ARRL Grammar Fundamentals 3 — Questions and Answers
Question 1: In the NATO/ITU phonetic alphabet used in amateur radio, which word represents the letter 'F'?
- Foxtrot (Correct answer)
- Frank
- Freddie
- Fox
Correct answer: Foxtrot
Foxtrot is the standard ITU phonetic alphabet word for the letter F, adopted to ensure clarity over radio channels.
Question 2: In the RST signal-reporting system, what does the letter 'R' represent?
- Reliability
- Readability (Correct answer)
- Range
- Reception
Correct answer: Readability
RST stands for Readability, Strength, and Tone; 'R' rates how well the signal can be understood on a scale of 1 to 5.
Question 3: What is the NATO phonetic alphabet word for the letter 'W'?
- Washington
- Whiskey (Correct answer)
- Wilma
- Willie
Correct answer: Whiskey
Whiskey is the standard ITU/NATO phonetic word for W, chosen for its distinct sound that carries clearly over voice channels.
Question 4: A phone signal report of '59' in the RST system means the signal is:
- Barely readable with strong interference
- Perfectly readable with very strong signal strength (Correct answer)
- Readable with moderate noise
- Unreadable but signal present
Correct answer: Perfectly readable with very strong signal strength
A 5-9 report means Readability 5 (perfectly readable) and Strength 9 (extremely strong signal), the best possible phone report.
Question 5: In the RST system used for CW contacts, what does the 'T' component evaluate?
- Timing accuracy of the operator
- Tone quality of the CW signal (Correct answer)
- Transmitter power output
- Test character clarity
Correct answer: Tone quality of the CW signal
The 'T' (Tone) component rates the quality and purity of the CW carrier wave on a scale of 1 to 9, relevant only for Morse code contacts.
Question 6: Which NATO phonetic word correctly represents the letter 'M'?
- Michael
- Metro
- Mike (Correct answer)
- Maple
Correct answer: Mike
Mike is the ITU/NATO phonetic alphabet word for M, standardized to avoid confusion with similar-sounding letters over radio.
Question 7: A readability rating of '1' in the RST system means the received signal is:
- Perfectly readable
- Readable with difficulty
- Unreadable (Correct answer)
- Barely perceptible
Correct answer: Unreadable
Readability 1 means the signal is completely unreadable — no intelligible characters or words can be copied from the transmission.
ARRL Grammar Fundamentals 3
In the NATO/ITU phonetic alphabet used in amateur radio, which word represents the letter 'F'?