The 11SZ10-120000 from K&L Microwave is a Diplexer with Frequency f1 DC to 11.6 GHz, Frequency f2 12.6 to 18 GHz, Power 15 W, Frequency DC to 11.6 GHz / 12.6 to 18 GHz, Operating Temperature -55 to 85 Degree C. Tags: Module with Connectors, Suspended Substrate. More details for 11SZ10-120000 can be seen below.