The QMP2-500-3550-1 from Qualwave is a Diplexer with Frequency f1 0.5 to 1.9 GHz, Frequency f2 1.9 to 3.55 GHz, Attenuation 50 dB, Attenuation f1 50@DC to 0.3GHz, [email protected] to 4.4GHz, Attenuation f2 50@DC to 1.6GHz, 50@4 to 8GHz. More details for QMP2-500-3550-1 can be seen below.