The QT4200 from Q-Tech Corporation is a OCXO with Frequency 1 to 125 MHz, Supply Voltage 5, 12 or 15 V, Output Power 0 dBm, Phase Noise 100 kHz -160 dBc/Hz, Frequency Stability ±10 to ±200 ppb. Tags: Module with Connectors. More details for QT4200 can be seen below.