What do all radio beacons except compass locators transmit?

Radio beacons, which are used in navigation, are designed to assist pilots in locating their position relative to certain points. The correct answer indicates that all radio beacons, apart from compass locators, transmit a continuous three-letter identification in code. This three-letter code is essential for pilots and air traffic control to identify the specific beacon and ensure proper navigation.

When a pilot approaches a beacon, the three-letter code serves as a unique identifier that confirms they have reached the intended navigational aid. This is particularly important in complex airspace or during instrument flight operations where visual references are limited.

In contrast, compass locators provide a shorter identification and do not follow the same three-letter convention, which distinguishes them from other types of radio beacons. Understanding the function and identification signals of different beacons is crucial for effective navigation and situational awareness while flying.