The ETP-555-3800-04 from Excelwave is a RF Tapper with Frequency 555 MHz to 3.8 GHz, Coupling 6 dB, Insertion Loss 1 dB, Average power 200 W, Temperature -25 to 55 Degree C. Tags: Module with Connectors. More details for ETP-555-3800-04 can be seen below.