Ham Radio - Technician Class - Question Pool. 100% Accurate. Verified.

Ham Radio - Technician Class - Question Pool. 100% Accurate. Verified. T0A01 Which is a commonly accepted value for the lowest voltage that can cause a dangerous electric shock? A. 12 volts B. 30 volts C. 120 volts D. 300 volts - (B) T0A02 How does current flowing through the body cause a health hazard? A. By heating tissue B. It disrupts the electrical functions of cells C. It causes involuntary muscle contractions D. All of these choices are correct - (D) T0A03 What is connected to the green wire in a three-wire electrical AC plug? A. Neutral B. Hot C. Safety ground D. The white wire - (C) T0A04 What is the purpose of a fuse in an electrical circuit? A. To prevent power supply ripple from damaging a circuit B. To interrupt power in case of overload C. To limit current to prevent shocks D. All of these choices are correct - (B) T0A05 Why is it unwise to install a 20-ampere fuse in the place of a 5-ampere fuse? A. The larger fuse would be likely to blow because it is rated for higher current B. The power supply ripple would greatly increase C. Excessive current could cause a fire D. All of these choices are correct - (C) T0A06 What is a good way to guard against electrical shock at your station? A. Use three-wire cords and plugs for all AC powered equipment B. Connect all AC powered station equipment to a common safety ground C. Use a circuit protected by a ground-fault interrupter D. All of these choices are correct - (D) T0A07 Which of these precautions should be taken when installing devices for lightning protection in a coaxial cable feedline? A. Include a parallel bypass switch for each protector so that it can be switched out of the circuit when running high power B. Include a series switch in the ground line of each protector to prevent RF overload from inadvertently damaging the protector C. Keep the ground wires from each protector separate and connected to station ground D. Ground all of the protectors to a common plate which is in turn connected to an external ground - (D) T0A08 What is one way to recharge a 12-volt lead-acid station battery if the commercial power is out? A. Cool the battery in ice for several hours B. Add acid to the battery C. Connect the battery to a car's battery and run the engine D. All of these choices are correct - (C) T0A09 What kind of hazard is presented by a conventional 12-volt storage battery? A. It emits ozone which can be harmful to the atmosphere B. Shock hazard due to high voltage C. Explosive gas can collect if not properly vented D. All of these choices are correct - (C) T0A10 What can happen if a lead-acid storage battery is charged or discharged too quickly? A. The battery could overheat and give off flammable gas or explode B. The voltage can become reversed C. The "memory effect" will reduce the capacity of the battery D. All of these choices are correct - (A) T0A11 Which of the following is good practice when installing ground wires on a tower for lightning protection? A. Put a loop in the ground connection to prevent water damage to the ground system B. Make sure that all bends in the ground wires are clean, right angle bends C. Ensure that connections are short and direct D. All of these choices are correct - (C) T0A12 What kind of hazard might exist in a power supply when it is turned 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 large capacitors - (D) T0A13 What safety equipment should always be included in home-built equipment that is powered from 120V AC power circuits? A. A fuse or circuit breaker in series with the AC "hot" conductor B. An AC voltmeter across the incoming power source C. An inductor in series with the AC power source D. A capacitor across the AC power source - (A) T0B01 When should members of a tower work team wear a hard hat and safety glasses? A. At all times except when climbing the tower B. At all times except when belted firmly to the tower C. At all times when any work is being done on the tower D. Only when the tower exceeds 30 feet in height - (C) T0B02 What is a good precaution to observe before climbing an antenna tower? A. Make sure that you wear a grounded wrist strap B. Remove all tower grounding connections C. Put on a climbing harness and safety glasses D. All of the these choices are correct - (C) T0B03 Under what circumstances is it safe to climb a tower without a helper or observer? A. When no electrical work is being performed B. When no mechanical work is being performed C. When the work being done is not more than 20 feet above the ground D. Never - (D) T0B04 Which of the following is an important safety precaution to observe when putting up an antenna tower? A. Wear a ground strap connected to your wrist at all times B. Insulate the base of the tower to avoid lightning strikes C. Look for and stay clear of any overhead electrical wires D. All of these choices are correct - (C) T0B05 What is the purpose of a gin pole? A. To temporarily replace guy wires B. To be used in place of a safety harness C. To lift tower sections or antennas D. To provide a temporary ground - (C) T0B06 What is the minimum safe distance from a power line to allow when installing an antenna? A. Half the width of your property B. The height of the power line above ground C. 1/2 wavelength at the operating frequency D. So that if the antenna falls unexpectedly, no part of it can come closer than 10 feet to the power wires - (D) T0B07 Which of the following is an important safety rule to remember when using a crank-up tower? A. This type of tower must never be painted B. This type of tower must never be grounded C. This type of tower must never be climbed unless it is in the fully retracted position D. All of these choices are correct - (C) T0B08 What is considered to be a proper grounding method for a tower? A. A single four-foot ground rod, driven into the ground no more than 12 inches from the base B. A ferrite-core RF choke connected between the tower and ground C. Separate eight-foot long ground rods for each tower leg, bonded to the tower and each other D. A connection between the tower base and a cold water pipe - (C) T0B09 Why should you avoid attaching an antenna to a utility pole? A. The antenna will not work properly because of induced voltages B. The utility company will charge you an extra monthly fee C. The antenna could contact high-voltage power wires D. All of these choices are correct - (C) T0B10 Which of the following is true concerning grounding conductors used for lightning protection? A. Only non-insulated wire must be used B. Wires must be carefully routed with precise right-angle bends C. Sharp bends must be avoided D. Common grounds must be avoided - (C) T0B11 Which of the following establishes grounding requirements for an amateur radio tower or antenna? A. FCC Part 97 Rules B. Local electrical codes C. FAA tower lighting regulations D. Underwriters Laboratories' recommended practices - (B) T0C01 What type of radiation are VHF and UHF radio signals? A. Gamma radiation B. Ionizing radiation C. Alpha radiation D. Non-ionizing radiation - (D) T0C02 Which of the following frequencies has the lowest Maximum Permissible Exposure limit? A. 3.5 MHz B. 50 MHz C. 440 MHz D. 1296 MHz - (B) T0C03 What is the maximum power level that an amateur radio station may use at VHF frequencies before an RF exposure evaluation is required? A. 1500 watts PEP transmitter output B. 1 watt forward power C. 50 watts PEP at the antenna D. 50 watts PEP reflected power - (C) T0C04 What factors affect the RF exposure of people near an amateur station antenna? A. Frequency and power level of the RF field B. Distance from the antenna to a person C. Radiation pattern of the antenna D. All of these choices are correct - (D) T0C05 Why do exposure limits vary with frequency? A. Lower frequency RF fields have more energy than higher frequency fields B. Lower frequency RF fields do not penetrate the human body C. Higher frequency RF fields are transient in nature D. The human body absorbs more RF energy at some frequencies than at others - (D) T0C06 Which of the following is an acceptable method to determine that your station complies with FCC RF exposure regulations? A. By calculation based on FCC OET Bulletin 65 B. By calculation based on computer modeling C. By measurement of field strength using calibrated equipment D. All of these choices are correct - (D) T0C07 What could happen if a person accidentally touched your antenna while you were transmitting? A. Touching the antenna could cause television interference B. They might receive a painful RF burn C. They might develop radiation poisoning D. All of these choices are correct - (B) T0C08 Which of the following actions might amateur operators take to prevent exposure to RF radiation in excess of FCC-supplied limits? A. Relocate antennas B. Relocate the transmitter C. Increase the duty cycle D. All of these choices are correct - (A) T0C09 How can you make sure your station stays in compliance with RF safety regulations? A. By informing the FCC of any changes made in your station B. By re-evaluating the station whenever an item of equipment is changed C. By making sure your antennas have low SWR D. All of these choices are correct - (B) T0C10 Why is duty cycle one of the factors used to determine safe RF radiation exposure levels? A. It affects the average exposure of people to radiation B. It affects the peak exposure of people to radiation C. It takes into account the antenna feedline loss D. It takes into account the thermal effects of the final amplifier - (A) T0C11 What is meant by "duty cycle" when referring to RF exposure? A. The difference between lowest usable output and maximum rated output power of a transmitter B. The difference between PEP and average power of an SSB signal C. The ratio of on-air time to total operating time of a transmitted signal D. The amount of time the operator spends transmitting - (C) T1A02 What agency regulates and enforces the rules for the Amateur Radio Service in the United States? A. FEMA B. The ITU C. The FCC D. Homeland Security - (C) T1A03 Which part of the FCC rules contains the rules and regulations governing the Amateur Radio Service? A. Part 73 B. Part 95 C. Part 90 D. Part 97 - (D) T1A04 Which of the following meets the FCC definition of harmful interference? A. Radio transmissions that annoy users of a repeater B. Unwanted radio transmissions that cause costly harm to radio station apparatus C. That which seriously degrades, obstructs, or repeatedly interrupts a radio communication service operating in accordance with the Radio Regulations D. Static from lightning storms - (C) T1A05 What is the FCC Part 97 definition of a space station? A. Any multi-stage satellite B. An Earth satellite that carries one of more amateur operators C. An amateur station located less than 25 km above the Earth's surface D. An amateur station located more than 50 km above the Earth's surface - (D) T1A06 What is the FCC Part 97 definition of telecommand? A. An instruction bulletin issued by the FCC B. A one-way radio transmission of measurements at a distance from the measuring instrument C. A one-way transmission to initiate, modify or terminate functions of a device at a distance D. An instruction from a VEC - (C) T1A07 What is the FCC Part 97 definition of telemetry? A. An information bulletin issued by the FCC B. A one-way transmission to initiate, modify or terminate functions of a device at a distance C. A one-way transmission of measurements at a distance from the measuring instrument D. An information bulletin from a VEC - (C) T1A08 Which of the following entities recommends transmit/receive channels and other parameters for auxiliary and repeater stations? A. Frequency Spectrum Manager B. Frequency Coordinator C. FCC Regional Field Office D. International Telecommunications Union - (B) T1A09 Who selects a Frequency Coordinator? A. The FCC Office of Spectrum Management and Coordination Policy B. The local chapter of the Office of National Council of Independent Frequency Coordinators C. Amateur operators in a local or regional area whose stations are eligible to be auxiliary or repeater stations D. FCC Regional Field Office - (C) T1A10 What is the FCC Part 97 definition of an amateur station? A. A station in an Amateur Radio Service consisting of the apparatus necessary for carrying on radio communications B. A building where Amateur Radio receivers, transmitters, and RF power amplifiers are installed C. Any radio station operated by a non-professional D. Any radio station for hobby use - (A) T1A11 Which of the following stations transmits signals over the air from a remote receive site to a repeater for retransmission? A. Beacon station B. Relay station C. Auxiliary station D. Message forwarding station - (C) T1B01 What is the ITU? A. An agency of the United States Department of Telecommunications Management B. A United Nations agency for information and communication technology issues C. An independent frequency coordination agency D. A department of the FCC - (B) T1B02 North American amateur stations are located in which ITU region? A. Region 1 B. Region 2 C. Region 3 D. Region 4 - (B) T1B03 Which frequency is within the 6 meter band? A. 49.00 MHz B. 52.525 MHz C. 28.50 MHz D. 222.15 MHz - (B) T1B04 Which amateur band are you using when your station is transmitting on 146.52 MHz? A. 2 meter band B. 20 meter band C. 14 meter band D. 6 meter band - (A) T1B05 Which 70 cm frequency is authorized to a Technician Class license holder operating in ITU Region 2? A. 53.350 MHz B. 146.520 MHz C. 443.350 MHz D. 222.520 MHz - (C) T1B06 Which 23 cm frequency is authorized to a Technician Class operator license? A. 2315 MHz B. 1296 MHz C. 3390 MHz D. 146.52 MHz - (B) T1B07 What amateur band are you using if you are transmitting on 223.50 MHz? A. 15 meter band B. 10 meter band C. 2 meter band D. 1.25 meter band - (D) T1B08 What do the FCC rules mean when an amateur frequency band is said to be available on a secondary basis? A. Secondary users of a frequency have equal rights to operate B. Amateurs are only allowed to use the frequency at night C. Amateurs may not cause harmful interference to primary users D. Secondary users are not allowed on amateur bands - (C) T1B09 Why should you not set your transmit frequency to be exactly at the edge of an amateur band or sub-band? A. To allow for calibration error in the transmitter frequency display B. So that modulation sidebands do not extend beyond the band edge C. To allow for transmitter frequency drift D. All of these choices are correct - (D) T1B10 Which of the bands available to Technician Class operators have mode-restricted sub-bands? A. The 6 meter, 2 meter, and 70 cm bands B. The 2 meter and 13 cm bands C. The 6 meter, 2 meter, and 1.25 meter bands D. The 2 meter and 70 cm bands - (C) T1B11 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? A. CW only B. CW and RTTY C. SSB only D. CW and SSB - (A) T1C01 Which type of call sign has a single letter in both the prefix and suffix? A. Vanity B. Sequential C. Special event D. In-memoriam - (C) T1C02 Which of the following is a valid US amateur radio station call sign? A. KMA3505 B. W3ABC C. KDKA D. 11Q1176 - (B) T1C03 What types of international communications are permitted by an FCC-licensed amateur station? A. Communications incidental to the purposes of the amateur service and remarks of a personal character B. Communications incidental to conducting business or remarks of a personal nature C. Only communications incidental to contest exchanges, all other communications are prohibited D. Any communications that would be permitted on an international broadcast station - (A) T1C04 When are you allowed to operate your amateur station in a foreign country? A. When the foreign country authorizes it B. When there is a mutual agreement allowing third party communications C. When authorization permits amateur communications in a foreign language D. When you are communicating with non-licensed individuals in another country - (A) T1C05 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? A. Stop operating or take steps to eliminate the harmful interference B. Nothing, because this band is allocated exclusively to the amateur service C. Establish contact with the radiolocation station and ask them to change frequency D. Change to CW mode, because this would not likely cause interference - (A) T1C06 From which of the following may an FCC-licensed amateur station transmit, in addition to places where the FCC regulates communications? A. From within any country that belongs to the International Telecommunications Union B. From within any country that is a member of the United Nations C. From anywhere within in ITU Regions 2 and 3 D. From any vessel or craft located in international waters and documented or registered in the United States - (D) T1C07 What may result when correspondence from the FCC is returned as undeliverable because the grantee failed to provide the correct mailing address? A. Fine or imprisonment B. Revocation of the station license or suspension of the operator license C. Require the licensee to be re-examined D. A reduction of one rank in operator class - (B) T1C08 What is the normal term for an FCC-issued primary station/operator license grant? A. Five years B. Life C. Ten years D. Twenty years - (C) T1C09 What is the grace period following the expiration of an amateur license within which the license may be renewed? A. Two years B. Three years C. Five years D. Ten years - (A) T1C10 How soon may you operate a transmitter on an amateur service frequency after you pass the examination required for your first amateur radio license? A. Immediately B. 30 days after the test date C. As soon as your name and call sign appear in the FCC's ULS database D. You must wait until you receive your license in the mail from the FCC - (C) T1C11 If your license has expired and is still within the allowable grace period, may you continue to operate a transmitter on amateur service frequencies? A. No, transmitting is not allowed until the ULS database shows that the license has been renewed B. Yes, but only if you identify using the suffix "GP" C. Yes, but only during authorized nets D. Yes, for up to two years - (A) T1D01 With which countries are FCC-licensed amateur stations prohibited from exchanging communications? A. Any country whose administration has notified the ITU that it objects to such communications B. Any country whose administration has notified the United Nations that it objects to such communications C. Any country engaged in hostilities with another country D. Any country in violation of the War Powers Act of 1934 - (A) T1D02 On which of the following occasions may an FCC-licensed amateur station exchange messages with a U.S. military station? A. During an Armed Forces Day Communications Test B. During a Memorial Day Celebration C. During an Independence Day celebration D. During a propagation test - (A) T1D03 When is the transmission of codes or ciphers allowed to hide the meaning 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 or radio control craft D. Only when frequencies above 1280 MHz are used - (C) T1D04 What is the only time an amateur station is authorized to transmit music? A. When incidental to an authorized retransmission of manned spacecraft communications B. When the music produces no spurious emissions C. When the purpose is to interfere with an illegal transmission D. When the music is transmitted above 1280 MHz - (A) T1D05 When may amateur radio operators use their stations to notify other amateurs of the availability of equipment for sale or trade? A. When the equipment is normally used in an amateur station and such activity is not conducted on a regular basis B. When the asking price is $100.00 or less C. When the asking price is less than its appraised value D. When the equipment is not the personal property of either the station licensee or the control operator or their close relatives - (A) T1D06 Which of the following types of transmissions are prohibited? A. Transmissions that contain obscene or indecent words or language B. Transmissions to establish one-way communications C. Transmissions to establish model aircraft control D. Transmissions for third party communications - (A) T1D07 When is an amateur station authorized to automatically retransmit the radio signals of other amateur stations? A. When the signals are from an auxiliary, beacon, or Earth station B. When the signals are from an auxiliary, repeater, or space station C. When the signals are from a beacon, repeater, or space station D. When the signals are from an Earth, repeater, or space station - (B) T1D08 When may the control operator of an amateur station receive compensation for operating the station? A. When engaging in communications on behalf of their employer B. When the communication is incidental to classroom instruction at an educational institution C. When re-broadcasting weather alerts during a RACES net D. When notifying other amateur operators of the availability for sale or trade of apparatus - (B) T1D09 Under which of the following circumstances are amateur stations authorized to transmit signals related to broadcasting, program production, or news gathering, assuming no other means is available? A. Only where such communications directly relate to the immediate safety of human life or protection of property B. Only when broadcasting communications to or from the space shuttle. C. Only where noncommercial programming is gathered and supplied exclusively to the National Public Radio network D. Only when using amateur repeaters linked to the Internet - (A) T1D10 What is the meaning of the term broadcasting in the FCC rules for the amateur services? A. Two-way transmissions by amateur stations B. Transmission of music C. Transmission of messages directed only to amateur operators D. Transmissions intended for reception by the general public - (D) T1D11 Which of the following types of communications are permitted in the Amateur Radio Service? A. Brief transmissions to make station adjustments B. Retransmission of entertainment programming from a commercial radio or TV station C. Retransmission of entertainment material from a public radio or TV station D. Communications on a regular basis that could reasonably be furnished alternatively through other radio services - (A) T1E01 When must an amateur station have a control operator? A. Only when the station is transmitting B. Only when the station is being locally controlled C. Only when the station is being remotely controlled D. Only when the station is being automatically controlled - (A) T1E02 Who is eligible to be the control operator of an amateur station? A. Only a person holding an amateur service license from any country that belongs to the United Nations B. Only a citizen of the United States C. Only a person over the age of 18 D. Only a person for whom an amateur operator/primary station license grant appears in the FCC database or who is authorized for alien reciprocal operation - (D) T1E03 Who must designate the station control operator? A. The station licensee B. The FCC C. The frequency coordinator D. The ITU - (A)