Question T8C02
From subelement T8 - T8C
Which of these items would be useful for a hidden transmitter hunt?
Why is this correct?
A directional antenna is correct because hidden transmitter hunts (also called fox hunts or radio direction finding) require determining the direction of a signal source. Directional antennas like Yagi beams concentrate reception in one direction and have nulls in others, allowing you to pinpoint transmission direction by rotating the antenna. SWR meters measure antenna match, and noise bridges measure impedance - neither helps locate signal direction.
Memory tip
Pattern recognition: Questions about locating or finding radio sources always involve directional capabilities. The key insight is that 'hunt' implies tracking direction, so look for directional equipment. Remember: finding requires pointing, pointing requires directional antennas.
Learn more
Radio direction finding (RDF) is a fundamental amateur radio skill with practical applications beyond fox hunts. Emergency services use RDF to locate interference sources that disrupt repeaters or cause harmful interference under Part 97.121. Modern RDF employs techniques from simple beam antennas to sophisticated Doppler arrays and software-defined radio processing. Many clubs organize regular fox hunts to develop these skills in a fun, competitive environment.
Think about it
Why do you think hidden transmitter hunts are popular training activities for emergency communications volunteers?