The DN-EP-3-738FE from Microlab is a RF Tapper with Frequency 694 to 2170/2300 to 3800 MHz, Coupling 3 dB, Insertion Loss 2.2 dB, Average power 300 W, Return Loss 17.6 dB. Tags: Module With Connectors. More details for DN-EP-3-738FE can be seen below.