The DPX205850DT-4052B2 from TDK is a Diplexer with Frequency f1 704 MHz to 1.578 GHz, Frequency f2 2.4 to 5.85 GHz, Attenuation 9 to 30 dB, Attenuation f1 12 to 30 dB, Attenuation f2 9 to 29 dB. Tags: Surface Mount. More details for DPX205850DT-4052B2 can be seen below.