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

Chapter 6: Communicating With Hams Flashcards

1
Q

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

A

Voluntary agreements designed for normal conditions

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2
Q

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

A

Simplex

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3
Q

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

A

Every amateur band from 50MHz and up has frequencies available for CW and SSB operation

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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?

A

Say the other station’s call sign once, followed by “this is” or “from”, then give your call sign
(Ex: N0Ax this is WA7KYI)

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5
Q

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

A

Give your call sign

EX: W1AW is monitoring

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6
Q

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

A

You could be transmitting from a bad location where signal is distorted at the repeater input. Weak or low batteries can also cause distorted audio.

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7
Q

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

A

146.52 MHz

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8
Q

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

A

Reverse split function swaps transmit and receive frequencies. Enabling you to listen for the other station on the repeater’s input frequency.

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9
Q

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

A

Listening on the repeater’s input frequency

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10
Q

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

A

Avoid occupying or “tying up” a repeater

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11
Q

How should you respond to a station calling CQ?

A

Give the CQing station’s call sign once, then yours once or twice. Give you call clearly and distinctly so that they can understand it if there is noise or interference.

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12
Q

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

A

CQ means “I am calling any station”

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13
Q

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

A

Three things:

  1. Be sure the frequency is one your license privileges authorizes you to use.
  2. Listen to be sure the freq is not already in use.
  3. Make a short transmission asking if the freq is in use.
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14
Q

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

A

QRM - Your transmission is being interfered with

1. Nil; 2. Slightly; 3. Moderately; 4. Severely; 5. Extremely

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15
Q

Which Q signal indicates that you are changing frequency?

A

QSY - Change to transmission on another frequency

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16
Q

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

A

Radio contests

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17
Q

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

A

Send only minimum information need to identify you station and complete the exchange.

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18
Q

What is a grid locator?

A

Earth’s surface is divided into a system of rectangles based on latitude and longitude. Each rectangle is identified with a combination of letters and numbers.

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19
Q

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

A

National Television System Committee - fast scan color television signals are the same as analog broadcast TV signals.

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20
Q

What ham activity is used to locate sources of noise interference or jamming?

A

Fox hunting

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21
Q

Which equipment would be useful for a hidden transmitter hunt?

A

A handheld or portable directional antenna, such as a small Yagi beam; and a portable radio with a strength indicator.

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22
Q

Name a use for the scanning function of an FM transceiver.

A

Use can use this feature to listen for activity on repeater or simplex channels.

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23
Q

Name a common repeater frequency offset in the 2 meter band.

A

+ or - 600 kHz

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24
Q

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

A

+ or - 5 MHz

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25
Q

What is meant by “repeater offset”?

A

The difference between repeater input and output frequencies

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26
Q

Describe a linked repeater network

A

Repeaters can be linked to other repeaters. That is, they share the signals each receives and retransmit them.

27
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), PL (private line), or sub-audible. Also known as privacy codes.

28
Q

Name a possible reason you are unable to access a repeater whose output you can hear.

A

You probably don’t have your radio set up to use the right type of frequency of access tone.

29
Q

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

A

Dual Tone Multi-Frequency (DTMF)

30
Q

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

A

By programming your radio with those IDs and codes

31
Q

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

A

Talk groups allow groups of users to share a channel at different times without being heard by other users on the channel.

32
Q

How is access to some IRLP nodes accomplished?

A

Dual Tone Multi-Frequency (DTMF)

33
Q

What is meant by Voice Over Internet Protocol (VOIP) as used in Amateur radio?

A

Online telephone service venders, such as Skype, use VoIP to deliver voice communications over the internet by digital techniques.

34
Q

What is the Internet Radio Linking Project (IRLP)?

A

One of the oldest digitally linked systems. Both use VoIP to link repeaters.

35
Q

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

A

Nodes are listed in repeater directories, by subscribing to an online repeater listing service, or from online lists maintained by repeater coordinators.

36
Q

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

A

Hams are required to send a copy of their license to the EchoLink system administrators to be authorized to use the system.

37
Q

Describe DMR (Digital Mobile Radio).

A

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

38
Q

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

A

Net Control Station, running the net; members of the net should always immediately suspend any lower priority operation and respond to emergency if necessary.

39
Q

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

A

Messages following a set, formal structure.

40
Q

Name an acceptable practice to get the immediate attention of a net control station when reporting an emergency.

A

Break in by saying: “Priority” or “Emergency” followed by call sign.

41
Q

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

A

Do not transmit unless you are specifically requested or authorized to do so or a request is made for capabilities or information that you can provide.

42
Q

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

A

Spelled out using phonetics.

43
Q

What is a characteristic of good traffic handling?

A

The accurate relaying of messages exactly as written, spoken or received.

44
Q

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

A

The preamble is made up of several bits of information about the message.

45
Q

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

A

The number of words and word equivalents in the radiogram text.

46
Q

Describe the Radio Amateur Civil Emergency Service (RACES)?

A

Part of the Amateur service created by the FCC to provide communications assistance to local, state, or federal government emergency management agencies during civil emergencies.

47
Q

What do RACES and ARES have in common?

A

Both organizations provide emergency and disaster response communications.

48
Q

What is the Amateur Radio Emergency Service (ARES)?

A

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

49
Q

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

A

Never, you are bound by FCC rules at all times, even if using your radio in support of a public safety agency.

50
Q

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

A

In an emergency situation where there is immediate risk to life or property and normal forms of communication are not available.

51
Q

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

A

Contacts may be made by any amateur licensed to transmit on the uplink frequency.

52
Q

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

A

Defined by the FCC as an amateur station located more than 50km above the Earth’s surface.

53
Q

What is a satellite beacon?

A

A signal from the satellite containing information about a satellite

54
Q

With regard to satellite communications, what is Doppler shift?

A

A shift in a signal’s frequency due to relative motion between the satellite and the Earth station.

55
Q

What causes spin fading of satellite signals?

A

Signal fading caused by rotation of the satellite and its antennas

56
Q

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

A

Low Earth Orbit.

57
Q

What is provided by satellite tracking programs?

A

Satellite location, the trajectory the satellite will follow across the sky, and even the amount of Doppler shift the signals will experience.

58
Q

Name an input to a satellite tracking program.

A

Keplerian elements

59
Q

What telemetry information is typically transmitted by satellite beacons?

A

Information on health and status of the satellite.

60
Q

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

A

Always use the minimum amount of transmitted power to contact satellites, since their relay transmitter power is limited by their solar panels and batteries.

61
Q

What mode of transmission is used by amateur radio satellites?

A

Most common modes are SSB, FM, CW, and data.

62
Q

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

A

Satellite operational mode is specified as two letters separated by a slash. The first letter indicates the uplink band and the second letter indicates the downlink band. (U/V has uplink as UHF band and downlink is VHF band)

63
Q

Who may receive telemetry from a space station?

A

Anyone! Hurrah!

64
Q

What is a good way to judge whether your uplink power is entirely too low nor too high?

A

If your signal on the satellite downlink is about the same strength as that of the satellite’s beacon, you’re using the right amount of power.

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

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