The AE4H9788 from Anatech Electronics is a RF High Pass Filter with Frequency 4 to 18 MHz, Insertion Loss 0.5 dB, Rejection 51 [email protected] MHz, Return Loss 15 dB, Operating_Temperature -25 to 70 Degree C. Tags: Module with Connectors, Lumped Component Filter. More details for AE4H9788 can be seen below.