XtalTQ
https://www.xtaltq.com/products/ultra-stable-ocxo.html
ltra Stable OCXO (Oven‑Controlled Crystal Oscillator) - ppb‑Level Precision for GPS, Telecom, and Scientific Instruments
An Ultra Stable OCXO (Oven‑Controlled Crystal Oscillator) gives engineers a frequency reference they can trust when timing accuracy is non‑negotiable. By regulating a quartz crystal inside a temperature‑controlled micro‑oven, an OCXO holds its operating point steady and delivers outstanding frequency stability-often down to parts per billion (ppb). That combination of tight stability, low phase noise, and long‑term reliability makes ultra stable OCXOs a go‑to solution for GPS timing, telecommunications synchronization, radar subsystems, precision instruments, and scientific measurement platforms.
If your system must stay locked, clean, and consistent across temperature swings and long operating cycles, an ultra stable oven oscillator can protect performance margins that standard oscillators simply cannot maintain.
What Is an Ultra Stable OCXO?
An OCXO places a crystal oscillator in a thermally insulated enclosure (the "oven") and actively controls the temperature-commonly around 85°C-to reduce frequency drift caused by ambient changes. Instead of chasing temperature fluctuations, the ultra stable oscillator operates in a stable thermal environment.