- Purpose and benefit This filter suppresses broadcast FM interference quickly, improving receiver performance in crowded FM environments. - How it works It provides strong attenuation across the broadcast FM band, helping to prevent FM signals from overlapping or dominating other frequencies. - Key performance Attenuation of 50 dB or more across the 88-108 MHz range. - Compatibility and usage Designed for use with R receivers to reduce FM overload and improve overall frequency response in strong FM areas. - What to expect on spectrum If spectrum displays show BCFM radio signals or rising WFM interference on adjacent frequencies, this filter is intended to mitigate that interference. - Size and materials Size and construction vary by model; please refer to the product specification for exact dimensions and materials. - Practical use scenarios 1) In a receiving setup located in an area with strong broadcast FM signals to prevent front-end overload and improve band performance. 2) In spectrum monitoring or SDR work where FM bleed-through can obscure target signals, to achieve cleaner results. 3) In field RF experiments or deployments where FM interference reduces the quality of activity on other frequency bands. - Summary The broadcast FM band stop filter provides substantial attenuation in the 88-108 MHz range, supports improved performance for R receivers in FM-rich environments, and offers practical benefits in testing, monitoring, and field use.