Bree Engineering model number 800524 is a 7 section high Q filter at 1.7 GHz. Its 18 MHz bandwidth has less than 1.5 dBa of insertion loss and a VSWR of less than 1.5:1.0. The passband flatness is less than 0.4 dBc. Selectivity is greater than 60dBc at 40 MHz away from center frequency on both band edges. Size is 5.85 x 1.50 x 1.0 inches.