The TLBF-4G-400M-E from Talent Microwave Inc is a Band Pass Filter with Frequency 3800 to 4200 MHz, Bandwidth 400 MHz, Center Frequency 4000 MHz, Insertion Loss 0.8 to 1 dB, Upper Rejection 45dB@4000±800 MHz. Tags: Module with Connectors. More details for TLBF-4G-400M-E can be seen below.