The 501-26792 from Quantic Wenzel (Wenzel Associates, Inc.) is a OCXO with Frequency 200 MHz, Supply Voltage 15 V, Phase Noise -123 dBm/Hz@100 Hz to -93 dBm/Hz@10 Hz, Phase Noise 1 kHz -151 dBm/Hz, Phase Noise 10 kHz -168 dBm/Hz. Tags: Module with Connectors, Low G-Sensitivity. More details for 501-26792 can be seen below.