The 11SZ10-2000/X8000-O/O from K&L Microwave is a Diplexer with Frequency f1 1 to 1.9 GHz, Frequency f2 2.1 to 8 GHz, Insertion loss 1 to 3 dB, Insertion loss f1 1 dB, Insertion loss f2 3 dB. Tags: Module with Connectors, Lumped Component, Suspended Substrate. More details for 11SZ10-2000/X8000-O/O can be seen below.