OCXO provides ultra-low noise

The OXO series of ultra-low phase noise oven controlled crystal oscillators are currently available in 10 MHz, 100 MHz and 120 MHz output frequency in small C-08 package.  Also available is a 10 MHz surface-mount version. The high performance OCXOs have sine wave outputs with harmonics less than 30 dBc, and typical phase noise ranges from −100 dBc/Hz at 1 Hz to −170 dBc/Hz at 100 kHz for a 10-MHz part. 

These high performance crystal oscillators include electronic tuning port and have excellent frequency and long term stability for applications in test and measurement equipment, base stations portable transceivers, and RADAR.  SMA connectorized versions with single or multiple isolated outputs are also available. 

Synergy Microwave , www.synergymwave.com