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G2A06

OPERATING PROCEDURES · - Phone operating procedures: USB/LSB conventions, breaking into a contact, transmitter setup for voice operation; answering DX stations

G2A06G2A →

Which of the following is an advantage of using single sideband, as compared to other analog voice modes on the HF amateur bands?

  1. AVery high-fidelity voice modulation
  2. BLess subject to interference from atmospheric static crashes
  3. CEase of tuning on receive and immunity to impulse noise
  4. DLess bandwidth used and greater power efficiency
Why SSB transmits only one sideband and suppresses the carrier and the other sideband, so it occupies about 3 kHz instead of the roughly 6 kHz an AM signal needs. Because no transmitter power is wasted on a carrier that carries no information, all of the output goes into the intelligence-bearing sideband, giving much better talk power for a given rig. That combination of narrow bandwidth and power efficiency is why SSB dominates HF voice operating.
Watch out High-fidelity audio and easy tuning actually describe AM, which has a carrier to zero-beat against and wider audio response; FM is the mode that resists impulse and static-crash noise, and it is used on VHF/UHF rather than HF.
SSB = half the bandwidth, none wasted on a carrier. AM for fidelity, FM for noise, SSB for efficiency.
HamSandwich explanation, first draft. The question and answers are the NCVEC text.
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The rest of G2A

  1. G2A01 Which mode is most commonly used for voice communications on frequencies of 14 MHz or higher?
  2. G2A02 Which mode is most commonly used for voice communications on the 160-, 75-, and 40-meter bands?
  3. G2A03 Which mode is most commonly used for SSB voice communications in the VHF and UHF bands?
  4. G2A04 Which mode is most commonly used for voice communications on the 17- and 12-meter bands?
  5. G2A05 Which mode of voice communication is most commonly used on the HF amateur bands?
  6. G2A06 Which of the following is an advantage of using single sideband, as compared to other analog voice modes on t…
  7. G2A07 Which of the following statements is true of single sideband (SSB)?
  8. G2A08 What is the recommended way to break into a phone contact?
  9. G2A09 Why do most amateur stations use lower sideband on the 160-, 75-, and 40-meter bands?
  10. G2A10 Which of the following statements is true of VOX operation versus PTT operation?
  11. G2A11 Generally, who should respond to a station in the contiguous 48 states calling "CQ DX"?
  12. G2A12 What control is typically adjusted for proper ALC setting on a single sideband transceiver?
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