LBE-1421Low jitter GPS locked frequency clock source with 2 outputs with one as selectable PPS output. 1 Hz to 1. 4 GHz output This device outputs high purity signal with frequency locked to GPS. LBE 1421 is perfect for both accurate frequency calibration and RF reference use in mixers or multipliers. It has an additional output which can be programmed for different frequency outputs. Frequency stability of its output is defined by the accuracy of GPS