The TLBF-4G-30M-E from Talent Microwave Inc is a Band Pass Filter with Frequency 3970 to 4030 MHz, Bandwidth 60 MHz, Center Frequency 4000 MHz, Insertion Loss 2 dB, Upper Rejection 50dB @ 4000 +- 200 MHz. Tags: Module with Connectors. More details for TLBF-4G-30M-E can be seen below.