Space-Grade Crystal Oscillators and Frequency References

Bliley Technologies is a US manufacturer of quartz crystal frequency control products for space, defense, and telecommunications applications. Founded in 1930 and headquartered in Erie, Pennsylvania, Bliley produces radiation-tolerant and radiation-hardened oscillators specifically engineered to maintain frequency stability in the harsh space environment where temperature extremes, radiation, and vibration would degrade conventional components.

Bliley’s space product line includes OCXO (oven-controlled crystal oscillators), TCXO (temperature-compensated crystal oscillators), VCXO (voltage-controlled crystal oscillators), and SAW (surface acoustic wave) oscillators at frequencies from 1 MHz to several GHz. Space-grade units undergo extended burn-in, frequency aging characterization, screening to MIL-PRF-55310, and radiation testing (total ionizing dose, single event effects). Temperature stability of ±0.05 ppb/°C or better over the operating range is achievable in OCXO configurations.

In satellites, ultra-stable frequency references underpin the clock systems needed for precision navigation (GPS and GNSS), coherent radar and SAR processing, time-division multiple access (TDMA) communication protocols, and scientific measurements. Bliley’s products serve satellite bus manufacturers, payload integrators, and US government satellite programs directly. The company holds ITAR export licenses and maintains a DMEA-certified trusted foundry status.