The AE1000B9903 from Anatech Electronics is a Band Pass Filter with Frequency 1 GHz, Center Frequency 1 GHz, Insertion Loss 1 dB, Upper Rejection 60 dB @ 1.41-10 GHz, Lower Rejection 60 dB @ 0-580 MHz. Tags: Surface Mount, Lumped Component Filter. More details for AE1000B9903 can be seen below.