10 MHz OCXO based constanttemperature oscillator with ultralow phase noise, low noise, portable and reliable. Constant temperature operation: uses a constant temperature bath to keep the crystal oscillator at a stable temperature, minimizing output frequency drift caused by ambient temperature changes. This design delivers higher accuracy, up to ±0.01 Hz. components and precision process: built with electronic parts and a careful manufacturing process to ensure fine durability and long service life. 10 MHz frequency standard: provided by an OCXO ovencontrolled crystal oscillator, delivering a stable and reliable reference. Key benefits: establishes a precise and stable 10 MHz reference for timing and frequency applications; improves measurement accuracy and repeatability; reduces drift in environments with temperature variation; portable for field or desktop use; robust build for longterm use. Compatibility and performance: suitable as a stability reference clock for instrumentation, test benches, RF/microwave measurement setups, and timing systems that depend on a reliable 10 MHz standard. Use scenarios: Laboratory RF/microwave testing and calibration where a stable 10 MHz reference improves measurement accuracy. Telecommunication equipment timing and network synchronization to ensure consistent timing signals across devices. Development and calibration of timing devices, reference clocks, and precision instruments that require a reliable 10 MHz reference.