Key benefits Bandpass filter tuned for 403 MHz provides selective filtering to filter out interfering frequencies, effectively isolating and enhancing signal transmission Designed for a variety of applications to improve communications and signal processing; ideal for amateur and professional applications Built to withstand harsh use environments, enabling reliable operation in demanding settings No external power supply required; passive operation maintains signal integrity and is efficient and environmentally friendly Use scenarios Amateur radio stations operating in the 403 MHz band where clean, interference signals improve communication clarity and link reliability Professional RF test and measurement setups at 403 MHz requiring effective attenuation of unwanted frequencies to isolate the signal under test Remote telemetry or control systems in harsh environments where robust 403 MHz signal integrity is critical and external power is limited or unavailable