The SPS-312 from Synergy Microwave Corporation is a Analog Phase Shifter with Frequency 306 to 318 MHz, Phase Shift 180 Degree, Insertion Loss 1.2 to 1.8 dB, Control Voltage 0 to 14 V, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount. More details for SPS-312 can be seen below.