Tech - T2 Ham Radio - v2014 Flashcards

Engineering
Terms Definitions
T6A01 What electrical component is used to oppose the flow of current in a DC circuit?
Resistor
T5C05 What is the unit of frequency?
Hertz
T6A11 Which battery type is not rechargeable?
Carbon-zinc
T8A08 What is the approximate bandwidth of a single sideband voice signal?
3 kHz
T5B06 If an ammeter calibrated in amperes is used to measure a 3000-milliampere current, what reading would it show?
3 amperes
T0C08 Which of the following actions might amateur operators take to prevent exposure to RF radiation in excess of FCC-supplied limits?
Relocate antennas
T1F02 When using tactical identifiers, how often must your station transmit the station’s FCC-assigned call sign?
Every ten minutes
T6D04 Which of the following can be used to display signal strength on a numeric scale?
Meter
T6C02 What is component 1 in figure T1?

 
Resistor
T8A02 What type of modulation is most commonly used for VHF packet radio transmissions?
FM
T4A10 What is the source of a high-pitched whine that varies with engine speed in a mobile transceiver’s receive audio?
The alternator
T5C11 How many amperes are flowing in a circuit when the applied voltage is 12 volts DC and the load is 120 watts?
10 amperes
T1A03 Which part of the FCC rules contains the rules and regulations governing the Amateur Radio Service?
Part 97
T6C10 What is component 3 in figure T3?
Variable inductor
T7A07 If figure T5 represents a transceiver in which block 1 is the transmitter portion and block 3 is the receiver portion, what is the function of block 2?
A transmit-receive switch
T3B10 What frequency range is referred to as HF?
3 to 30 MHz
T5B02 What is another way to specify a radio signal frequency of 1,500,000 hertz?
1500 kHz
T1B01 What is the ITU?
A United Nations agency for information and communication technology issues
T7C04 What reading on an SWR meter indicates a perfect impedance match between the antenna and the feedline?
1 to 1
T3B08 What are the frequency limits of the VHF spectrum?
30 to 300 MHz
T2B06 What happens when the deviation of an FM transmitter is increased?
Its signal occupies more bandwidth
T8B06 What can be used to determine the time period during which an amateur satellite or space station can be accessed?
A satellite tracking program
T4B11 Which of the following describes the common meaning of the term “repeater offset”?
The difference between the repeater’s transmit and receive frequencies
T1F10 Who is accountable should a repeater inadvertently retransmit communications that violate the FCC rules?
The control operator of the originating station
T7D02 What is the correct way to connect a voltmeter to a circuit?
In parallel with the circuit
T9B08 Why should coax connectors exposed to the weather be sealed against water intrusion?
To prevent an increase in feedline loss
T4A11 Where should a mobile transceiver’s power negative connection be made?
At the battery or engine block ground strap
T1A07 What is the FCC Part 97 definition of telemetry?
A one-way transmission of measurements at a distance from the measuring instrument
T1D10 What is the meaning of the term broadcasting in the FCC rules for the amateur services?
Transmissions intended for reception by the general public
T8B02 How much transmitter power should be used on the uplink frequency of an amateur satellite or space station?
The minimum amount of power needed to complete the contact
T3B05 How does the wavelength of a radio wave relate to its frequency?
The wavelength gets shorter as the frequency increases
T0A11 Which of the following is good practice when installing ground wires on a tower for lightning protection?
Ensure that connections are short and direct
T1A01 For whom is the Amateur Radio Service intended?
Persons who are interested in radio technique solely with a personal aim and without pecuniary interest
T7B05 What is a logical first step when attempting to cure a radio frequency interference problem in a nearby telephone?
Install an RF filter at the telephone
T4B04 What is a way to enable quick access to a favorite frequency on your transceiver?
Store the frequency in a memory channel
T1B09 Why should you not set your transmit frequency to be exactly at the edge of an amateur band or sub-band?
To allow for calibration error in the transmitter frequency display AND So that modulation sidebands do not extend beyond the band edge AND To allow for transmitter frequency drift AND All of these choices are correct
T7C03 What, in general terms, is standing wave ratio (SWR)?
A measure of how well a load is matched to a transmission line
T3C11 Why do VHF and UHF radio signals usually travel somewhat farther than the visual line of sight distance between two stations?
The Earth seems less curved to radio waves than to light
T9B03 Why is coaxial cable used more often than any other feedline for amateur radio antenna systems?
It is easy to use and requires few special installation considerations
/ 39
Term:
Definition:
Definition:

Leave a Comment ({[ getComments().length ]})

Comments ({[ getComments().length ]})

{[comment.username]}

{[ comment.comment ]}

View All {[ getComments().length ]} Comments
Ask a homework question - tutors are online