The 501-26705 from Quantic Wenzel (Wenzel Associates, Inc.) is a OCXO with Frequency 10 - 3500 MHz, Supply Voltage 15 V, Phase Noise -101 dBm/Hz@100 Hz to -84 dBm/Hz@10 Hz, Phase Noise 1 kHz -118 dBm/Hz, Phase Noise 10 kHz -137 dBm/Hz. Tags: Module with Connectors. More details for 501-26705 can be seen below.