30 MHz - Low Pass Filter REV1 Key benefits Improves medium- and shortwave reception by passing signals below 30 MHz while attenuating higher-frequency interference. This reduces front-end overload and helps produce clearer audio and more stable demodulation. Protects your receiver from strong out-of-band signals and spurious emissions that can cause desensitization or intermodulation. Built from high-quality materials for reliable, consistent performance and long-term durability in typical receiving setups. What it does Function: 30 MHz low-pass filter (REV1) — designed to pass MW/SW/HF signals and block frequencies above 30 MHz. Intended use: supports receiving medium wave and shortwave signals by cleaning the RF input to your receiver or SDR before amplification or processing. Compatibility and practical attributes Works with medium- and shortwave receivers, SDRs, amateur radio equipment, and other HF receiving systems that require out-of-band rejection above 30 MHz. Constructed from high-quality materials to maintain stable filtering characteristics and withstand regular use. Compact and straightforward to integrate inline between antenna and receiver (verify connector type and installation requirements for your equipment). Use scenarios Shortwave listening in urban areas: add the filter between antenna and receiver to reduce local FM/VHF interference and improve signal clarity for broadcast stations. Amateur radio HF monitoring: use the filter to prevent VHF/UHF signals from mixing into HF bands and creating false signals or receiver overload. Portable or field receiving setups: inline filtering helps protect sensitive front ends and maintain consistent performance when using wideband antennas. Specifications Type: Low-pass filter Cutoff: 30 MHz Model: REV1 Constructed from: high-quality materials (as supplied) Installation note Confirm connector compatibility and mounting method with your receiver or antenna system prior to installation.