ARRL Literary Analysis 3 — Questions and Answers
Question 1: FCC Part 97.101(a) states that each amateur station must be operated only by its licensee. How do the rules accommodate third-party traffic handling?
- Third-party traffic is prohibited under Part 97
- A control operator who holds an amateur license must be present and responsible for the transmission (Correct answer)
- The third party must hold a Technician license or higher
- Third-party messages are permitted only on HF bands
Correct answer: A control operator who holds an amateur license must be present and responsible for the transmission
Part 97 allows third-party participation in amateur communications as long as a licensed control operator is present and accountable for the station's operation.
Question 2: The ARRL Handbook discusses 'Q' (quality factor) of resonant circuits. What does a high Q value indicate when analyzing a filter's performance?
- The filter passes a wide range of frequencies equally
- The filter has a narrow bandwidth relative to its resonant frequency and low losses (Correct answer)
- The filter requires higher supply voltage to operate
- Q has no relationship to filter selectivity
Correct answer: The filter has a narrow bandwidth relative to its resonant frequency and low losses
A high Q factor indicates a resonant circuit with narrow bandwidth and low energy loss, resulting in greater selectivity.
Question 3: Reading FCC Part 97.3(a)(10), the definition of 'control operator' specifies which of the following?
- The owner of the station equipment
- An amateur operator designated by the station licensee to be responsible for the station's transmissions (Correct answer)
- Any licensed amateur who uses the station
- The FCC-appointed supervisor for a club station
Correct answer: An amateur operator designated by the station licensee to be responsible for the station's transmissions
Part 97.3(a)(10) defines a control operator as an amateur operator designated by the licensee to be responsible for the transmissions of an amateur station.
Question 4: In ARRL contest rules, the term 'dupe' refers to what situation?
- A contact made with an operator running two radios simultaneously
- A repeated contact with the same station on the same band and mode, which does not count for credit (Correct answer)
- A contact verified by two independent log checkers
- Operating in two contest categories at once
Correct answer: A repeated contact with the same station on the same band and mode, which does not count for credit
A dupe (duplicate) is a contact with a station already worked on the same band and mode; most contest rules prohibit claiming credit for dupes.
Question 5: The ARRL Antenna Book uses 'radiation resistance' as a key parameter. What does this value represent?
- The ohmic loss of the antenna's wire or element
- A fictitious resistance that, if substituted for the antenna, would dissipate the same power as the antenna radiates (Correct answer)
- The impedance of free space (377 ohms)
- The resistance measured at the base of a vertical antenna
Correct answer: A fictitious resistance that, if substituted for the antenna, would dissipate the same power as the antenna radiates
Radiation resistance is a theoretical equivalent resistance representing the power radiated by the antenna, used to calculate antenna efficiency.
Question 6: When FCC Part 97 uses the term 'automatically controlled digital station' (ACDS), which interpretation applies?
- Any station using a computer to log contacts
- A station transmitting digital signals without a control operator monitoring at the control point during the transmission (Correct answer)
- A station that automatically switches between bands
- A remotely controlled station using a smartphone app
Correct answer: A station transmitting digital signals without a control operator monitoring at the control point during the transmission
An ACDS under Part 97.221 transmits digital emissions automatically, without a control operator present and continuously monitoring at the control point.
Question 7: The ARRL Handbook section on transmission lines discusses 'velocity factor.' Which statement correctly interprets this concept?
- Velocity factor is the ratio of a signal's speed in the transmission line to the speed of light in a vacuum (Correct answer)
- Velocity factor describes how quickly a transceiver reaches full output power
- A velocity factor greater than 1.0 is possible for coaxial cable
- Velocity factor only applies to open-wire feedlines
Correct answer: Velocity factor is the ratio of a signal's speed in the transmission line to the speed of light in a vacuum
Velocity factor (VF) is the ratio of signal propagation speed in a transmission line to the speed of light in free space, always less than 1.0.
ARRL Literary Analysis 3
FCC Part 97.101(a) states that each amateur station must be operated only by its licensee.
How do the rules accommodate third-party traffic handling?