Term
| Which is a commonly accepted value for the lowest voltage that can cause a dangerous electric shock? |
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Definition
|
|
Term
| What type of radiation are VHF and UHF radio signals? |
|
Definition
|
|
Term
| When should members of a tower work team wear a hard hat and safety glasses? |
|
Definition
| At all times when any work is being done on the tower. |
|
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Term
|
Definition
| A United Nations agency for information and communication technology issues. |
|
|
Term
| Which type of call sign has a single letter in both the prefix and suffix? |
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Definition
|
|
Term
| With which countries are FCC-licensed amateur stations prohibited from exchanging communications? |
|
Definition
| Any country whose administration has notified the ITU that it objects to such communications. |
|
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Term
| When must an amateur station have a control operator? |
|
Definition
| Only when the station is transmitting. |
|
|
Term
| What type of identification is being used when identifying a station on the air as 'Race Headquarters'? |
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Definition
|
|
Term
| What is the term used to describe an amateur station that is transmitting and receiving on the same frequency? |
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Definition
|
|
Term
| What set of rules applies to proper operation of your station when using amateur radio at the request of public service officials? |
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Definition
|
|
Term
| What is the most common repeater frequency offset in the 2 meter band? |
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Definition
|
|
Term
| 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? |
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Definition
| Try moving a few feet, as random reflections may be causing multi-path distortion. |
|
|
Term
| Why are 'direct' (not via a repeater) UHF signals rarely heard from stations outside your local coverage area? |
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Definition
| UHF signals are usually not reflected by the ionosphere. |
|
|
Term
| Which of the following is true concerning the microphone connectors on amateur transceivers? |
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Definition
| Some connectors include push-to-talk and voltages for powering the microphone. |
|
|
Term
| What may happen if a transmitter is operated with the microphone gain set too high? |
|
Definition
| The output signal might become distorted. |
|
|
Term
| Electrical current is measured in which of the following units? |
|
Definition
|
|
Term
| How many milliamperes is 1.5 amperes? |
|
Definition
|
|
Term
| What is the ability to store energy in an electric field called? |
|
Definition
|
|
Term
| What formula is used to calculate current in a circuit? |
|
Definition
| Current (I) equals voltage (E) divided by resistance (R). |
|
|
Term
| What electrical component is used to oppose the flow of current in a DC circuit? |
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Definition
|
|
Term
| What class of electronic components is capable of using a voltage or current signal to control current flow? |
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Definition
|
|
Term
| What is the name for standardized representations of components in an electrical wiring diagram? |
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Definition
|
|
Term
| Which of the following devices or circuits changes an alternating current into a varying direct current signal? |
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Definition
|
|
Term
| What is the function of a product detector? |
|
Definition
| Detect CW and SSB signals. |
|
|
Term
| What can you do if you are told your FM handheld or mobile transceiver is over deviating? |
|
Definition
| Talk farther away from the micropho |
|
|
Term
| What is the primary purpose of a dummy load? |
|
Definition
| To prevent the radiation of signals when making tests. |
|
|
Term
| Which instrument would you use to measure electric potential or electromotive force? |
|
Definition
|
|
Term
| Which of the following is a form of amplitude modulation? |
|
Definition
|
|
Term
| Who may be the control operator of a station communicating through an amateur satellite or space station? |
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Definition
| Any amateur whose license privileges allow them to transmit on the satellite uplink frequency. |
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|
Term
| Which of the following methods is used to locate sources of noise interference or jamming? |
|
Definition
|
|
Term
| Which of the following is an example of a digital communications method? |
|
Definition
|
|
Term
|
Definition
| An antenna that concentrates signals in one direction |
|
|
Term
| Why is it important to have a low SWR in an antenna system that uses coaxial cable feedline? |
|
Definition
| To allow the efficient transfer of power and reduce losses. |
|
|
Term
| For whom is the Amateur Radio Service intended? |
|
Definition
| Persons who are interested in radio technique solely with a personal aim and without pecuniary interest. |
|
|
Term
| How does current flowing through the body cause a health hazard? |
|
Definition
By heating tissue.
It disrupts the electrical functions of cells.
It causes involuntary muscle contractions. |
|
|
Term
| What is a good precaution to observe before climbing an antenna tower? |
|
Definition
| Put on a climbing harness and safety glasses. |
|
|
Term
| Which of the following frequencies has the lowest Maximum Permissible Exposure limit? |
|
Definition
|
|
Term
| What agency regulates and enforces the rules for the Amateur Radio Service in the United States? |
|
Definition
|
|
Term
| North American amateur stations are located in which ITU region? |
|
Definition
|
|
Term
| Which of the following is a valid US amateur radio station call sign? |
|
Definition
|
|
Term
| On which of the following occasions may an FCC-licensed amateur station exchange messages with a U.S. military station? |
|
Definition
| During an Armed Forces Day Communications Test. |
|
|
Term
| Who is eligible to be the control operator of an amateur station? |
|
Definition
| 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. |
|
|
Term
| When using tactical identifiers, how often must your station transmit the station's FCC-assigned call sign? |
|
Definition
|
|
Term
| What is the national calling frequency for FM simplex operations in the 70 cm band? |
|
Definition
|
|
Term
| 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? |
|
Definition
|
|
Term
| Who must submit the request for a temporary waiver of Part 97.113 to allow amateur radio operators to provide communications on behalf of their employers during a government sponsored disaster drill? |
|
Definition
| The government agency sponsoring the event. |
|
|
Term
| Why are UHF signals often more effective from inside buildings than VHF signals? |
|
Definition
| The shorter wavelength allows them to more easily penetrate the structure of buildings. |
|
|
Term
| What term describes the number of times per second that an alternating current reverses direction? |
|
Definition
|
|
Term
| Which of the following might be happening when VHF signals are being received from long distances? |
|
Definition
| Signals are being refracted from a sporadic E layer. |
|
|
Term
| What could be used in place of a regular speaker to help you copy signals in a noisy area? |
|
Definition
|
|
Term
| Which of the following can be used to enter the operating frequency on a modern transceiver? |
|
Definition
|
|
Term
| Electrical power is measured in which of the following units? |
|
Definition
|
|
Term
| What is another way to specify a radio signal frequency of 1,500,000 hertz? |
|
Definition
|
|
Term
| What is the basic unit of capacitance? |
|
Definition
|
|
Term
| What formula is used to calculate voltage in a circuit? |
|
Definition
| Voltage (E) equals current (I) multiplied by resistance (R). |
|
|
Term
| What type of component is often used as an adjustable volume control? |
|
Definition
|
|
Term
| What electronic component allows current to flow in only one direction? |
|
Definition
|
|
Term
| What is component 1 in figure T1? |
|
Definition
|
|
Term
| What best describes a relay? |
|
Definition
| A switch controlled by an electromagnet. |
|
|
Term
| What type of receiver is shown in Figure T6? |
|
Definition
| Single-conversion superheterodyne. |
|
|
Term
| What is meant by fundamental overload in reference to a receiver? |
|
Definition
| Interference caused by very strong signals. |
|
|
Term
| Which of the following instruments can be used to determine if an antenna is resonant at the desired operating frequency? |
|
Definition
|
|
Term
| What is the correct way to connect a voltmeter to a circuit? |
|
Definition
| In parallel with the circuit. |
|
|
Term
| What type of modulation is most commonly used for VHF packet radio transmissions? |
|
Definition
|
|
Term
| How much transmitter power should be used on the uplink frequency of an amateur satellite or space station? |
|
Definition
| The minimum amount of power needed to complete the contact. |
|
|
Term
| Which of these items would be useful for a hidden transmitter hunt? |
|
Definition
|
|
Term
| What does the term APRS mean? |
|
Definition
| Automatic Position Reporting System. |
|
|
Term
| Which of the following is true regarding vertical antennas? |
|
Definition
| The electric field is perpendicular to the Earth. |
|
|
Term
| What is the impedance of the most commonly used coaxial cable in typical amateur radio installations? |
|
Definition
|
|
Term
| What is connected to the green wire in a three-wire electrical AC plug? |
|
Definition
|
|
Term
| Under what circumstances is it safe to climb a tower without a helper or observer? |
|
Definition
|
|
Term
| What is the maximum power level that an amateur radio station may use at VHF frequencies before an RF exposure evaluation is required? |
|
Definition
| 50 watts PEP at the antenna. |
|
|
Term
| Which part of the FCC rules contains the rules and regulations governing the Amateur Radio Service? |
|
Definition
|
|
Term
| Which frequency is within the 6 meter band? |
|
Definition
|
|
Term
| What types of international communications are permitted by an FCC-licensed amateur station? |
|
Definition
| Communications incidental to the purposes of the amateur service and remarks of a personal character. |
|
|
Term
| When is the transmission of codes or ciphers allowed to hide the meaning of a message transmitted by an amateur station? |
|
Definition
| Only when transmitting control commands to space stations or radio control craft. |
|
|
Term
| Who must designate the station control operator? |
|
Definition
|
|
Term
| When is an amateur station required to transmit its assigned call sign? |
|
Definition
| At least every 10 minutes during and at the end of a contact. |
|
|
Term
| What is a common repeater frequency offset in the 70 cm band? |
|
Definition
|
|
Term
| Which of the following describes the muting of receiver audio controlled solely by the presence or absence of an RF signal? |
|
Definition
|
|
Term
| When is it legal for an amateur licensee to provide communications on behalf of their employer during a government sponsored disaster drill or exercise? |
|
Definition
| Only when the FCC has granted a government-requested waiver. |
|
|
Term
| What antenna polarization is normally used for long-distance weak-signal CW and SSB contacts using the VHF and UHF bands? |
|
Definition
|
|
Term
| What are the two components of a radio wave? |
|
Definition
| Electric and magnetic fields. |
|
|
Term
| What is a characteristic of VHF signals received via auroral reflection? |
|
Definition
| The signals exhibit rapid fluctuations of strength and often sound distorted. |
|
|
Term
| Which is a good reason to use a regulated power supply for communications equipment? |
|
Definition
| It prevents voltage fluctuations from reaching sensitive circuits. |
|
|
Term
| What is the purpose of the squelch control on a transceiver? |
|
Definition
| To mute receiver output noise when no signal is being received. |
|
|
Term
| What is the name for the flow of electrons in an electric circuit? |
|
Definition
|
|
Term
| How many volts are equal to one kilovolt? |
|
Definition
|
|
Term
| What is the ability to store energy in a magnetic field called? |
|
Definition
|
|
Term
| What formula is used to calculate resistance in a circuit? |
|
Definition
| Resistance (R) equals voltage (E) divided by current (I). |
|
|
Term
| What electrical parameter is controlled by a potentiometer? |
|
Definition
|
|
Term
| Which of these components can be used as an electronic switch or amplifier? |
|
Definition
|
|
Term
| What is component 2 in figure T1? |
|
Definition
|
|
Term
| What type of switch is represented by item 3 in figure T2? |
|
Definition
| Single-pole single-throw. |
|
|
Term
| What is the function of a mixer in a superheterodyne receiver? |
|
Definition
| To shift the incoming signal to an intermediate frequency. |
|
|
Term
| Which of the following may be a cause of radio frequency interference? |
|
Definition
Fundamental overload.
Harmonics.
Spurious emissions. |
|
|
Term
| What, in general terms, is standing wave ratio (SWR)? |
|
Definition
| A measure of how well a load is matched to a transmission line. |
|
|
Term
| How is an ammeter usually connected to a circuit? |
|
Definition
| In series with the circuit. |
|
|
Term
| Which type of voice modulation is most often used for long-distance or weak signal contacts on the VHF and UHF bands? |
|
Definition
|
|
Term
| Which of the following can be done using an amateur radio satellite? |
|
Definition
| Talk to amateur radio operators in other countries. |
|
|
Term
| Which of the following can be done using an amateur radio satellite? |
|
Definition
| Talk to amateur radio operators in other countries. |
|
|
Term
| What popular operating activity involves contacting as many stations as possible during a specified period of time? |
|
Definition
|
|
Term
| Which of the following is normally used when sending automatic location reports via amateur radio? |
|
Definition
| A Global Positioning System receiver. |
|
|
Term
| Which of the following describes a simple dipole mounted so the conductor is parallel to the Earth's surface? |
|
Definition
| A horizontally polarized antenna. |
|
|
Term
| Why is coaxial cable used more often than any other feedline for amateur radio antenna systems? |
|
Definition
| It is easy to use and requires few special installation considerations. |
|
|
Term
| What is the purpose of a fuse in an electrical circuit? |
|
Definition
| To interrupt power in case of overload. |
|
|
Term
| Which of the following is an important safety precaution to observe when putting up an antenna tower? |
|
Definition
| Look for and stay clear of any overhead electrical wires. |
|
|
Term
| What factors affect the RF exposure of people near an amateur station antenna? |
|
Definition
Frequency and power level of the RF field.
Distance from the antenna to a person.
Radiation pattern of the antenna. |
|
|
Term
| Which of the following meets the FCC definition of harmful interference? |
|
Definition
| That which seriously degrades, obstructs, or repeatedly interrupts a radio communication service operating in accordance with the Radio Regulations. |
|
|
Term
| Which amateur band are you using when your station is transmitting on 146.52 MHz? |
|
Definition
|
|
Term
| When are you allowed to operate your amateur station in a foreign country? |
|
Definition
| When the foreign country authorizes it. |
|
|
Term
| What is the only time an amateur station is authorized to transmit music? |
|
Definition
| When incidental to an authorized retransmission of manned spacecraft communications. |
|
|
Term
| What determines the transmitting privileges of an amateur station? |
|
Definition
| The class of operator license held by the control operator. |
|
|
Term
| Which of the following is an acceptable language for use for station identification when operating in a phone sub-band? |
|
Definition
|
|
Term
| What is an appropriate way to call another station on a repeater if you know the other station's call sign? |
|
Definition
| Say the station's call sign then identify with your call sign. |
|
|
Term
| 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? |
|
Definition
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. |
|
|
Term
| What do RACES and ARES have in common? |
|
Definition
| Both organizations may provide communications during emergencies. |
|
|
Term
| 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? |
|
Definition
| Signals could be significantly weaker. |
|
|
Term
| How fast does a radio wave travel through free space? |
|
Definition
|
|
Term
| 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? |
|
Definition
|
|
Term
| Where must a filter be installed to reduce harmonic emissions? |
|
Definition
| Between the transmitter and the antenna. |
|
|
Term
| What is a way to enable quick access to a favorite frequency on your transceiver? |
|
Definition
| Store the frequency in a memory channel. |
|
|
Term
| What is the name for a current that flows only in one direction? |
|
Definition
|
|
Term
| How many volts are equal to one microvolt? |
|
Definition
| One one-millionth of a volt. |
|
|
Term
| What is the basic unit of inductance? |
|
Definition
|
|
Term
| What is the resistance of a circuit in which a current of 3 amperes flows through a resistor connected to 90 volts? |
|
Definition
|
|
Term
| What electrical component stores energy in an electric field? |
|
Definition
|
|
Term
| Which of these components is made of three layers of semiconductor material? |
|
Definition
| Bipolar junction transistor. |
|
|
Term
| What is component 3 in figure T1? |
|
Definition
|
|
Term
| Which of the following can be used to display signal strength on a numeric scale? |
|
Definition
|
|
Term
| What circuit is pictured in Figure T7, if block 1 is a frequency discriminator? |
|
Definition
|
|
Term
| What is the most likely cause of interference to a non-cordless telephone from a nearby transmitter? |
|
Definition
| The telephone is inadvertently acting as a radio receiver. |
|
|
Term
| What reading on an SWR meter indicates a perfect impedance match between the antenna and the feedline? |
|
Definition
|
|
Term
| Which instrument is used to measure electric current? |
|
Definition
|
|
Term
| Which type of modulation is most commonly used for VHF and UHF voice repeaters? |
|
Definition
|
|
Term
| the International Space Station using 2 meter and 70 cm band amateur radio frequencies? |
|
Definition
| Any amateur holding a Technician or higher class license. |
|
|
Term
| Which of the following is good procedure when contacting another station in a radio contest? |
|
Definition
| Send only the minimum information needed for proper identification and the contest exchange. |
|
|
Term
| What type of transmission is indicated by the term NTSC? |
|
Definition
| An analog fast scan color TV signal. |
|
|
Term
| What is a disadvantage of the 'rubber duck' antenna supplied with most handheld radio transceivers? |
|
Definition
| It does not transmit or receive as effectively as a full-sized antenna. |
|
|
Term
| What does an antenna tuner do? |
|
Definition
| It matches the antenna system impedance to the transceiver's output impedance. |
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