Profile: Spectra Dynamics, Inc. specializes in time and frequency distribution systems. We provide the low noise electronics needed to support atomic time and frequency standards. We develop novel frequency synthesis architectures, and time & frequency measurement methods. Our main product lines are time and frequency distribution, low noise frequency synthesizers and references, and noise measurement systems. We also provide distribution amplifier, pulse distribution amplifier, power amplifier, variable gain amplifier, and clock signal distribution amplifier. We also offer custom-engineered solutions.