The TBF-4500-20-C5 from Talent Microwave Inc is a Band Pass Filter with Frequency 4.49 to 4.51 GHz, Bandwidth 20 MHz, Center Frequency 4500 MHz, Insertion Loss 5 dB, Rejection 50 dB. Tags: Module with Connectors, Cavity Filter. More details for TBF-4500-20-C5 can be seen below.