Quantic PMI Model BPF-275M-510M-TNCFF is a bandpass filter with a center frequency of 0.275 GHz; operates over the frequency range of 0.02 to 0.53 GHz. It has a maximum insertion loss of 1 dB and a maximum VSWR of 1.5:1. Package size is 1.58" x0.79" x0.79" with TNC female connectors.