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ARRL Ham Radio License - Technician (Level 1) > Chapter 6: Communicating With Other Hams > Flashcards

Chapter 6: Communicating With Other Hams Flashcards

1
Q

What is the FCC Part 97 definition of a space station?

A

An Amateur station located more than 50 km above the Earth’s surface.

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2
Q

Describe the Radio Amateur Civil Emergency Service (RACES).

A

A radio service using amateur stations and frequencies for emergency management or civil defense communications. it is also an emergency service using amateur operators certified by a civil defense organization as being enrolled in that organization.

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3
Q

What amateur radio stations may make contact with an amateur radio station on the International Space Station (ISS) using 2 meter and 70 cm band frequencies?

A

Any amateur holding a Technician or higher-class license.

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4
Q

Who may be the control operator of a station communicating through amateur satellite or space station?

A

Any amateur whose license privileges allow them to transmit on the satellite uplink frequency.

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5
Q

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

A

Plus or minus 600 kHz.

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6
Q

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

A

146.520 MHz

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7
Q

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

A

Plus or minus 5 MHz

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8
Q

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

A

Say the station’s call sign, then identify with your call sign.

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9
Q

How should you respond to a station calling CQ?

A

Transmit the other station’s call sign followed by your call sign.

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10
Q

What is meant by “repeater offset?”

A

The difference between a repeater’s transmit frequency and its receive frequency.

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11
Q

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

A

Calling any station.

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12
Q

What brief statement indicates that you are listening on a repeater and looking for a contact?

A

Your call sign.

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13
Q

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

A

A voluntary guideline for using different modes or activities within an amateur band.

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14
Q

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

A

Simplex

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15
Q

What is a guideline for choosing an operating frequency for calling CQ?

A
  • listen first to be sure that no one else is using the frequency
  • ask if the frequency is in use
  • make sure you are in your assigned band
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16
Q

What is the most common use of the “reverse split” function of a VHF/UHF transceiver?

A

Listen on a repeater’s input frequency.

if you can hear another station on the input, then you do not need the repeater and should shift to simplex

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17
Q

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

A

Continuous Tone Coded Squelch System (CTCSS).

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18
Q

If a station is not strong enough to keep a repeater’s receiver squelch open, what might allow you to receive the station’s signal?

A

Listen on the repeater input frequency.

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19
Q

What could be the reason you are unable to access a repeater whose output you can hear?

A
  • improper transceiver offset
  • the repeater may require a proper CTCSS tone from your transceiver
  • the repeater may require a proper DCS tone from your transceiver
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20
Q

What type of tones are used to control repeaters linked by the Internal Relay Linking Project (IRLP) protocol?

A

Dual-Tone Multi-Frequency (DTMF)

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21
Q

How can you join a digital repeater’s “talk group?”

A

Program your radio with the group’s ID or code.

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22
Q

What is a “talk group” on a DMR digital repeater?

A

A way for groups of users to share a channel at different times without being heard by other users on the channel.

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23
Q

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

A

QRM

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24
Q

Which Q signal indicates that you are changing frequency?

A

QSY

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25
Q

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

A

So that stations within mutual communications range can communicate without tying up a repeater.

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26
Q

Where may a SSB phone be used in the amateur bands above 50 MHz?

A

In at least some portion of all these bands.

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27
Q

Describe a linked repeater network.

A

A network of repeaters where signals received by one repeater are repeated by all the repeaters.

28
Q

When do the FCC rules NOT apply to the operation of an amateur station?

A

Never, FCC rules always apply.

29
Q

What is meant by “NCS” used in the net operations?

A

Net Control Station

30
Q

What should be done when using voice modes to ensure that voice messages containing unusual words are received correctly?

A

Spell the words using a standard phonetic alphabet.

31
Q

What do RACES and ARES have in common?

A

Both organizations may provide communications during emergencies.

32
Q

What does the term “traffic” refer to in net operations?

A

Formal messages exchanged by net stations.

33
Q

What is an accepted practice to get the immediate attention of a net control station when reporting an emergency?

A

Begin your transmission by saying “Priority” or “Emergency” followed by your call sign.

34
Q

What is an accepted practice for an amateur operator who has checked into a net?

A

Remain on frequency without transmitting until asked to do so by the net control station.

35
Q

What is a characteristic of good traffic handling?

A

Passing messages exactly as received.

36
Q

Are amateur station control operators ever permitted to operate outside the frequency privileges of their license class?

A

Yes, but only if necessary in situations involving the immediate safety of human life or protection of property.

37
Q

What information is contained in the preamble of a formal traffic message?

A

The information needed to track the message.

38
Q

What is meant by “check,” in reference to a formal traffic message?

A

The number of words or word equivalents in the text portion of the message.

39
Q

What is the Amateur Radio Emergency Service (ARES)?

A

Licensed amateurs who have voluntarily registered their qualifications and equipment for communications duty in the public service.

40
Q

What is a use for the scanning function of an FM transceiver?

A

To scan through a range of frequencies to check for activity.

41
Q

What might be a problem if you receive a report that your audio signal through the repeater is distorted or unintelligible?

A
  • your transceiver is slightly off frequency
  • your batteries are running low
  • you are in a bad location
42
Q

What telemetry information is typically transmitted by satellite beacons?

A

Health and status of the satellite.

43
Q

What is the impact of using too much effective radiated power on a satellite uplink?

A

Blocking access by other users.

44
Q

What are provided by satellite tracking programs?

A
  • maps showing the real-time position of the satellite track over earth
  • the time, azimuth, and elevation of the start, maximum altitude, and end of a pass
  • the apparent frequency of the satellite transmission, including effects of Doppler shift
45
Q

What mode of transmission is commonly used by amateur radio satellites?

A

SSB
FM
CW/data

46
Q

What is a satellite beacon?

A

A transmission from a satellite that contains status information.

47
Q

What are inputs to a satellite tracking program?

A

The Keplerian elements.

48
Q

With regard to satellite communications, what is Doppler shift?

A

An observed change in signal frequency caused by relative motion between the satellite and the earth station.

49
Q

What is meant by the statement that a satellite is operating in mode U/V?

A

The satellite uplink is in the 70 cm band and the downlink is in the 2 meter band.

50
Q

What causes spin fading of a satellite signals?

A

Rotation of the satellite and it antennas.

51
Q

What do the initials LEO tell you about an amateur satellite?

A

The satellite is in a Low Earth Orbit.

52
Q

Who may receive telemetry from a space station?

A

Anyone who can receive the telemetry signal.

53
Q

What is a good way to judge whether your uplink power is neither too low nor too high?

A

Your signal strength on the downlink should be about the same as the beacon.

54
Q

What method is used to locate sources of noise interference of jamming?

A

Radio Direction Finding

55
Q

What would be useful for a hidden transmitter hunt?

A

A directional antenna.

56
Q

What operating activity involves contacting as many stations as possible during a specified period?

A

Contesting

57
Q

What is good procedure when contacting another station in a radio contest?

A

Send only the minimum information needed for proper identification and the contest exchange.

58
Q

What is a grid locator?

A

A letter-number designator assigned to a geographic location.

59
Q

How is access to some IRLP nodes accomplished?

A

By using Dual-Tone Multi-Frequency (DTMF) signals.

60
Q

What is meant by Voice Over Internet Protocol (VoIP) as used in amateur radio?

A

A method of delivering voice communications over the internet using digital techniques.

61
Q

What is the Internet Radio Linking Project (IRLP)?

A

A technique to connect amateur radio systems, such as repeaters, via the internet using Voice Over Internet Protocol (VoIP).

62
Q

How might you obtain a list of active nodes that use VoIP?

A
  • subscribing to an on line service
  • From an on line repeater lists maintained by the local repeater frequency coordinator
  • from a repeater directory
63
Q

What must be done before you may use the EchoLink system to communicate using a repeater?

A

You must register your call sign and provide proof of license.

64
Q

What type of transmission is indicated by the term “NTSC?”

A

An analog fast scan color TV signal.

65
Q

What best describes Digital Mobile Radio (DMR)?

A

A technique for time-multiplexing two digital voice signals on a single 12.5 kHz repeater channel.

ARRL Ham Radio License - Technician (Level 1) (11 decks)

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