The AE125H9779 from Anatech Electronics is a RF High Pass Filter with Frequency 125 MHz to 1 GHz, Insertion Loss 0.5 dB, Power 100 W, Rejection 30 dB@0-100 MHz, Return Loss 15 dB. Tags: Module with Connectors, Lumped Component Filter. More details for AE125H9779 can be seen below.