What frequency does the glideslope operate at the bottom?

The glideslope component of the Instrument Landing System (ILS) operates at a frequency of 150 Hz. This frequency is part of the precision approach system that helps guide pilots as they descend towards the runway. The glideslope provides vertical guidance, allowing for a smooth and accurate descent angle during landing.

Understanding the frequency is crucial because it ensures that pilots can tune their equipment correctly to receive the glideslope signal, which is necessary for precise approach and landing in instrument meteorological conditions. The 150 Hz frequency is well established and widely recognized in aeronautical communications, making it an essential part of ILS operations. Knowledge of this frequency can enhance a pilot's situational awareness and contribute to safe flight operations.