Enhance your radio and SDR listening experience with this versatile Four-in-One Bandpass Filter, designed to provide clear and precise signal reception across multiple frequency bands. Constructed with durable metal housing, this compact filter unit integrates four independent bandpass filters, each tailored for specific radio frequency ranges, making it an essential accessory for amateur radio enthusiasts and radio operators. Key Features: · Four Independent Bandpass Filters: Includes P1, P2, P3, and P4 filters, each operating within distinct frequency bands to ensure optimized signal reception without interference. · P1 Filter (0.5-1.5MHz): Perfectly suited for MediumWave radio listening, providing clear audio output for AM radio broadcasts. · P2 Filter (4.5-12MHz): Designed for ShortWave low frequency band and the 40 meter amateur radio frequency band, ideal for extended amateur radio applications. · P3 Filter (12-30MHz): Covers shortwave high-frequency bands including the 20 meter, 15 meter, and 10 meter amateur radio frequencies, enabling versatile high-frequency signal reception. · P4 Filter (88-108MHz): Dedicated to FM broadcasting frequencies, delivering superior filtering for FM radio signals. · Compact and Durable Metal Construction: Small-sized (49 x 45 x 19mm) and lightweight (55g) metal casing ensures durability while maintaining portability for easy integration with your radio setup. · Multi-Channel and Multi-Band Reception: Compatible with one-to-four source splitters, this pre-filter enhances simultaneous multi-channel and multi-band reception capability for SDR, radios, and receivers. Specifications: · Material: Metal · Color: Black · Dimensions: 49 x 45 x 19mm (1.9 x 1.8 x 0.8 inches) · Weight: 55g (1.9 ounces) · Package Size: 75 x 72 x 30mm (3.0 x 2.8 x 1.2 inches) · Package Weight: 65g (2.3 ounces) Package Includes: · 1 x Four-in-One Bandpass Filter This Four-in-One Bandpass Filter is a practical solution to improve signal clarity and reception across medium wave, shortwave, and FM broadcast bands. Its robust metal build and compact design make it an indispensable tool for radio hobbyists and professionals aiming for enhanced audio quality and multi-band simultaneous listening.