Lühimaadustele
Lühimaadustele, also known as shortwave radio, refers to the use of radio waves in the high frequency (HF) band, typically between 3 and 30 MHz. This frequency range is particularly useful for long-distance communication, as it can propagate over the horizon and even reflect off the ionosphere, allowing signals to travel thousands of miles. Shortwave radio is widely used for international broadcasting, amateur radio, and emergency communications.
The ionosphere, a layer of the Earth's atmosphere, plays a crucial role in shortwave radio propagation. It
Shortwave radio signals can be affected by various factors, including solar activity, time of day, and geographical
Shortwave radio has a rich history, dating back to the early 20th century. It was instrumental in