nagyhullámú

"Nagyhullámú" is a Hungarian term that translates to "long wave" or "large wave." In the context of radio communication, it refers to radio waves with wavelengths ranging from 1,000 meters to 10,000 meters, corresponding to frequencies between 30 kilohertz (kHz) and 300 kilohertz (kHz). These frequencies fall within the Very Low Frequency (VLF) and Low Frequency (LF) bands.

Long waves are characterized by their ability to travel over very long distances, often thousands of kilometers, due to diffraction around the curvature of the Earth. They are also less susceptible to atmospheric interference and absorption compared to shorter wavelengths. This makes them suitable for certain specialized applications.

Historically, long waves were used extensively for broadcasting, particularly for international radio transmissions and maritime communication. Their ability to penetrate water to some extent also made them useful for submarine communication. However, with the advent of more efficient technologies and shorter wavelengths, the use of long waves for general broadcasting has declined significantly. Today, their primary applications are in navigation systems, time signal broadcasts, and specialized military communications. The large antennas required for efficient transmission and reception are a notable characteristic associated with long wave technology.