The QPO-18223456-S-S2 from Communication Components Inc is a Quadplexer with Attenuation 50 dB, Frequency 1710 to 2700 MHz, Frequency1 1710 to 1880 MHz, Frequency2 1920 to 2180 MHz, Frequency3 2300 to 2400 MHz. Tags: Module With Connectors. More details for QPO-18223456-S-S2 can be seen below.