The 1223B-S from ACST GmbH is a Frequency Synthesizer with Frequency 158 to 258 GHz, Output Power 4 to 11 dBm, Supply Voltage 5.5 to 19 V, VCO Voltage 5.5 to 19 V, Operating Temperature 5 to 35 Degree C. Tags: Waveguide. More details for 1223B-S can be seen below.