The DP2549K0603CT from Frontier Electronics is a Diplexer with Frequency f1 2.4 to 2.5 GHz, Frequency f2 4.9 to 5.9 GHz, Attenuation 10 to 18 dB, Attenuation f1 18 dB, Attenuation f2 10 to 20 dB. Tags: Surface Mount. More details for DP2549K0603CT can be seen below.