High-pass filter for shortwave radios: The HF low-pass filter is designed to operate effectively in the 5 MHz to 30 MHz frequency range. Excellent performance: The circuit board is made from a 6 mm thick, double-sided sheet metal and 57 g copper weight, optimized for reliable current flow. Efficient heat dissipation: With a large heat dissipation area, this filter can operate continuously for extended periods without overheating. Wide voltage range: The filter works with a 12 V input and provides stable, consistent performance. Typical applications - Use in a home or bench top shortwave radio or transceiver to improve selectivity and reduce unwanted harmonics in the 5-30 MHz band. - Use in portable or vehicle-based shortwave receivers powered by 12 V, enabling reliable operation during extended listening or field use. - Use in base stations or emergency communication setups where sustained operation and stable performance are required.