The AE258B9875 from Anatech Electronics is a Band Pass Filter with Frequency 243 to 270.5 MHz, Bandwidth 27.5 MHz, Center Frequency 258 MHz, Insertion Loss 2 dB, Upper Rejection 45 dB 320 to 1100 MHz. Tags: Surface Mount, Lumped Component Filter. More details for AE258B9875 can be seen below.