Kõrgsageduskõlari
Kõrgsageduskõlari, also known as high-frequency radio receivers, are electronic devices designed to detect and process radio signals within the high-frequency (HF) band, typically ranging from 3 MHz to 30 MHz. These devices are essential for long-distance communication, particularly in amateur radio, military operations, and maritime and aviation navigation. The HF band is notable for its ability to propagate signals over long distances via ionospheric reflection, making it ideal for global communication when other methods, such as line-of-sight transmission, are impractical.
Kõrgsageduskõlari operate by tuning into specific frequencies within the HF range, allowing users to receive or
In Estonia and other regions, these devices are commonly used by radio amateurs (hams) for international contacts,
Maintenance of a kõrgsageduskõlari involves regular calibration, checking for corrosion in connections, and ensuring the antenna