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Ham Radio Technician > Technician T2 and T3 Test Questions > Flashcards

Technician T2 and T3 Test Questions Flashcards

1
Q

What is a common repeater frequency offset in the 2 meter band? T2A01

A

Plus or minus 600 kHz
6-11

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2
Q

What is the national calling frequency for FM simplex operations in the 2 meter band? T2A02

A

146.520 MHz
6-6

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3
Q

What is a common repeater frequency offset in the 70 cm band? T2A03

A

Plus or minus 5 MHz
6-11

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4
Q

What is an appropriate way to call another station on a repeater if you know the other station’s call sign? T2A04

A

Say the station’s call sign, then identify with your call sign
6-4

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5
Q

How should you respond to a station calling CQ? T2A05

A

Transmit the other station’s call sign followed by your call sign
6-6

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6
Q

Which of the following is required when making on-th-air test transmissions? T2A06

A

Identify the transmitting station
8-5

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7
Q

What is meant by “repeater offset”? T2A07

A

The difference between a repeater’s transmit and receive frequencies
6-11

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8
Q

What is the meaning of the procedural signal “CQ”? T2A08

A

Calling any station
6-6

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9
Q

Which of the following indicates that a station is listening on a repeater and looking for a contact? T2A09

A

The station’s call sign followed by the word “ monitoring”
6-4

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10
Q

What is a band plan, beyond the privileges established by the FCC? T2A10

A

A voluntary guideline for using different modes or activities within an amateur band
6-1

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11
Q

What term describes an amateur station that is transmitting and receiving on the same frequency? T2A11

A

Simplex
6-1

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12
Q

What should you do before calling CQ? T2A12

A

All these choices are correct
-Listen first to be sure that no one else is using the frequency
-Ask if the frequency is in use
-Make sure you are authorized to use that frequency
6-6

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13
Q

How is a VHF/UHF transceiver’s “reverse” function used? T2B01

A

To listen on a repeater’s input frequency
6-6W

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14
Q

What term describes the use of a sub-audible tone transmitted along with normal voice audio to open the squelch of a receiver? T2B02

A

CTCSS
6-12

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15
Q

Which of the following describes a linked repeater network? T2B03

A

A network of repeaters in which signals received by one repeater are transmitted by all the repeaters in the network
6-12

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16
Q

Which of the following could be the reason you are unable to access a repeater whose output you can hear? T2B04

A

All these choices are correct
-Improper transceiver offset
-You are using the wrong CTCSS tone
-You are using the wrong DCS code

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17
Q

What would cause your FM transmission audio to be distorted on voice peaks? T2B05

A

You are talking too loudly
5-8

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18
Q

What type of signaling uses pairs of audio tones? T2B06

A

DTMF
6-13

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19
Q

How can you join a digital repeater’s “talkgroup”? T2B07

A

Program your radio with the group’s ID or code
6-13

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20
Q

Which of the following applies when two stations transmitting on the same frequency interfere with each other? T2B08

A

The stations should negotiate continued use of the frequency
8-5

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21
Q

Why are simplex channels designated in the VHF/UHF band plans? T2B09

A

So stations within range of each other can communicate without tying up a repeater
6-6

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22
Q

Which Q signal indicates that you are receiving interference from other stations? T2B10

A

QRM
6-7

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23
Q

Which Q signal indicates that you are changing frequency? T2B11

A

QSY
6-7

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24
Q

What is the purpose of the color code used on DMR repeater systems? T2B12

A

Must match the repeater color code for access
6-13

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25
What is the purpose of a squelch function? T2B13
Mute the receiver audio when a signal is not present 5-8
26
When do FCC rules NOT apply to the operation of an amateur station? T2C01
FCC rules always apply 6-19
27
Which of the following are typical duties of a Net Control Station? T2C02
Call the net to order and direct communications between stations checking in 6-16
28
Whiat technique is used to ensure that voice messages containing unusual words are received correctly? T2C03
Spell the words using a standard phonetic alphabet 6-17
29
What is RACES? T2C04
An FCC part 97 amateur radio service for civil defense communications during national emergencies 6-18
30
What does the term "traffic" refer to in net operation? T2C05
Message exchanged by net stations 6-16
31
What is the Amateur Radio Emergency Service (ARES)? T2C06
A group off licensed amateurs who have voluntarily registered their qualifications and equipment for communications duty in the public service 6-18
32
Which of the following is standard practice when you participate in a net? T2C07
Unless you are reporting an emergency, transmit only when directed by the net control station 6-16
33
Which of the following is a characteristic of good traffic handling? T2C08
Passing messages exactly as received 6-17
34
Are amateur station control operators ever permitted to operate outside the frequency privileges of their license class? T2C09
Yes, but only in situations involving the immediate safety of human life or protection of property 6-19
35
What information is contained in the preamble of a formal traffic message? T2C10
Information needed to track the message 6-17
36
What is meant by "check" in a radiogram header? T2C11
The number of words or word equivalents in the text portion of the message 6-17
37
Why do VHF signal strengths sometimes vary greatly when the antenna is moved only a few feet? T3A01
Multipath propagation cancels or reinforces signals 4-1
38
What is the effect of vegetation on UHF and microwave signals? T3A02
Absorption 4-1
39
What antenna polarization is normally used for long-distance CW and SSB contacts on the VHF and UHF bands? T3A03
Horizontal 4-15
40
What happens when antennas at opposite ends of a VHF or UHF line of sight radio link are not using the same polarization? T3A04
Received signal strength is reduced 4-5
41
When using a directional antenna, how might your station be able to communicate with a distant repeater if buildings or obstructions are blocking the direct line of sight path? T3A05
Try to find a path that reflects signals to the repeater 4-15
42
What is the meaning of the term "picket fencing"? T3A06
Rapid flutter on mobile signals due to multipath propagation 4-1
43
What weather condition might decrease range at microwave frequencies? T3A07
Precipitation 4-1
44
What is a likely cause of irregular fading of signals propagated by the ionosphere? T3A08
Random combining of signals arriving via different paths
45
Which of the following results from the fact that signals propagated by the ionosphere are elliptically polarized? T309
Either vertically or horizontally polarized antennas may be used for transmission or reception 4-5
46
Which region of the atmosphere can refract or bend HF and VHF radio waves? T3A11
The ionosphere 4-3
46
What effect does multipath propagation have on data transmissions? T3A10
Error rates are likely to decrease 4-1
47
What is the effect of fog and rain on signals in the 10 meter and 6 meter bands? T3A12
There is little effect 4-1
48
What is the relationship between the electric and magnetic fields of an electromagnetic wave? T3B01
They are at right angles 4-5
49
What property of a radio wave defines its polarization? T3B02
The orientation of the electric field 4-5
50
What are the two components of a radio wave? T3B03
Electric and magnetic fields 4-5
51
What is the velocity of a radio wave traveling through free space? T3B04
Speed of light 2-5
52
What is the relationship between wavelength and frequency? T3B05
Wavelength gets shorter as frequency increases 2-5
53
What is the formula for converting frequency to approximate wavelength in meters? T3B06
Wavelength in meters equals 300 divided by frequency in megahertz 2-5
54
In addition to frequency, which of the following is used to identify amateur radio bands? T3B07
The approximate wavelength in meters 2-5
55
What frequency range is referred to as VHF? T3B08
30MHz to 300MHz 2-4
56
What frequency range is referred to as UHF? T3B09
300 to 3000 MHz 2-4
57
What frequency range is referred to as HF? T3B10
3 to 30 MHz 2-4
58
What is the approximate velocity of a radio wave in free space?
300,000,000 meters per second 2-5
59
Why are simplex UHF signals rarely heard beyond their radio horizon? T3C01
UHF signals are usually not propagated by the ionosphere 4-3
60
What is a characteristic of HF communication compared with communications on VHF and higher frequencies? T3C02
Long-distance ionospheric propagations is far more common on HF 4-3
61
What is a characteristic of VHF signals received via auroral backscatter? T3C03
They are distorted and signal strength varies considerably 4-3
62
Which of the following types of propagation is most commonly associated with occasional strong signals on the 10, 6 and 2 meter bands from beyond the radio horizon? T3C04
Sporadic E 4-3
63
Which of the following effects may allow radio signals to travel beyond obstructions between the transmitting and receiving stations? T3C05
Knife-edge diffraction 4-1
64
What type of propagation is responsible for allowing over-the-horizon VHF and UHF communications to ranges of approximately 300 miles on a regular basis? T3C06
Tropospheric ducting 4-1
65
What band is best suited for communicating via meteor scatter? T3C07
6 meters 4-3
66
What causes tropospheric ducting? T3C08
Temperature inversions in the atmosphere 4-2
67
What is generally the best time for long-distance 10 meter band propagation via the F region? T3C09
From dawn to shortly after sunset during periods of high sunspot activity 4-3
68
Which of the following bands may provide long-distance communications via the ionosphere's F region during the peak of the sunspot cycle? T3C10
6 and 10 meters 4-3
69
Why is the radio horizon for VHF and UHF signals more distant than the visual horizon? T3C11
The atmosphere refracts radio waves slightly 4-2

Ham Radio Technician (6 decks)

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