The VHF ONYX IV from Wenzel is a series of small, light-weight and rugged Oven Controlled Crystal Oscillator (OCXO) that operate from 25 to 160 MHz. This series has a phase noise of less than -176 dBc/Hz and low G-Sensitivity of less than 2E-10/g per axis. The oscillators have an internal voltage regulator for power supply line rejection and are available in a nickel-plated steel package that measures 1"×1"×0.5". These are designed for commercial and military applications.