In summary, Kaga Electronics/Furuno Electric's GF-87 series outputs 1PPS synchronized with UTC as well as 10MHz coherent to 1PPS. It can receive concurrent GPS, GLONASS, QZSS (Quasi-Zenith Satellite System) and SBAS signals. The GF-87 is suitable for various applications, thanks to small packaging. For example, radio communications, network communications and Grandmaster clock applications for multimedia broadcast, but also as an atomic oscillator replacement.