ABLNO Crystal Oscillators Abracon ABLNO Crystal Oscillators are ultra-low phase noise, voltage-controlled crystal oscillators that contain high Q, 3rd overtone crystal technology. These XOs / VCXOs feature 162dBc/Hz typical phase noise @ 10kHz offset, 100MHz carrier. The available frequency range is from 80MHz to 156.25MHz. Abracon ABLNO Crystal Oscillators are ideally suited for satellite modem communication systems, COTS - military communications, avionics, low-phase noise signal sources, high-definition TVs, test and measurement, and ultra-low jitter RF communication circuitry applications.