The 1218B-S from ACST GmbH is a Frequency Synthesizer with Frequency 330 to 500 GHz, Output Power -10 to 2 dBm, Supply Voltage 6 to 18.5 V, VCO Voltage 6 to 18.5 V, Operating Temperature 5 to 35 Degree C. Tags: Waveguide. More details for 1218B-S can be seen below.