The NGD1210C2R200G1TRF from NIC Components is a Diplexer with Frequency f1 900 to 2200 MHz, Frequency f2 900 to 2200 MHz, Attenuation 27 to 30 dB, Attenuation f1 27 to 30 dB, Attenuation f2 27 to 30 dB. Tags: Surface Mount, Ceramic. More details for NGD1210C2R200G1TRF can be seen below.