The µFILTER SF-315 from NuWaves RF Solutions is a Band Pass Filter with Frequency 312.5 to 317.5 MHz, Bandwidth 5 MHz (3 dB Bandwidth), 10 MHz (20 dB Bandwidth), Center Frequency 315 MHz, Insertion Loss 1.7 to 2.5 dB, VSWR Input 1.75:1, 2.00:1. Tags: Module with Connectors. More details for µFILTER SF-315 can be seen below.