The HFE-6875-1250 from ESJ Technology is a RF High Pass Filter with Frequency 6.12 to 7.5 GHz, Insertion Loss 2.5 dB, Rejection 80 dB, Lower Rejection 80 dB@DC to 5.875 GHz, VSWR 1.30:1. Tags: Module with Connectors. More details for HFE-6875-1250 can be seen below.