The AGBPF063 from AmpliTech, Inc. is a Band Pass Filter with Frequency 3.6 to 9 GHz, Bandwidth 5.4 GHz, Center Frequency 6.3 GHz, Insertion Loss 0.57 to 0.85 dB, Upper Rejection 20 to 40 dB @16.8 to 34.1 GHz. Tags: Die. More details for AGBPF063 can be seen below.