF radiation differ from ionizing radiation (radioactivity)?
T0C13 If the averaging time for exposure is 6 minutes, how much power density is permitted if the signal is present for 3 minutes and absent for 3 minutes rather than being present for the entire 6 minutes?
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Subelement T1 FCC Rules, descriptions and definitions for the Amateur Radio Service, operator and station license responsibilities
Group T1A Amateur Radio Service: purpose and permissible use of the Amateur Radio Service; operator/primary station license grant; where FCC rules are codified; basis and purpose of FCC rules; meanings of basic terms used in FCC rules; interference; spectrum management
T1A01 [97.1] Which of the following is a purpose of the Amateur Radio Service as stated in the FCC rules and regulations?
T1A02 [97.1] Which agency regulates and enforces the rules for the Amateur Radio Service in the United States?
T1A03 Which part of the FCC regulations contains the rules governing the Amateur Radio Service?
T1A04 [97.3(a)(23)] Which of the following meets the FCC definition of harmful interference?
T1A05 [97.1 (e)] Which of the following is a purpose of the Amateur Radio Service rules and regulations as defined by the FCC?
T1A06 [97.101 (d), 97.303 (o)(2)] Which of the following services are protected from interference by amateur signals under all circumstances?
T1A07 [97.3(a)(46)] What is the FCC Part 97 definition of telemetry?
T1A08 [97.3(a)(22)] Which of the following entities recommends transmit/receive channels and other parameters for auxiliary and repeater stations?
T1A09 [97.3(a)(22)] Who selects a Frequency Coordinator?
T1A10 [97.3(a)(5)] What is the FCC Part 97 definition of an amateur station?
T1A11 [97.101 (d)] When is willful interference to other amateur radio stations permitted?
T1A12 Which of the following is a permissible use of the Amateur Radio Service?
T1A13 [97.3(a)(45)] What is the FCC Part 97 definition of telecommand?
T1A14 [97.303(d)] What 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?
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Group T1B Authorized frequencies: frequency allocations; ITU regions; emission modes; restricted sub-bands; spectrum sharing; transmissions near band edges
T1B01 What is the ITU?
T1B02 [97.301] Why are the frequency assignments for some U.S. Territories different from those in the 50 U.S. States?
T1B03 [97.301(a)] Which frequency is within the 6 meter band?
T1B04 [97.301(a)] Which amateur band are you using when your station is transmitting on 146.52 MHz?
T1B05 [97.301(a)] Which 70 cm frequency is authorized to a Technician Class license holder operating in ITU Region 2?
T1B06 [97.301(a)] Which 23 cm frequency is authorized to a Technician Class licensee?
T1B07 [97.301(a)] What amateur band are you using if you are transmitting on 223.50 MHz?
T1B08 [97.303] Which of the following is a result of the fact that the amateur service is secondary in some portions of the 70 cm band?
T1B09 [97.101(a), 97.301(a-e)] Why should you not set your transmit frequency to be exactly at the edge of an amateur band or sub-band?
T1B10 [97.301(e), 97.305(c)] Which of the bands above 30 MHz that are available to Technician Class operators have mode-restricted sub-bands?
T1B11 [97.301(a), 97.305 (a)(c)] What emission modes are permitted in the mode-restricted sub-bands at 50.0 to 50.1 MHz and 144.0 to 144.1 MHz?
T1B12 [97.301] Why are frequency assignments for U.S. stations operating maritime mobile not the same everywhere in the world?
T1B13 [97.305(c)] Which emission may be used between 219 and 220 MHz?
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Group T1C Operator licensing: operator classes; sequential, special event, and vanity call sign systems; international communications; reciprocal operation; station license and licensee; places where the amateur service is regulated by the FCC; name and address on FCC license database; license term; renewal; grace period
T1C01 [97.3(a)(11)(iii)] Which type of call sign has a single letter in both its prefix and suffix?
T1C02 Which of the following is a valid US amateur radio station call sign?
T1C03 [97.117] What types of international communications are permitted by an FCC-licensed amateur station?
T1C04 [97.107] When are you allowed to operate your amateur station in a foreign country?
T1C05 Which of the following is a vanity call sign which a technician class amateur operator might select if available?
T1C06 [97.5(a)(2)] From which of the following locations may an FCC-licensed amateur station transmit, in addition to places where the FCC regulates communications?
T1C07 [97.23] What may result when correspondence from the FCC is returned as undeliverable because the grantee failed to provide the correct mailing address?
T1C08 [97.25] What is the normal term for an FCC-issued primary station/operator amateur radio license grant?
T1C09 [97.21(a)(b)] What is the grace period following the expiration of an amateur license within which the license may be renewed?
T1C10 [97.5a] How soon after passing the examination for your first amateur radio license may you operate a transmitter on an amateur service frequency?
T1C11 [97.21(b)] If your license has expired and is still within the allowable grace period, may you continue to operate a transmitter on amateur service frequencies?
T1C12 [97.19] Who may select a desired call sign under the vanity call sign rules?
T1C13 [97.9(a), 97.17(a)] For which licenses classes are new licenses currently available from the FCC?
T1C14 [97.21(a) (1)] Who may select a vanity call sign for a club station?
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Group T1D Authorized and prohibited transmission: communications with other countries; music; exchange of information with other services; indecent language; compensation for use of station; retransmission of other amateur signals; codes and ciphers; sale of equipment; unidentified transmissions; broadcasting
T1D01 [97.111(a)(1)] With which countries are FCC-licensed amateur stations prohibited from exchanging communications?
T1D02 [97.111(a)(5)] On which of the following occasions may an FCC-licensed amateur station exchange messages with a U.S. military station?
T1D03 [97.211(b), 97.215(b)] When is the transmission of codes or ciphers that hide the meaning of a message allowed by an amateur station?
T1D04 [97.113(a)(4), 97.113(c)] What is the only time an amateur station is authorized to transmit music?
T1D05 [97.113(a)(3)(ii)] When may amateur radio operators use their stations to notify other amateurs of the availability of equipment for sale or trade?
T1D06 [97.113(a)(4)] What, if any, are the restrictions concerning transmission of language that may be considered indecent or obscene?
T1D07 [97.113(d)] What types of amateur stations can automatically retransmit the signals of other amateur stations?
T1D08 [97.113(a)(3)(iii)] In which of the following circumstances may the control operator of an amateur station receive compensation for operating the station?
T1D09 [97.113(5)(b)] 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?
T1D10 [97.3(a)(10)] What is the meaning of the term “broadcasting” in the FCC rules for the amateur services?
T1D11 [97.119(a)] When may an amateur station transmit without identifying?
T1D12 Under which of the following circumstances may an amateur radio station engage in broadcasting?
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Group T1E Control operator and control types: control operator required; eligibility; designation of control operator; privileges and duties; control point; local, automatic and remote control; location of control operator
T1E01 [97.7(a)] When is an amateur station permitted to transmit without a control operator?
T1E02 [97.7(a)] Who may a station licensee designate to be the control operator of an amateur station?
T1E03 [97.103(b)] Who must designate the station control operator?
T1E04 [97.103(b)] What determines the transmitting privileges of an amateur station?
T1E05 [97.3(a)(14)] What is an amateur station control point?
T1E06 [97.109(d)] Under what type of control do APRS network digipeaters operate?
T1E07 [97.103(a)] When the control operator is not the station licensee, who is responsible for the proper operation of the station?
T1E08 [97.3(a)(6), 97.205(d)] Which of the following is an example of automatic control?
T1E09 [97.109(b)] What type of control is being used when the control operator is at the control point?
T1E10 [97.3(a)(39)] Which of the following is an example of remote control as defined in Part 97?
T1E11 [97.103(a)] Who does the FCC presume to be the control operator of an amateur station, unless documentation to the contrary is in the station records?
T1E12 [97.119(e)] When, under normal circumstances, may a Technician Class licensee be the control operator of a station operating in an exclusive Extra Class operator segment of the amateur bands?
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Group T1F Station identification; repeaters; third party communications; club stations; FCC inspection
T1F01 What type of identification is being used when identifying a station on the air as Race Headquarters?
T1F02 [97.119 (a)] When using tactical identifiers such as “Race Headquarters” during a community service net operation, how often must your station transmit the station's FCC-assigned call sign?
T1F03 [97.119(a)] When is an amateur station required to transmit its assigned call sign?
T1F04 [97.119(b)(2)] Which of the following is an acceptable language to use for station identification when operating in a phone sub-band?
T1F05 [97.119(b)(2)] What method of call sign identification is required for a station transmitting phone signals?
T1F06 [97.119(c)] Which of the following formats of a self-assigned indicator is acceptable when identifying using a phone transmission?
T1F07 [97.115(a)(2)] Which of the following restrictions apply when a non-licensed person is allowed to speak to a foreign station using a station under the control of a Technician Class control operator?
T1F08 [97.119(f)] Which indicator is required by the FCC to be transmitted after a station call sign?
T1F09 [97.3(a)(40)] What type of amateur station simultaneously retransmits the signal of another amateur station on a different channel or channels?
T1F10 [97.205(g)] Who is accountable should a repeater inadvertently retransmit communications that violate the FCC rules?
T1F11 [97.115(a)] To which foreign stations do the FCC rules authorize the transmission of non-emergency third party communications?
T1F12 [97.5(b)(2)] How many persons are required to be members of a club for a club station license to be issued by the FCC?
T1F13 [97.103(c)] When must the station licensee make the station and its records available for FCC inspection?
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Subelement T2 Operating Procedures
Group T2A Station operation: choosing an operating frequency; calling another station; test transmissions; procedural signs; use of minimum power; choosing an operating frequency; band plans; calling frequencies; repeater offsets
T2A01 What is the most common repeater frequency offset in the 2 meter band?
T2A02 What is the national calling frequency for FM simplex operations in the 70 cm band?
T2A03 What is a common repeater frequency offset in the 70 cm band?
T2A04 What is an appropriate way to call another station on a repeater if you know the other station's call sign?
T2A05 How should you respond to a station calling CQ?
T2A06 What must an amateur operator do when making on-air transmissions to test equipment or antennas?
T2A07 Which of the following is true when making a test transmission?
T2A08 What is the meaning of the procedural signal “CQ”?
T2A09 What brief statement is often transmitted in place of “CQ” to indicate that you are listening on a repeater?
T2A10 What is a band plan, beyond the privileges established by the FCC?
T2A11 [97.313(a)] Which of the following is an FCC rule regarding power levels used in the amateur bands, under normal, non-distress circumstances?
T2A12 Which of the following is a guideline to use when choosing an operating frequency for calling CQ?
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Group T2B VHF/UHF operating practices: SSB phone; FM repeater; simplex; splits and shifts; CTCSS; DTMF; tone squelch; carrier squelch; phonetics; operational problem resolution; Q signals
T2B01 What is the term used to describe an amateur station that is transmitting and receiving on the same frequency?
T2B02 What 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?
T2B03 Which of the following describes the muting of receiver audio controlled solely by the presence or absence of an RF signal?
T2B04 Which 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?
T2B05 What determines the amount of deviation of an FM (as opposed to PM) signal?
T2B06 What happens when the deviation of an FM transmitter is increased?
T2B07 What could cause your FM signal to interfere with stations on nearby frequencies?
T2B08 Which of the following applies when two stations transmitting on the same frequency interfere with each other?
T2B09 [97.119(b)(2)] Which of the following methods is encouraged by the FCC when identifying your station when using phone?
T2B10 Which Q signal indicates that you are receiving interference from other stations?
T2B11 Which Q signal indicates that you are changing frequency?
T2B12 Under what circumstances should you consider communicating via simplex rather than a repeater?
T2B13 Which of the following is true of the use of SSB phone in amateur bands above 50 MHz?
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Group T2C Public service: emergency and non-emergency operations; applicability of FCC rules; RACES and ARES; net and traffic procedures; emergency restrictions
T2C01 [97.103(a)] When do the FCC rules NOT apply to the operation of an amateur station?
T2C02 What is one way to recharge a 12-volt lead-acid station battery if the commercial power is out?
T2C03 What should be done to insure that voice message traffic containing proper names and unusual words are copied correctly by the receiving station?
T2C04 What do RACES and ARES have in common?
T2C05 [97.3(a)(38), 97.407] Which of the following describes the Radio Amateur Civil Emergency Service (RACES)?
T2C06 Which of the following is an accepted practice to get the immediate attention of a net control station when reporting an emergency?
T2C07 Which of the following is an accepted practice for an amateur operator who has checked into an emergency traffic net?
T2C08 Which of the following is a characteristic of good emergency traffic handling?
T2C09 Are amateur station control operators ever permitted to operate outside the frequency privileges of their license class?
T2C10 What is the preamble in a formal traffic message?
T2C11 What is meant by the term “check” in reference to a formal traffic message?
T2C12 What is the Amateur Radio Emergency Service (ARES)?
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Subelement T3 Radio wave characteristics: properties of radio waves; propagation modes
Group T3A Radio wave characteristics: how a radio signal travels; fading; multipath; wavelength vs. penetration; antenna orientation
T3A01 What 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?
T3A02 Why are UHF signals often more effective from inside buildings than VHF signals?
T3A03 What antenna polarization is normally used for long-distance weak-signal CW and SSB contacts using the VHF and UHF bands?
T3A04 What can happen if the antennas at opposite ends of a VHF or UHF line of sight radio link are not using the same polarization?
T3A05 When 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?
T3A06 What term is commonly used to describe the rapid fluttering sound sometimes heard from mobile stations that are moving while transmitting?
T3A07 What type of wave carries radio signals between transmitting and receiving stations?
T3A08 Which of the following is a likely cause of irregular fading of signals received by ionospheric reflection?
T3A09 Which of the following results from the fact that skip signals refracted from the ionosphere are elliptically polarized?
T3A10 What may occur if data signals propagate over multiple paths?
T3A11 Which part of the atmosphere enables the propagation of radio signals around the world?
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Group T3B Radio and electromagnetic wave properties: the electromagnetic spectrum; wavelength vs. frequency; velocity of electromagnetic waves; calculating wavelength
T3B01 What is the name for the distance a radio wave travels during one complete cycle?
T3B02 What property of a radio wave is used to describe its polarization?
T3B03 What are the two components of a radio wave?
T3B04 How fast does a radio wave travel through free space?
T3B05 How does the wavelength of a radio wave relate to its frequency?
T3B06 What is the formula for converting frequency to approximate wavelength in meters?
T3B07 What property of radio waves is often used to identify the different frequency bands?
T3B08 What are the frequency limits of the VHF spectrum?
T3B09 What are the frequency limits of the UHF spectrum?
T3B10 What frequency range is referred to as HF?
T3B11 What is the approximate velocity of a radio wave as it travels through free space?
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Group T3C Propagation modes: line of sight; sporadic E; meteor and auroral scatter and reflections; tropospheric ducting; F layer skip; radio horizon
T3C01 Why are direct (not via a repeater) UHF signals rarely heard from stations outside your local coverage area?
T3C02 Which of the following might be happening when VHF signals are being received from long distances?
T3C03 What is a characteristic of VHF signals received via auroral reflection?
T3C04 Which of the following propagation types is most commonly associated with occasional strong over-the-horizon signals on the 10, 6, and 2 meter bands?
T3C05 Which of the following effects might cause radio signals to be heard despite obstructions between the transmitting and receiving stations?
T3C06 What mode is responsible for allowing over-the-horizon VHF and UHF communications to ranges of approximately 300 miles on a regular basis?
T3C07 What band is best suited for communicating via meteor scatter?
T3C08 What causes tropospheric ducting?
T3C09 What is generally the best time for long-distance 10 meter band propagation via the F layer?
T3C10 What is the radio horizon?
T3C11 Why do VHF and UHF radio signals usually travel somewhat farther than the visual line of sight distance between two stations?
T3C12 Which of the following bands may provide long distance communications during the peak of the sunspot cycle?
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Subelement T4 Amateur radio practices and station setup
Group T4A Station setup: connecting microphones; reducing unwanted emissions; power source; connecting a computer; RF grounding; connecting digital equipment; connecting an SWR meter
T4A01 Which of the following is true concerning the microphone connectors on amateur transceivers?
T4A02 How might a computer be used as part of an amateur radio station?
T4A03 Which is a good reason to use a regulated power supply for communications equipment?
T4A04 Where must a filter be installed to reduce harmonic emissions from your station?
T4A05 Where should an in-line SWR meter be connected to monitor the standing wave ratio of the station antenna system?
T4A06 Which of the following would be connected between a transceiver and computer in a packet radio station?
T4A07 How is a computer's sound card used when conducting digital communications using a computer?
T4A08 Which type of conductor is best to use for RF grounding?
T4A09 Which of the following could you use to cure distorted audio caused by RF current flowing on the shield of a microphone cable?
T4A10 What is the source of a high-pitched whine that varies with engine speed in a mobile transceiver's receive audio?
T4A11 Where should the negative return connection of a mobile transceiver's power cable be connected?
T4A12 What could be happening if another operator reports a variable high-pitched whine on the audio from your mobile transmitter?
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Group T4B Operating controls: tuning; use of filters; squelch function; AGC; repeater offset; memory channels
T4B01 What may happen if a transmitter is operated with the microphone gain set too high?
T4B02 Which of the following can be used to enter the operating frequency on a modern transceiver?
T4B03 What is the purpose of the squelch control on a transceiver?
T4B04 What is a way to enable quick access to a favorite frequency on your transceiver?
T4B05 Which of the following would reduce ignition interference to a receiver?
T4B06 Which of the following controls could be used if the voice pitch of a single-sideband signal seems too high or low?
T4B07 What does the term “RIT” mean?
T4B08 What is the advantage of having multiple receive bandwidth choices on a multimode transceiver?
T4B09 Which of the following is an appropriate receive filter bandwidth to select in order to minimize noise and interference for SSB reception?
T4B10 Which of the following is an appropriate receive filter bandwidth to select in order to minimize noise and interference for CW reception?
T4B11 Which of the following describes the common meaning of the term "repeater offset"?
T4B12 What is the function of automatic gain control or AGC?
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Subelement T5 Electrical principles: math for electronics; electronic principles; Ohm's Law
Group T5A Electrical principles, units, and terms: current and voltage; conductors and insulators; alternating and direct current
T5A01 Electrical current is measured in which of the following units?
T5A02 Electrical power is measured in which of the following units?
T5A03 What is the name for the flow of electrons in an electric circuit?
T5A04 What is the name for a current that flows only in one direction?
T5A06 How much voltage does a mobile transceiver usually require?
T5A07 Which of the following is a good electrical conductor?
T5A08 Which of the following is a good electrical insulator?
T5A09 What is the name for a current that reverses direction on a regular basis?
T5A10 Which term describes the rate at which electrical energy is used?
T5A11 What is the basic unit of electromotive force?
T5A12 What term describes the number of times per second that an alternating current reverses direction?
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Group T5B Math for electronics: conversion of electrical units; decibels; the metric system
T5B01 How many milliamperes is 1.5 amperes?
T5B02 What is another way to specify a radio signal frequency of 1,500,000 hertz?
T5B03 How many volts are equal to one kilovolt?
T5B04 How many volts are equal to one microvolt?
T5B05 Which of the following is equivalent to 500 milliwatts?
T5B06 If an ammeter calibrated in amperes is used to measure a 3000-milliampere current, what reading would it show?
T5B07 If a frequency readout calibrated in megahertz shows a reading of 3.525 MHz, what would it show if it were calibrated in kilohertz?
T5B10 What is the approximate amount of change, measured in decibels (dB), of a power decrease from 12 watts to 3 watts?
T5B11 What is the approximate amount of change, measured in decibels (dB), of a power increase from 20 watts to 200 watts?
T5B12 Which of the following frequencies is equal to 28,400 kHz?
T5B13 If a frequency readout shows a reading of 2425 MHz, what frequency is that in GHz?
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Group T5C Electronic principles: capacitance; inductance; current flow in circuits; alternating current; definition of RF; DC power calculations; impedance
T5C01 What is the ability to store energy in an electric field called?
T5C02 What is the basic unit of capacitance?
T5C03 What is the ability to store energy in a magnetic field called?
T5C04 What is the basic unit of inductance?
T5C05 What is the unit of frequency?
T5C06 What does the abbreviation “RF” refer to?
T5C07 What is a usual name for electromagnetic waves that travel through space?
T5C08 What is the formula used to calculate electrical power in a DC circuit?
T5C09 How much power is being used in a circuit when the applied voltage is 13.8 volts DC and the current is 10 amperes?
T5C10 How much power is being used in a circuit when the applied voltage is 12 volts DC and the current is 2.5 amperes?
T5C11 How many amperes are flowing in a circuit when the applied voltage is 12 volts DC and the load is 120 watts?
T5C12 What is meant by the term impedance?
T5C13 What are the units of impedance?
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Group T5D Ohm's Law: formulas and usage
T5D01 What formula is used to calculate current in a circuit?
T5D02 What formula is used to calculate voltage in a circuit?
T5D03 What formula is used to calculate resistance in a circuit?
T5D04 What is the resistance of a circuit in which a current of 3 amperes flows through a resistor connected to 90 volts?
T5D05 What is the resistance in a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?
T5D06 What is the resistance of a circuit that draws 4 amperes from a 12-volt source?
T5D07 What is the current flow in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms?
T5D08 What is the current flowing through a 100-ohm resistor connected across 200 volts?
T5D09 What is the current flowing through a 24-ohm resistor connected across 240 volts?
T5D10 What is the voltage across a 2-ohm resistor if a current of 0.5 amperes flows through it?
T5D11 What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it?
T5D12 What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?
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Subelement T6 Electrical components: semiconductors; circuit diagrams; component functions
Group T6A Electrical components: fixed and variable resistors; capacitors and inductors; fuses; switches; batteries
T6A01 What electrical component is used to oppose the flow of current in a DC circuit?
T6A02 What type of component is often used as an adjustable volume control?
T6A03 What electrical parameter is controlled by a potentiometer?
T6A04 What electrical component stores energy in an electric field?
T6A05 What type of electrical component consists of two or more conductive surfaces separated by an insulator?
T6A06 What type of electrical component stores energy in a magnetic field?
T6A07 What electrical component is usually composed of a coil of wire?
T6A08 What electrical component is used to connect or disconnect electrical circuits?
T6A09 What electrical component is used to protect other circuit components from current overloads?
T6A10 Which of the following battery types is rechargeable?
T6A11 Which of the following battery types is not rechargeable?
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Group T6B Semiconductors: basic principles and applications of solid state devices; diodes and transistors
T6B01 What class of electronic components is capable of using a voltage or current signal to control current flow?
T6B02 What electronic component allows current to flow in only one direction?
T6B03 Which of these components can be used as an electronic switch or amplifier?
T6B04 Which of the following components can be made of three layers of semiconductor material?
T6B05 Which of the following electronic components can amplify signals?
T6B06 How is the cathode lead of a semiconductor diode usually identified?
T6B07 What does the abbreviation LED stand for?
T6B08 What does the abbreviation FET stand for?
T6B09 What are the names of the two electrodes of a diode?
T6B10 What are the three electrodes of a PNP or NPN transistor?
T6B11 What at are the three electrodes of a field effect transistor?
T6B12 What is the term that describes a transistor's ability to amplify a signal?
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Group T6C Circuit diagrams; schematic symbols
T6C01 What is the name for standardized representations of components in an electrical wiring diagram?
T6C02 What is component 1 in figure T1?
T6C03 What is component 2 in figure T1?
T6C04 What is component 3 in figure T1?
T6C05 What is component 4 in figure T1?
T6C06 What is component 6 in figure T2?
T6C07 What is component 8 in figure T2?
T6C08 What is component 9 in figure T2?
T6C09 What is component 4 in figure T2?
T6C10 What is component 3 in figure T3?
T6C11 What is component 4 in figure T3?
T6C12 What do the symbols on an electrical circuit schematic diagram represent?
T6C13 Which of the following is accurately represented in electrical circuit schematic diagrams?
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Group T6D Component functions: rectification; switches; indicators; power supply components; resonant circuit; shielding; power transformers; integrated circuits
T6D01 Which of the following devices or circuits changes an alternating current into a varying direct current signal?
T6D02 What best describes a relay?
T6D03 What type of switch is represented by component 3 in figure T2?
T6D04 Which of the following can be used to display signal strength on a numeric scale?
T6D05 What type of circuit controls the amount of voltage from a power supply?
T6D06 What component is commonly used to change 120V AC house current to a lower AC voltage for other uses?
T6D07 Which of the following is commonly used as a visual indicator?
T6D08 Which of the following is used together with an inductor to make a tuned circuit?
T6D09 What is the name of a device that combines several semiconductors and other components into one package?
T6D10 What is the function of component 2 in Figure T1?
T6D11 What is a simple resonant or tuned circuit?
T6D12 Which of the following is a common reason to use shielded wire?
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Subelement T7 Station equipment: common transmitter and receiver problems; antenna measurements; troubleshooting; basic repair and testing
Group T7A Station equipment: receivers; transmitters; transceivers; modulation; transverters; low power and weak signal operation; transmit and receive amplifiers
T7A01 Which term describes the ability of a receiver to detect the presence of a signal?
T7A02 What is a transceiver?
T7A03 Which of the following is used to convert a radio signal from one frequency to another?
T7A04 Which term describes the ability of a receiver to discriminate between multiple signals?
T7A05 What is the name of a circuit that generates a signal of a desired frequency?
T7A06 What device takes the output of a low-powered 28 MHz SSB exciter and produces a 222 MHz output signal?
T7A07 What is meant by term “PTT”?
T7A08 Which of the following describes combining speech with an RF carrier signal?-
T7A09 Which of the following devices is most useful for VHF weak-signal communication?
T7A10 What device increases the low-power output from a handheld transceiver?
T7A11 Where is an RF preamplifier installed?
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Group T7B Common transmitter and receiver problems: symptoms of overload and overdrive; distortion; causes of interference; interference and consumer electronics; part 15 devices; over and under modulation; RF feedback; off frequency signals; fading and noise; problems with digital communications interfaces
T7B01 What can you do if you are told your FM handheld or mobile transceiver is over-deviating?
T7B02 What would cause a broadcast AM or FM radio to receive an amateur radio transmission unintentionally?
T7B03 Which of the following may be a cause of radio frequency interference?
T7B04 Which of the following is a way to reduce or eliminate interference by an amateur transmitter to a nearby telephone?
T7B05 How can overload of a non-amateur radio or TV receiver by an amateur signal be reduced or eliminated?
T7B06 Which of the following actions should you take if a neighbor tells you that your station's transmissions are interfering with their radio or TV reception?
T7B07 Which of the following may be useful in correcting a radio frequency interference problem?
T7B08 What should you do if something in a neighbor's home is causing harmful interference to your amateur station?
T7B09 What is a Part 15 device?
T7B10 What might be the problem if you receive a report that your audio signal through the repeater is distorted or unintelligible?
T7B11 What is a symptom of RF feedback in a transmitter or transceiver?
T7B12 What might be the first step to resolve cable TV interference from your ham radio transmission?
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Group T7C Antenna measurements and troubleshooting: measuring SWR; dummy loads; coaxial cables; feed line failure modes
T7C01 What is the primary purpose of a dummy load?
T7C02 Which of the following instruments can be used to determine if an antenna is resonant at the desired operating frequency?
T7C03 What, in general terms, is standing wave ratio (SWR)?
T7C04 What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line?
T7C05 What is the approximate SWR value above which the protection circuits in most solid-state transmitters begin to reduce transmitter power?
T7C06 What does an SWR reading of 4:1 indicate?
T7C07 What happens to power lost in a feed line?
T7C08 What instrument other than an SWR meter could you use to determine if a feed line and antenna are properly matched?
T7C09 Which of the following is the most common cause for failure of coaxial cables?
T7C10 Why should the outer jacket of coaxial cable be resistant to ultraviolet light?
T7C11 What is a disadvantage of air core coaxial cable when compared to foam or solid dielectric types?
T7C12 Which of the following is a common use of coaxial cable?
T7C13 What does a dummy load consist of?
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Group T7D Basic repair and testing: soldering; using basic test instruments; connecting a voltmeter, ammeter, or ohmmeter
T7D01 Which instrument would you use to measure electric potential or electromotive force?
T7D02 What is the correct way to connect a voltmeter to a circuit?
T7D03 How is an ammeter usually connected to a circuit?
T7D04 Which instrument is used to measure electric current?
T7D05 What instrument is used to measure resistance?
T7D06 Which of the following might damage a multimeter?
T7D07 Which of the following measurements are commonly made using a multimeter?
T7D08 Which of the following types of solder is best for radio and electronic use?
T7D09 What is the characteristic appearance of a cold solder joint?
T7D10 What is probably happening when an ohmmeter, connected across an unpowered circuit, initially indicates a low resistance and then shows increasing resistance with time?
T7D11 Which of the following precautions should be taken when measuring circuit resistance with an ohmmeter?
T7D12 Which of the following precautions should be taken when measuring high voltages with a voltmeter?
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Subelement T8 Modulation modes: amateur satellite operation; operating activities; non-voice communications
Group T8A Modulation modes: bandwidth of various signals; choice of emission type
T8A01 Which of the following is a form of amplitude modulation?
T8A03 Which type of voice mode is most often used for long-distance (weak signal) contacts on the VHF and UHF bands?
T8A04 Which type of modulation is most commonly used for VHF and UHF voice repeaters?
T8A05 Which of the following types of emission has the narrowest bandwidth?
T8A06 Which sideband is normally used for 10 meter HF, VHF and UHF single-sideband communications?
T8A07 What is the primary advantage of single sideband over FM for voice transmissions?
T8A09 What is the approximate bandwidth of a VHF repeater FM phone signal?
T8A10 What is the typical bandwidth of analog fast-scan TV transmissions on the 70 cm band?
T8A11 What is the approximate maximum bandwidth required to transmit a CW signal?
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Group T8B Amateur satellite operation; Doppler shift, basic orbits, operating protocols; control operator, transmitter power considerations; satellite tracking; digital modes
T8B01 [97.301, 97.207(c)] Who may be the control operator of a station communicating through an amateur satellite or space station?
T8B02 [97.313] How much transmitter power should be used on the uplink frequency of an amateur satellite or space station?
T8B03 Which of the following are provided by satellite tracking programs?
T8B04 [97.301, 97.207(c)] 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?
T8B05 What is a satellite beacon?
T8B06 Which of the following are inputs to a satellite tracking program?
T8B07 With regard to satellite communications, what is Doppler shift?
T8B08 What is meant by the statement that a satellite is operating in mode U/V?
T8B09 What causes spin fading when referring to satellite signals?
T8B10 What do the initials LEO tell you about an amateur satellite?
T8B11 What is a commonly used method of sending signals to and from a digital satellite?
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Group T8C Operating activities: radio direction finding; radio control; contests; linking over the Internet; grid locators
T8C01 Which of the following methods is used to locate sources of noise interference or jamming?
T8C02 Which of these items would be useful for a hidden transmitter hunt?
T8C03 What popular operating activity involves contacting as many stations as possible during a specified period of time?
T8C04 Which of the following is good procedure when contacting another station in a radio contest?
T8C05 What is a grid locator?
T8C06 How is access to an IRLP node accomplished?
T8C07 [97.215(c)] What is the maximum power allowed when transmitting telecommand signals to radio controlled models?
T8C08 [97.215(a)] What is required in place of on-air station identification when sending signals to a radio control model using amateur frequencies?
T8C09 How might you obtain a list of active nodes that use VoIP?
T8C10 How do you select a specific IRLP node when using a portable transceiver?
T8C11 What name is given to an amateur radio station that is used to connect other amateur stations to the Internet?
T8C12 What is meant by Voice Over Internet Protocol (VoIP) as used in amateur radio?
T8C13 What is the Internet Radio Linking Project (IRLP)?
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Group T8D Non-voice communications: image signals; digital modes; CW; packet; PSK31; APRS; error detection and correction; NTSC
T8D01 Which of the following is an example of a digital communications method?
T8D02 What does the term “APRS” mean?
T8D03 Which of the following devices provides data to the transmitter when sending automatic position reports from a mobile amateur radio station?
T8D04 What type of transmission is indicated by the term NTSC?
T8D05 Which of the following is an application of APRS (Automatic Packet Reporting System)?
T8D06 What does the abbreviation PSK mean?
T8D07 What is PSK31?
T8D08 Which of the following may be included in packet transmissions?
T8D09 What code is used when sending CW in the amateur bands?
T8D10 Which of the following can be used to transmit CW in the amateur bands?
T8D11 What is an ARQ transmission system?
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Subelement T9 Antennas and feed lines
Group T9A Antennas: vertical and horizontal polarization; concept of gain; common portable and mobile antennas; relationships between antenna length and frequency
T9A01 What is a beam antenna?
T9A02 Which of the following is true regarding vertical antennas?
T9A03 Which of the following describes a simple dipole mounted so the conductor is parallel to the Earth's surface?
T9A04 What is a disadvantage of the “rubber duck” antenna supplied with most handheld radio transceivers?
T9A05 How would you change a dipole antenna to make it resonant on a higher frequency?
T9A06 What type of antennas are the quad, Yagi, and dish?
T9A07 What is a good reason not to use a “rubber duck” antenna inside your car?
T9A08 What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?
T9A09 What is the approximate length, in inches, of a 6 meter 1/2-wavelength wire dipole antenna?
T9A10 In which direction is the radiation strongest from a half-wave dipole antenna in free space?
T9A11 What is meant by the gain of an antenna?
T9A12 What is a reason to use a properly mounted 5/8 wavelength antenna for VHF or UHF mobile service?
T9A13 Why are VHF or UHF mobile antennas often mounted in the center of the vehicle roof?
T9A14 Which of the following terms describes a type of loading when referring to an antenna?
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Group T9B Feed lines: types of feed lines; attenuation vs. frequency; SWR concepts; matching; weather protection; choosing RF connectors and feed lines
T9B01 Why is it important to have a low SWR in an antenna system that uses coaxial cable feed line?
T9B02 What is the impedance of the most commonly used coaxial cable in typical amateur radio installations?
T9B03 Why is coaxial cable used more often than any other feed line for amateur radio antenna systems?
T9B04 What does an antenna tuner do?
T9B05 What generally happens as the frequency of a signal passing through coaxial cable is increased?
T9B06 Which of the following connectors is most suitable for frequencies above 400 MHz?
T9B07 Which of the following is true of PL-259 type coax connectors?
T9B08 Why should coax connectors exposed to the weather be sealed against water intrusion?
T9B09 What might cause erratic changes in SWR readings?
T9B10 What electrical difference exists between the smaller RG-58 and larger RG-8 coaxial cables?
T9B11 Which of the following types of feed line has the lowest loss at VHF and UHF?
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