The HV37T-8 from Spectrum Control is a Voltage Controlled Oscillator with Frequency 150 to 300 MHz, Power 25.119 mW, Tuning Voltage 0 to 20 V, Phase Noise -110 dBc/Hz, Supply Voltage 15 V. Tags: Surface Mount, Plug-In. More details for HV37T-8 can be seen below.