The BWHF-12G from Sainty-Tech Communications Limited is a RF High Pass Filter with Frequency 12 to 35 GHz, Insertion Loss 1.7 dB @12.0GHz, Power 30 dBm, Rejection 20 dB @8.3GHz, 40 dB @7.6GHz, Lower Rejection 20 to 40 dB. Tags: Die. More details for BWHF-12G can be seen below.