Rubidium Frequency Reference Cell Collection Nice Show Of Historical Progression

US $578

  • Lompoc, California, United States
  • Feb 22nd
 Consist of 9 reference cells and one filter cell (not shown). Shows the progression from the first commercial Rubidium standard (Varian 4700) to the later miniaturized versions like the FE5680A. From Varian 4700 and R-20, HP 5065A, Tracor (General Technologies 304B or D), Efratom FRK and FRS, SRS PRS10, EG&G RFS-10, and Frequency Electronics FE5680A. Makes a nice display. You can see more PIX and details at: http://www.leapsecond.com/pages/rb-cells/

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