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700 matching questions

Question #581Radio Theory and Communication Principles

A receiver with high selectivity has a

  1. wide bandwidth
  2. wide tuning range
  3. narrow bandwidth ✓ Correct answer
  4. narrow tuning range

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Question #582Basic Electricity and Electronics

One important application for diodes is recovering information from transmitted signals. This is referred to as

  1. biasing
  2. rejuvenation
  3. ionization
  4. demodulation ✓ Correct answer

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Question #583Radio Theory and Communication Principles

Morse code is usually transmitted by radio as

  1. an interrupted carrier ✓ Correct answer
  2. a voice modulated carrier
  3. a continuous carrier
  4. a series of clicks

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Question #584Antennas and Radio Wave Propagation

Magnetic and electric fields about an antenna are

  1. parallel to each other
  2. determined by the type of antenna used
  3. perpendicular to each other ✓ Correct answer
  4. variable with the time of day

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Question #585Antennas and Radio Wave Propagation

A half-wave antenna is often called a

  1. bi-polar
  2. Yagi
  3. dipole ✓ Correct answer
  4. beam

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Question #586Radio Theory and Communication Principles

All communications frequencies throughout the spectrum are affected in varying degrees by the

  1. atmospheric conditions
  2. ionosphere
  3. aurora Borealis
  4. sun ✓ Correct answer

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Question #587Amateur Radio Regulations and Licensing

All amateur stations, regardless of the mode of transmission used, must be equipped with

  1. a reliable means for determining the operating radio frequency ✓ Correct answer
  2. a dummy antenna
  3. an over modulation indicating device
  4. a DC power meter

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Question #588Amateur Radio Regulations and Licensing

You identify your amateur station by transmitting your

  1. "handle"
  2. call sign ✓ Correct answer
  3. first name and your location
  4. full name

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Question #589Amateur Radio Regulations and Licensing

Which Call sign holders are allowed to make contact via Ham Satellite.

  1. vu2xxx ✓ Correct answer
  2. vu3xxx
  3. Both a & b
  4. None

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Question #590Operating Procedures, Morse Code and Phonetics

What does the Q signal "QSL" mean?

  1. Send slower
  2. We have already confirmed by card
  3. I acknowledge receipt ✓ Correct answer
  4. We have worked before

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Question #591Amateur Radio Regulations and Licensing

What is the “Q” signal used to indicate that you are receiving interference‘ from other stations?

  1. QRM ✓ Correct answer
  2. QRN
  3. QTH
  4. QSB

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Question #592Amateur Radio Regulations and Licensing

What is the term used to describe an amateur station that is transmitting and receiving on the same frequency?

  1. Full duplex communication
  2. Diplex communication
  3. Simplex communication ✓ Correct answer
  4. Half duplex communication

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Question #593Amateur Radio Regulations and Licensing

What is the allowed repeater frequency offset in the 2 meter band?

  1. Plus 500 kHz
  2. Plus or minus 600 kHz ✓ Correct answer
  3. Minus 500 kHz
  4. Only plus 600 kHz

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Question #594Amateur Radio Regulations and Licensing

When the Amateur Service is a secondary user of a band and another service is the primary user, this means

  1. nothing at all, all users have equal rights to operate
  2. amateurs may only use the band during emergencies
  3. the band may be used by amateurs provided they do not cause harmful interference to primary users ✓ Correct answer
  4. you may increase transmitter power to overcome any interference caused by primary users

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Question #595Amateur Radio Regulations and Licensing

What information is contained a station log?

  1. Date and time of contact
  2. Band and or frequency of the contact
  3. Call sign of station contacted and the signal report given
  4. all the above ✓ Correct answer

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Question #596Operating Procedures, Morse Code and Phonetics

What is the meaning of the Q signal “QRS”?

  1. Interference from static
  2. Send "RST” report
  3. Radio station location
  4. Send more slowly ✓ Correct answer

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Question #597Operating Procedures, Morse Code and Phonetics

A signal report of "5 and 1" indicates

  1. very low intelligibility but good signal strength
  2. perfect intelligibility but very low signal strength ✓ Correct answer
  3. perfect intelligibility, high signal strength
  4. medium intelligibility and signal strength

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Question #598Amateur Radio Regulations and Licensing

An amateur station may transmit unidentified signals

  1. when making a brief test not intended for reception by anyone else
  2. when conducted on a clear frequency when no interference will be caused
  3. when the meaning of transmitted information must be obscured to preserve secrecy
  4. never, such transmissions are not permitted. ✓ Correct answer

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Question #599Amateur Radio Regulations and Licensing

When conditions are good and signals are strong operators should

  1. Increase power to the maximum permissible by regulation.
  2. Increase power and use full compressor facility.
  3. Use only sufficient power to make a good contact. ✓ Correct answer
  4. Increase power to the maximum capability of the equipment.

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Question #600Operating Procedures, Morse Code and Phonetics

Morse code is permitted for use by

  1. Only operators who have passed a Morse code test
  2. Those stations with computers to decode it
  3. Any amateur radio operator ✓ Correct answer
  4. Only those stations equipped for headphone reception

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