The HV37T-7 from Spectrum Control is a Voltage Controlled Oscillator with Frequency 300 to 600 MHz, Power 15.849 mW, Tuning Voltage 0 to 25 V, Phase Noise -110 dBc/Hz, Supply Voltage 15 V. Tags: Surface Mount, Plug-In. More details for HV37T-7 can be seen below.