The VS-401 from Vectron International is a Voltage Controlled SAW Oscillator with Frequency 1300 to 2500 MHz, Output Power 7 to 12 dBm, Phase noise -155 to -92 dBc/Hz, Supply Voltage 3.13 to 5.25 V, Control Voltage 0.5 to 4.5 V. More details for VS-401 can be seen below.