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2023 General pool
17 / 429 questions need explanations
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Which HF bands have segments exclusively allocated to Amateur Extra licensees?
  • All HF bands (0% chose this)
  • 80 meters, 40 meters, 20 meters, and 15 meters (0% chose this)
  • All HF bands except 160 meters and 10 meters (0% chose this)
  • 60 meters, 30 meters, 17 meters, and 12 meters (0% chose this)
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When may third-party messages be transmitted via remote control?
  • Under any circumstances in which third party messages are permitted by FCC rules (0% chose this)
  • Under no circumstances except for emergencies (0% chose this)
  • Only when the message is intended for licensed radio amateurs (0% chose this)
  • Only when the message is intended for third parties in areas where licensing is controlled by the FCC (0% chose this)
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Which of the following is good amateur practice for net management?
  • Always use multiple sets of phonetics during check-in (0% chose this)
  • Have a backup frequency in case of interference or poor conditions (0% chose this)
  • Transmit the full net roster at the beginning of every session (0% chose this)
  • All these choices are correct (0% chose this)
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How often may RACES training drills and tests be routinely conducted without special authorization?
  • No more than 1 hour per month (0% chose this)
  • No more than 2 hours per month (0% chose this)
  • No more than 1 hour per week (0% chose this)
  • No more than 2 hours per week (0% chose this)
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What is VARA?
  • A low signal-to-noise digital mode used for EME (moonbounce) (0% chose this)
  • A digital protocol used with Winlink (0% chose this)
  • A radio direction finding system used on VHF and UHF (0% chose this)
  • DX spotting system using a network of software defined radios (0% chose this)
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What symptoms may result from other signals interfering with a PACTOR or VARA transmission?
  • Frequent retries or timeouts (0% chose this)
  • Long pauses in message transmission (0% chose this)
  • Failure to establish a connection between stations (0% chose this)
  • All these choices are correct (0% chose this)
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What is another name for a Winlink Remote Message Server?
  • Terminal Node Controller (0% chose this)
  • Gateway (0% chose this)
  • RJ-45 (0% chose this)
  • Printer/Server (0% chose this)
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What is meant by the term “critical frequency” at a given incidence angle?
  • The highest frequency which is refracted back to Earth (0% chose this)
  • The lowest frequency which is refracted back to Earth (0% chose this)
  • The frequency at which the signal-to-noise ratio approaches unity (0% chose this)
  • The frequency at which the signal-to-noise ratio is 6 dB (0% chose this)
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Which of the following is a common use of the dual-VFO feature on a transceiver?
  • To allow transmitting on two frequencies at once (0% chose this)
  • To permit full duplex operation -- that is, transmitting and receiving at the same time (0% chose this)
  • To transmit on one frequency and listen on another (0% chose this)
  • To improve frequency accuracy by allowing variable frequency output (VFO) operation (0% chose this)
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In what configuration are the individual cells in a solar panel connected together?
  • Series-parallel (0% chose this)
  • Shunt (0% chose this)
  • Bypass (0% chose this)
  • Full-wave bridge (0% chose this)
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What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?
  • Ground the solar panel outer metal framework (0% chose this)
  • Ensure the battery is placed terminals-up (0% chose this)
  • A series resistor must be in place (0% chose this)
  • The solar panel must have a charge controller (0% chose this)
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Which parameter affects receiver sensitivity?
  • Input amplifier gain (0% chose this)
  • Demodulator stage bandwidth (0% chose this)
  • Input amplifier noise figure (0% chose this)
  • All these choices are correct (0% chose this)
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Which of these functions is performed by software in a software-defined radio (SDR)?
  • Filtering (0% chose this)
  • Detection (0% chose this)
  • Modulation (0% chose this)
  • All these choices are correct (0% chose this)
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What is a link budget?
  • The financial costs associated with operating a radio link (0% chose this)
  • The sum of antenna gains minus system losses (0% chose this)
  • The sum of transmit power and antenna gains minus system losses as seen at the receiver (0% chose this)
  • The difference between transmit power and receiver sensitivity (0% chose this)
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What is link margin?
  • The opposite of fade margin (0% chose this)
  • The difference between received power level and minimum required signal level at the input to the receiver (0% chose this)
  • Transmit power minus receiver sensitivity (0% chose this)
  • Receiver sensitivity plus 3 dB (0% chose this)
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What must you do if your station fails to meet the FCC RF exposure exemption criteria?
  • Perform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65 (0% chose this)
  • Contact the FCC for permission to transmit (0% chose this)
  • Perform an RF exposure evaluation in accordance with World Meteorological Organization guidelines (0% chose this)
  • Use an FCC-approved band-pass filter (0% chose this)
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Where should lightning arrestors be located?
  • Where the feed lines enter the building (0% chose this)
  • On the antenna, opposite the feed point (0% chose this)
  • In series with each ground lead (0% chose this)
  • At the closest power pole ground electrode (0% chose this)
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