The 6520 from Microchip Technology is a Space Qualified Oscillator with Frequency 300 MHz to 1.5 GHz, Output Power 3 to 5 dBm, Supply Voltage 3.3 / 5 / 12 V, Output Current 50 to 60 mA, Operating Temperature -40 to 85 Degree C. More details for 6520 can be seen below.