1. This product includes four independent bandpass filters, divided into four frequency bands: P1 filter (0.5-1.5MHz) for AM radio reception; P2 filter (4.5-12MHz) for shortwave low-frequency bands and the 40-meter amateur band; P3 filter (12-30MHz) for shortwave high-frequency bands and the 20-meter, 15-meter, and 10-meter amateur bands; and P4 filter for FM broadcast frequencies (88-108MHz).
2. Can be used with a 1-to-4 active splitter to provide pre-filter functionality for SDR, radio, and receivers.
3. Complements the lack of a pre-filter design in all-metal aluminum-cased malachite radios, reducing interference from AM, shortwave, FM, and broadcast frequencies.
4. Enables simultaneous reception of multiple channels and multiple frequency bands.
5. Dimensions: 49x45x19mm
6. Package contents:
- Filter x 1
- Stands x 1