The ST-03-411 from Pulsar Microwave is a Analog Phase Shifter with Frequency 28.5 to 31.5 MHz, Phase Shift 180 Degree, Insertion Loss 1.3 dB, Control Voltage 0 to 30 V, Power 5 dBm. Tags: Module with Connectors. More details for ST-03-411 can be seen below.