The E80-GPS from Quartzlock is a Time and Frequency Standard with Frequency 10 MHz, Stability over Temperature 0.3 ppb, 0.5 ppb, Output Power 8 dBm, Phase Noise -145 to -67 dBc/Hz, Short Term Stability 0.02 to 0.06 ppb. Tags: Rack Mount, Time & Frequency Standard. More details for E80-GPS can be seen below.