Nondirectional beacons transmitting a continuous carrier are typically associated with which frequency range?

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Study for the Pilot's Handbook of Aeronautical Knowledge Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Nondirectional beacons transmitting a continuous carrier are typically associated with which frequency range?

Explanation:
Nondirectional beacons operate in the medium-frequency navigation band, which is roughly 190 to 535 kHz. They transmit a continuous carrier so that aircraft receivers can pick up a steady signal and, with a direction-finding system, determine bearing. This MF range provides reliable ground-wave propagation for navigation signals and keeps antenna sizes practical for both the beacon site and aircraft equipment. Frequencies much lower would need unrealistically large antennas or suffer poor propagation, while much higher frequencies (GHz) rely on line-of-sight and different systems.

Nondirectional beacons operate in the medium-frequency navigation band, which is roughly 190 to 535 kHz. They transmit a continuous carrier so that aircraft receivers can pick up a steady signal and, with a direction-finding system, determine bearing. This MF range provides reliable ground-wave propagation for navigation signals and keeps antenna sizes practical for both the beacon site and aircraft equipment. Frequencies much lower would need unrealistically large antennas or suffer poor propagation, while much higher frequencies (GHz) rely on line-of-sight and different systems.

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