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Frequency Standards Laboratory


Jet Propulsion Laboratory, California Institute of Technology

The Frequency Standards Laboratory houses the National Aeronautics and Space Administration's (NASA) Lead Center for Frequency and Time. The Laboratory supplies NASA's Deep Space Network (DSN) with the hardware, expertise and technology for state-of-the-art frequency standards, clocks, distribution networks, and time synchronization to enable deep space navigation and advanced radio science experiments.

The Laboratory is home to two Groups at JPL.  For more information see:

and also:



The Frequency Standards Laboratory can be reached by e-mail, phone, FAX, or mail:

Nan Yu
Quantum Sciences & Technology Group
Jet Propulsion Laboratory 
M/S 298-100

4800 Oak Grove Drive 
Pasadena, CA 91109-8099
(818) 354-4093
FAX 818-393-6773
Robert Tjoelker
Frequency and Timing Advanced Development Group
Jet Propulsion Laboratory
M/S 298-100

4800 Oak Grove Drive 
Pasadena, CA 91109-8099
(818) 354-1873
FAX 818-393-6773


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