The AGBPF195 from AmpliTech, Inc. is a Band Pass Filter with Frequency 17.7 to 21.2 GHz, Bandwidth 3.5 GHz, Center Frequency 19.5 GHz, Insertion Loss 1.45 to 1.60 dB, Upper Rejection 20 dB @24.8 GHz. Tags: Die. More details for AGBPF195 can be seen below.