This filter provides a 1 dB bandwidth of 45 MHz with a defined cutoff characteristic, delivering precise frequency selectivity around the target band. Key benefits Targeted selectivity: 1 dB bandwidth of 45 MHz with a clear cutoff, helping to pass desired signals while attenuating adjacent . Antiinterference shielding: aluminum alloy shielded shell reduces interference and suppresses outofband spurious responses. Compact and sturdy: shielded housing is compact, durable, and easy to integrate into test setups. Optimized for 725 MHz systems: dedicated to improving performance of 725 MHz receiving equipment. RF testing readiness: suitable for RF testing in the 703–748 MHz frequency range. Main features Bandwidth: 1 dB bandwidth 45 MHz with cutoff characteristics for defined attenuation outside the passband. Housing: aluminum alloy shielded shell for antiinterference performance. Durability and usability: compact, sturdy design that is easy to use in various environments. Application focus: specifically optimized for 725 MHz receiving equipment. Testing range: applicable for RF testing in the 703–748 MHz range. Use scenarios Lab development and testing: use in a benchtop RF test setup to characterize a 725 MHz receiver chain, isolating the desired signal and reducing leakage from adjacent bands. Field equipment evaluation: verify filter performance in portable or fielddeployed systems operating near 725 MHz, ensuring clean signal reception and reliable measurements. System debugging and qualification: employ during RF system debugging to confirm that signals within 703–748 MHz pass with minimal outofband interference, aiding quick identification of issue sources.