The 501-24224 from Quantic Wenzel (Wenzel Associates, Inc.) is a OCXO with Frequency 25 MHz, Supply Voltage 15 V, Phase Noise -145 dBm/Hz@100 Hz to -118 dBm/Hz@10 Hz, Phase Noise 1 kHz -165 dBm/Hz, Phase Noise 10 kHz -172 dBm/Hz. Tags: Module with Connectors, Low G-Sensitivity. More details for 501-24224 can be seen below.