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Ham Extra 2016-2020 > E2 Operating Procedures > Flashcards

E2 Operating Procedures Flashcards

1
Q

E2A01 (C)

What is the direction of an ascending pass for an amateur satellite?

A

C. From south to north

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2
Q

E2A02 (A)

What is the direction of a descending pass for an amateur satellite?

A

A. From north to south

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3
Q

E2A03 (C)

What is the orbital period of an Earth satellite?

A

C. The time it takes for a satellite to complete one revolution around the Earth

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4
Q

E2A04 (B)

What is meant by the term mode as applied to an amateur radio satellite?

A

B. The satellite’s uplink and downlink frequency bands

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5
Q

E2A05 (D)

What do the letters in a satellite’s mode designator specify?

A

D. The uplink and downlink frequency ranges

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6
Q

E2A06 (A)

On what band would a satellite receive signals if it were operating in mode U/V?

A

A. 435 MHz - 438 MHz

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7
Q

E2A07 (D)

Which of the following types of signals can be relayed through a linear transponder?

A

A. FM and CW
B. SSB and SSTV
C. PSK and Packet
D. All of these choices are correct

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8
Q

E2A08 (B)

Why should effective radiated power to a satellite which uses a linear transponder be limited?

A

B. To avoid reducing the downlink power to all other users

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9
Q

E2A09 (A)

What do the terms L band and S band specify with regard to satellite communications?

A

A. The 23 centimeter and 13 centimeter bands

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10
Q

E2A10 (A)

Why may the received signal from an amateur satellite exhibit a rapidly repeating fading effect?

A

A. Because the satellite is spinning

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11
Q

E2A11 (B)

What type of antenna can be used to minimize the effects of spin modulation and Faraday rotation?

A

B. A circularly polarized antenna

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12
Q

E2A12 (D)

What is one way to predict the location of a satellite at a given time?

A

D. By calculations using the Keplerian elements for the specified satellite

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13
Q

E2A13 (B)

What type of satellite appears to stay in one position in the sky?

A

B. Geostationary

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14
Q

E2A14 (C)

What technology is used to track, in real time, balloons carrying amateur radio transmitters?

A

C. APRS

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15
Q

E2B01 (A)

How many times per second is a new frame transmitted in a fast-scan (NTSC) television system?

A

A. 30

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16
Q

E2B02 (C)

How many horizontal lines make up a fast-scan (NTSC) television frame?

A

C. 525

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17
Q

E2B03 D)

How is an interlaced scanning pattern generated in a fast-scan (NTSC) television system?

A

D. By scanning odd numbered lines in one field and even numbered lines in the next

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18
Q

E2B04 (B)

What is blanking in a video signal?

A

B. Turning off the scanning beam while it is traveling from right to left or from bottom to top

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19
Q

E2B05 (C)

Which of the following is an advantage of using vestigial sideband for standard fast- scan TV transmissions?

A

C. Vestigial sideband reduces bandwidth while allowing for simple video detector circuitry

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20
Q

E2B06 (A)

What is vestigial sideband modulation?

A

A. Amplitude modulation in which one complete sideband and a portion of the other are transmitted

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21
Q

E2B07 (B)

What is the name of the signal component that carries color information in NTSC video?

A

B. Chroma

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22
Q

E2B08 (D)

Which of the following is a common method of transmitting accompanying audio with amateur fast-scan television?

A

A. Frequency-modulated sub-carrier
B. A separate VHF or UHF audio link
C. Frequency modulation of the video carrier
D. All of these choices are correct

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23
Q

E2B09 (D)
What hardware, other than a receiver with SSB capability and a suitable computer, is needed to decode SSTV using Digital Radio Mondiale (DRM)?

A

D. No other hardware is needed

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24
Q

E2B10 (A)
Which of the following is an acceptable bandwidth for Digital Radio Mondiale (DRM) based voice or SSTV digital transmissions made on the HF amateur bands?

A

A. 3 KHz

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25
Q

E2B11 (B)

What is the function of the Vertical Interval Signaling (VIS) code sent as part of an SSTV transmission?

A

B. To identify the SSTV mode being used

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26
Q

E2B12 (D)

How are analog SSTV images typically transmitted on the HF bands?

A

D. Varying tone frequencies representing the video are transmitted using single sideband

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27
Q

E2B13 (C)

How many lines are commonly used in each frame of an amateur slow-scan color television picture?

A

C. 128 or 256

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28
Q

E2B14 (A)

What aspect of an amateur slow-scan television signal encodes the brightness of the picture?

A

A. Tone frequency

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29
Q

E2B15 (A)

What signals SSTV receiving equipment to begin a new picture line?

A

A. Specific tone frequencies

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30
Q

E2B16 (D)

Which is a video standard used by North American Fast Scan ATV stations?

31
Q

E2B17 (B)

What is the approximate bandwidth of a slow-scan TV signal?

32
Q

E2B18 (D)

On which of the following frequencies is one likely to find FM ATV transmissions?

A

D. 1255 MHz

33
Q

E2B19 (C)

What special operating frequency restrictions are imposed on slow scan TV transmissions?

A

C. They are restricted to phone band segments and their bandwidth can be no greater than that of a voice signal of the same modulation type

34
Q

E2C01 (A)

Which of the following is true about contest operating?

A

A. Operators are permitted to make contacts even if they do not submit a log

35
Q

E2C02 (A)

Which of the following best describes the term self-spotting in regards to HF contest operating?

A

A. The generally prohibited practice of posting one’s own call sign and frequency on a spotting network

36
Q

E2C03 (A)

From which of the following bands is amateur radio contesting generally excluded?

37
Q

E2C04 (A)

What type of transmission is most often used for a ham radio mesh network?

A

A. Spread spectrum in the 2.4 GHz band

38
Q

E2C05 (B)

What is the function of a DX QSL Manager?

A

B. To handle the receiving and sending of confirmation cards for a DX station

39
Q

E2C06 (C)

During a VHF/UHF contest, in which band segment would you expect to find the highest level of activity?

A

C. In the weak signal segment of the band, with most of the activity near the calling frequency

40
Q

E2C07 (A)

What is the Cabrillo format?

A

A. A standard for submission of electronic contest logs

41
Q

E2C08 (B)

Which of the following contacts may be confirmed through the U.S. QSL bureau system?

A

B. Contacts between a U.S. station and a non-U.S. station

42
Q

E2C09 (C)

What type of equipment is commonly used to implement a ham radio mesh network?

A

C. A standard wireless router running custom software

43
Q

E2C10 (D)

Why might a DX station state that they are listening on another frequency?

A

A. Because the DX station may be transmitting on a frequency that is prohibited to some responding stations
B. To separate the calling stations from the DX station
C. To improve operating efficiency by reducing interference
D. All of these choices are correct

44
Q

E2C11 (A)

How should you generally identify your station when attempting to contact a DX station during a contest or in a pileup?

A

A. Send your full call sign once or twice

45
Q

E2C12 (B)
What might help to restore contact when DX signals become too weak to copy across an entire HF band a few hours after sunset?

A

B. Switch to a lower frequency HF band

46
Q

E2C13 (D)
What indicator is required to be used by U.S.-licensed operators when operating a station via remote control where the transmitter is located in the U.S.?

A

D. No additional indicator is required

47
Q

E2D01 (B)

Which of the following digital modes is especially designed for use for meteor scatter signals?

48
Q

E2D02 (D)

Which of the following is a good technique for making meteor scatter contacts?

A

A. 15 second timed transmission sequences with stations alternating based on location
B. Use of high speed CW or digital modes
C. Short transmission with rapidly repeated call signs and signal reports
D. All of these choices are correct

49
Q

E2D03 (D)

Which of the following digital modes is especially useful for EME communications?

50
Q

E2D04 (C)

What is the purpose of digital store-and-forward functions on an Amateur Radio satellite?

A

C. To store digital messages in the satellite for later download by other stations

51
Q

E2D05 (B)
Which of the following techniques is normally used by low Earth orbiting digital satellites to relay messages around the world?

A

B. Store-and-forward

52
Q

E2D06 (A)

Which of the following describes a method of establishing EME contacts?

A

A. Time synchronous transmissions alternately from each station

53
Q

E2D07 (C)

What digital protocol is used by APRS?

54
Q

E2D08 (A)

What type of packet frame is used to transmit APRS beacon data?

A

A. Unnumbered Information

55
Q

E2D09 (D)

Which of these digital modes has the fastest data throughput under clear communication conditions?

A

D. 300 baud packet

56
Q

E2D10 (C)

How can an APRS station be used to help support a public service communications activity?

A

C. An APRS station with a GPS unit can automatically transmit information to show a mobile station’s position during the event

57
Q

E2D11 (D)

Which of the following data are used by the APRS network to communicate your location?

A

D. Latitude and longitude

58
Q

E2D12 (A)

How does JT65 improve EME communications?

A

A. It can decode signals many dB below the noise floor using FEC

59
Q

E2D13 (A)

What type of modulation is used for JT65 contacts?

A

A. Multi-tone AFSK

60
Q

E2D14 (B)

What is one advantage of using JT65 coding?

A

B. The ability to decode signals which have a very low signal to noise ratio

61
Q

E2E01 (B)

Which type of modulation is common for data emissions below 30 MHz?

62
Q

E2E02 (A)

What do the letters FEC mean as they relate to digital operation?

A

A. Forward Error Correction

63
Q

E2E03 (C)

How is the timing of JT65 contacts organized?

A

C. Alternating transmissions at 1 minute intervals

64
Q

E2E04 (A)

What is indicated when one of the ellipses in an FSK crossed-ellipse display suddenly disappears?

A

A. Selective fading has occurred

65
Q

E2E05 (A)

Which type of digital mode does not support keyboard-to-keyboard operation?

A

A. Winlink

66
Q

E2E06 (C)

What is the most common data rate used for HF packet?

A

C. 300 baud

67
Q

E2E07 (B)

What is the typical bandwidth of a properly modulated MFSK16 signal?

68
Q

E2E08 (B)

Which of the following HF digital modes can be used to transfer binary files?

69
Q

E2E09 (D)

Which of the following HF digital modes uses variable-length coding for bandwidth efficiency?

70
Q

E2E10 (C)

Which of these digital modes has the narrowest bandwidth?

71
Q

E2E11 (A)

What is the difference between direct FSK and audio FSK?

A

A. Direct FSK applies the data signal to the transmitter VFO

72
Q

E2E12 (C)

Which type of control is used by stations using the Automatic Link Enable (ALE) protocol?

A

C. Automatic

73
Q

E2E13 (D)
Which of the following is a possible reason that attempts to initiate contact with a digital station on a clear frequency are unsuccessful?

A

A. Your transmit frequency is incorrect
B. The protocol version you are using is not the supported by the digital station
C. Another station you are unable to hear is using the frequency
D. All of these choices are correct

Ham Extra 2016-2020 (10 decks)

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