Ham Technician License Practice Quiz
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T0A07: Which of these precautions should be taken when installing devices for lightning protection in a coaxial cable feedline?
Include a parallel bypass switch for each protector so that it can be switched out of the circuit when running high power
Include a series switch in the ground line of each protector to prevent RF overload from inadvertently damaging the protector
Keep the ground wires from each protector separate and connected to station ground
Ground all of the protectors to a common plate which is in turn connected to an external ground
T0B03: Under what circumstances is it safe to climb a tower without a helper or observer?
When no electrical work is being performed
When no mechanical work is being performed
When the work being done is not more than 20 feet above the ground
T0C05: Why do exposure limits vary with frequency?
Lower frequency RF fields have more energy than higher frequency fields
Lower frequency RF fields do not penetrate the human body
Higher frequency RF fields are transient in nature
The human body absorbs more RF energy at some frequencies than at others
T1A04: Which of the following meets the FCC definition of harmful interference?
Radio transmissions that annoy users of a repeater
Unwanted radio transmissions that cause costly harm to radio station apparatus
That which seriously degrades, obstructs, or repeatedly interrupts a radio communication service operating in accordance with the Radio Regulations
Static from lightning storms
T1B01: What is the ITU?
An agency of the United States Department of Telecommunications Management
A United Nations agency for information and communication technology issues
An independent frequency coordination agency
A department of the FCC
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?
Stop operating or take steps to eliminate the harmful interference
Nothing, because this band is allocated exclusively to the amateur service
Establish contact with the radiolocation station and ask them to change frequency
Change to CW mode, because this would not likely cause interference
T1D09: Under which of the following circumstances are amateur stations authorized to transmit signals related to broadcasting, program production, or news gathering, assuming no other means is available?
Only where such communications directly relate to the immediate safety of human life or protection of property
Only when broadcasting communications to or from the space shuttle.
Only where noncommercial programming is gathered and supplied exclusively to the National Public Radio network
Only when using amateur repeaters linked to the Internet
T1E10: What 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?
T1F06: Which of the following formats of a self-assigned indicator is acceptable when identifying using a phone transmission?
KL7CC stroke W3
KL7CC slant W3
KL7CC slash W3
All of these choices are correct
T2A04: What is an appropriate way to call another station on a repeater if you know the other station's call sign?
Say "break, break" then say the station's call sign
Say the station's call sign then identify with your call sign
Say "CQ" three times then the other station's call sign
Wait for the station to call "CQ" then answer it
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?
The repeater receiver requires audio tone burst for access
The repeater receiver requires a CTCSS tone for access
The repeater receiver may require a DCS tone sequence for access
All of these choices are correct
T2C11: What is meant by the term "check" in reference to a formal traffic message?
The check is a count of the number of words or word equivalents in the text portion of the message
The check is the value of a money order attached to the message
The check is a list of stations that have relayed the message
The check is a box on the message form that tells you the message was received
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?
The modulation sidebands might become inverted
Signals could be significantly weaker
Signals have an echo effect on voices
Nothing significant will happen
T3B01: What is the name for the distance a radio wave travels during one complete cycle?
T3C07: What band is best suited to communicating via meteor scatter?
T4A11: Where should a mobile transceiver's power negative connection be made?
At the battery or engine block ground strap
At the antenna mount
To any metal part of the vehicle
Through the transceiver's mounting bracket
T4B08: What is the advantage of having multiple receive bandwidth choices on a multimode transceiver?
Permits monitoring several modes at once
Permits noise or interference reduction by selecting a bandwidth matching the mode
Increases the number of frequencies that can be stored in memory
Increases the amount of offset between receive and transmit frequencies
T5A11: What is the basic unit of electromotive force?
T5B09: What is the approximate amount of change, measured in decibels (dB), of a power increase from 5 watts to 10 watts?
T5C11: How many amperes are flowing in a circuit when the applied voltage is 12 volts DC and the load is 120 watts?
T5D03: What formula is used to calculate resistance in a circuit?
Resistance (R) equals voltage (E) multiplied by current (I)
Resistance (R) equals voltage (E) divided by current (I)
Resistance (R) equals voltage (E) added to current (I)
Resistance (R) equals voltage (E) minus current (I)
T6A06: What type of electrical component stores energy in a magnetic field?
T6B04: Which of these components is made of three layers of semiconductor material?
Bipolar junction transistor
T6C07: What is component 8 in figure T2?
Light emitting diode
T6D09: What is the name of a device that combines several semiconductors and other components into one package?
T7A12: Which term describes the ability of a receiver to discriminate between multiple signals?
T7B08: What should you do if a "Part 15" device in your neighbor's home is causing harmful interference to your amateur station?
Work with your neighbor to identify the offending device
Politely inform your neighbor about the rules that require him to stop using the device if it causes interference
Check your station and make sure it meets the standards of good amateur practice
All of these choices are correct
T7C09: Which of the following is the most common cause for failure of coaxial cables?
The velocity factor exceeds 1.0
T7D03: How is an ammeter usually connected to a circuit?
In series with the circuit
In parallel with the circuit
In quadrature with the circuit
In phase with the circuit
T8A08: What is the approximate bandwidth of a single sideband voice signal?
T8B07: With regard to satellite communications, what is Doppler shift?
A change in the satellite orbit
A mode where the satellite receives signals on one band and transmits on another
An observed change in signal frequency caused by relative motion between the satellite and the earth station
A special digital communications mode for some satellites
T8C01: Which of the following methods is used to locate sources of noise interference or jamming?
Radio direction finding
T8D05: Which of the following emission modes may be used by a Technician Class operator between 219 and 220 MHz?
T9A01: What is a beam antenna?
An antenna built from aluminum I-beams
An omnidirectional antenna invented by Clarence Beam
An antenna that concentrates signals in one direction
An antenna that reverses the phase of received signals
T9B06: Which of the following connectors is most suitable for frequencies above 400 MHz?
A UHF (PL-259/SO-239) connector
A Type N connector
An RS-213 connector
A DB-23 connector