DXRDXR ASOC EXAM PRACTICE PORTAL · VU3DXR.IN
OPEN LEARNING LIBRARY

ASOC Question Bank

Browse MCQs, correct answers and explanations free of charge. No registration is required.

700 matching questions

Question #681Amateur Radio Regulations and Licensing

Times in an Indian amateur log should be kept in

  1. IST (as per current rules) ✓ Correct answer
  2. UTC only always
  3. Local sundial time
  4. Any random zone
Explanation: Current Indian rules specify IST for log times.

Open this question separately

Question #682Amateur Radio Regulations and Licensing

The distress signal in radiotelephony is

  1. MAYDAY ✓ Correct answer
  2. SOS only on phone
  3. HELLO
  4. BREAK
Explanation: MAYDAY is the international radiotelephone distress signal.

Open this question separately

Question #683Amateur Radio Regulations and Licensing

The distress signal in radiotelegraphy (Morse) is

  1. SOS ✓ Correct answer
  2. MAYDAY
  3. QRT
  4. CQ
Explanation: SOS is the Morse distress signal.

Open this question separately

Question #684Operating Procedures, Morse Code and Phonetics

The phonetic alphabet word for the letter A is

  1. Alpha ✓ Correct answer
  2. Adam
  3. Able
  4. America
Explanation: ITU phonetic for A is Alpha.

Open this question separately

Question #685Operating Procedures, Morse Code and Phonetics

The phonetic alphabet word for the letter B is

  1. Bravo ✓ Correct answer
  2. Baker
  3. Boston
  4. Britain
Explanation: ITU phonetic for B is Bravo.

Open this question separately

Question #686Operating Procedures, Morse Code and Phonetics

The phonetic alphabet word for the letter S is

  1. Sierra ✓ Correct answer
  2. Sugar
  3. Sam
  4. Singapore
Explanation: ITU phonetic for S is Sierra.

Open this question separately

Question #687Operating Procedures, Morse Code and Phonetics

QTH means

  1. What is your location? / My location is… ✓ Correct answer
  2. Stop sending
  3. Send faster
  4. Increase power
Explanation: QTH refers to location.

Open this question separately

Question #688Operating Procedures, Morse Code and Phonetics

QSY means

  1. Change frequency ✓ Correct answer
  2. Stop sending
  3. Send slower
  4. Decrease power
Explanation: QSY means change frequency.

Open this question separately

Question #689Operating Procedures, Morse Code and Phonetics

QRZ means

  1. Who is calling me? ✓ Correct answer
  2. Stop sending
  3. Send faster
  4. Your signal is fading
Explanation: QRZ asks who is calling.

Open this question separately

Question #690Operating Procedures, Morse Code and Phonetics

QRM means

  1. Interference from other stations ✓ Correct answer
  2. Natural noise
  3. Stop sending
  4. Location
Explanation: QRM is man-made interference from other stations.

Open this question separately

Question #691Operating Procedures, Morse Code and Phonetics

QRN means

  1. Natural static / atmospheric noise ✓ Correct answer
  2. Station interference
  3. Change frequency
  4. Acknowledge receipt
Explanation: QRN is natural/atmospheric noise.

Open this question separately

Question #692Operating Procedures, Morse Code and Phonetics

The prosign AR means

  1. End of message ✓ Correct answer
  2. Go ahead only
  3. Stand by
  4. Start of message
Explanation: AR is the end-of-message prosign.

Open this question separately

Question #693Operating Procedures, Morse Code and Phonetics

The prosign AS means

  1. Wait / stand by ✓ Correct answer
  2. End of message
  3. Go ahead
  4. New line only
Explanation: AS means wait.

Open this question separately

Question #694Operating Procedures, Morse Code and Phonetics

RST report refers to

  1. Readability, Signal strength, Tone ✓ Correct answer
  2. Radio, Satellite, Transmitter
  3. Range, Speed, Time
  4. Resistance, Signal, Test
Explanation: RST = Readability, Strength, Tone.

Open this question separately

Question #695Amateur Radio Regulations and Licensing

A beacon station typically transmits

  1. One-way signals for propagation monitoring ✓ Correct answer
  2. Two-way chats only
  3. Broadcast entertainment
  4. Commercial advertisements
Explanation: Beacons send one-way signals useful for propagation study.

Open this question separately

Question #696Amateur Radio Regulations and Licensing

Repeater stations are commonly used on

  1. VHF and UHF ✓ Correct answer
  2. Only on DC power lines
  3. Only below 100 kHz
  4. Only optical bands
Explanation: Voice repeaters are common on VHF/UHF.

Open this question separately

Question #697Amateur Radio Regulations and Licensing

The standard 2-metre amateur band in many regions includes

  1. 144–146 MHz ✓ Correct answer
  2. 14–14.35 MHz
  3. 7–7.2 MHz
  4. 28–29.7 MHz
Explanation: 144–146 MHz is the common Region-3 2 m allocation segment used in India.

Open this question separately

Question #698Amateur Radio Regulations and Licensing

The 40-metre amateur band is around

  1. 7 MHz ✓ Correct answer
  2. 14 MHz
  3. 21 MHz
  4. 28 MHz
Explanation: The 40 m band is near 7 MHz.

Open this question separately

Question #699Amateur Radio Regulations and Licensing

The 20-metre amateur band is around

  1. 14 MHz ✓ Correct answer
  2. 7 MHz
  3. 3.5 MHz
  4. 21 MHz
Explanation: The 20 m band is near 14 MHz.

Open this question separately

Question #700Amateur Radio Regulations and Licensing

Before transmitting you should

  1. Listen first to avoid interfering ✓ Correct answer
  2. Always transmit at maximum power
  3. Ignore other users
  4. Send music to test
Explanation: Listen before transmitting is standard operating practice.

Open this question separately