PMI Model No. TCDRO-12G-CD-1 is a Temperature Compensated Dielectric Resonator Oscillator with a center frequency of 12.0 GHz.  This model provides a minimum output power of +18 dBm with all spurs held to -60 dBc and harmonics held to -25 dBc.  The mechanical tuning frequency is ±10 MHz and the unit has a phase noise of -95 dBc/Hz.  The unit requires +15 VDC with a maximum current draw of 200 mA and is supplied with SMA female connectors in a housing that measures 1.80" x 1.00" x 0.50".  https://www.pmi-rf.com/product-details/tcdro-12g-cd-1