Study Amateur Extra E2A

E2A

OPERATING PROCEDURES

Amateur radio in space: amateur satellites; orbital mechanics; frequencies and modes; satellite hardware; satellite operations

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E2A01

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

  1. A From west to east
  2. B From east to west
  3. C From south to north
  4. D From north to south
E2A02

Which of the following is characteristic of an inverting linear transponder?

  1. A Doppler shift is reduced because the uplink and downlink shifts are in opposite directions
  2. B Signal position in the band is reversed
  3. C Upper sideband on the uplink becomes lower sideband on the downlink, and vice versa
  4. D All these choices are correct
E2A03

How is an upload signal processed by an inverting linear transponder?

  1. A The signal is detected and remodulated on the reverse sideband
  2. B The signal is passed through a nonlinear filter
  3. C The signal is reduced to I and Q components, and the Q component is filtered out
  4. D The signal is mixed with a local oscillator signal and the difference product is transmitted
E2A04

What is meant by the "mode" of an amateur radio satellite?

  1. A Whether the satellite is in a low earth or geostationary orbit
  2. B The satellite's uplink and downlink frequency bands
  3. C The satellite's orientation with respect to the Earth
  4. D Whether the satellite is in a polar or equatorial orbit
E2A05

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

  1. A Power limits for uplink and downlink transmissions
  2. B The location of the ground control station
  3. C The polarization of uplink and downlink signals
  4. D The uplink and downlink frequency ranges
E2A06

What are Keplerian elements?

  1. A Parameters that define the orbit of a satellite
  2. B Phase reversing elements in a Yagi antenna
  3. C High-emission heater filaments used in magnetron tubes
  4. D Encrypting codes used for spread spectrum modulation
E2A07

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

  1. A FM and CW
  2. B SSB and SSTV
  3. C PSK and packet
  4. D All these choices are correct
E2A08

Why should effective radiated power (ERP) be limited to a satellite that uses a linear transponder?

  1. A To prevent creating errors in the satellite telemetry
  2. B To avoid reducing the downlink power to all other users
  3. C To prevent the satellite from emitting out-of-band signals
  4. D To avoid interfering with terrestrial QSOs
E2A09

What do the terms "L band" and "S band" specify?

  1. A The 23- and 13-centimeter bands
  2. B The 2-meter and 70-centimeter bands
  3. C FM and digital store-and-forward systems
  4. D Which sideband to use
E2A10

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

  1. A HEO
  2. B Geostationary
  3. C Geomagnetic
  4. D LEO
E2A11

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

  1. A A linearly polarized antenna
  2. B A circularly polarized antenna
  3. C An isotropic antenna
  4. D A log-periodic dipole array
E2A12

What is the purpose of digital store-and-forward functions on an amateur radio satellite?

  1. A To upload operational software for the transponder
  2. B To delay download of telemetry between satellites
  3. C To hold digital messages in the satellite for later download
  4. D To relay messages between satellites
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