The AR133A-03 from AccuBeat is a Time and Frequency Standard with Frequency 10 MHz, Frequency Stability ±0.3 ppb, Output Power 12 dBm, Phase Noise -159 to -110 dBc/Hz, Short Term Stability 0.012 to 0.03 ppb. Tags: Frequency Standard. More details for AR133A-03 can be seen below.