The DP2549E0805BT from Frontier Electronics is a Diplexer with Frequency f1 2.4 to 2.5 GHz, Frequency f2 4.9 to 5.9 GHz, Attenuation -20 dB, Attenuation f1 -20 dB, Attenuation f2 -20 dB. Tags: Surface Mount. More details for DP2549E0805BT can be seen below.