The DN-EP-4.8-738FE from Microlab is a RF Tapper with Frequency 694 to 2170/2300 to 3800 MHz, Coupling 4.8 dB, Insertion Loss 1.7 dB, Average power 300 W, Return Loss 17.6 dB. Tags: Module With Connectors. More details for DN-EP-4.8-738FE can be seen below.