hosszúhullám

Hosszúhullám, or long wave in English, refers to a type of electromagnetic wave characterized by its extended wavelength, typically exceeding hundreds of meters. This term is commonly used in the context of radio frequency technology, where long waves occupy the lower portion of the radio spectrum, generally below 300 kHz, corresponding to wavelengths longer than a kilometer.

Long wave signals have distinct propagation characteristics. Due to their long wavelengths, these waves can diffract around obstacles and follow the Earth's surface contours, allowing them to travel vast distances beyond the horizon. This property makes hosszúhullám suitable for long-range communication, especially in maritime and military applications. Additionally, long wave transmissions are less affected by atmospheric disturbances and ionospheric conditions compared to higher frequency waves, providing more reliable coverage in various weather situations.

Historically, hosszúhullám has been used for maritime navigation aids, time signals, and broadcasting services. In many countries, long wave radio stations continue to operate for these purposes, leveraging their ability to cover large geographical areas with minimal infrastructure.

Despite its advantages, hosszúhullám has limitations, including lower data transmission capacities and larger antenna requirements due to its wavelength length. Consequently, its use has declined in favor of higher frequency bands capable of higher bandwidth communication, such as FM and digital broadcasting.

In summary, hosszúhullám describes long-wavelength electromagnetic waves significant for their propagation properties and historical importance in long-distance radio communication. Their unique characteristics remain relevant in specific applications where wide coverage and signal reliability are prioritized.