The Unit Crystal Oscillatora Simplified Frequency Standard For The Small Laboratory

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A 1-Megacycle Sheb-

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Radio Engineering

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• LATEST ADDITION to the rapidly growing line of General Radio Unit Instruments is the Type 1213-A Unit Crystal Oscillator. Like other unit instruments/ this new oscillator is a miniaturized and greatly simplified version of a highly accurate laboratory instrument. The Unit Crystal Oscillator makes available, at low cost, harmonics of one megacycle, 100 kilocycles, and 10 kilocycles, with output frequencies as high as 1,000 megacycles, and with a short period stability of approximately one part per million (0.0001%).

Every electronics laboratory, particularly one concerned with electrical communication systems, needs a means of standardizing and measuring frequency. In the large, well-endowed laboratory, where standard frequencies are in continuous use, and where accuracies approaching one part in 108 are required, the Type 1100 Primary and Secondary Frequency Standards are used. This equipment, with facilities for distributing standard frequencies throughout the laboratory building, is too expensive for the laboratory with a limited budg et, and for perimenter.

the individual ex-

i Eduard Kar plus, "V-H-F and TT-H-F I'nit Oscillators," General Radio Experimenter, Mav,

1950.

"New T'nit Instruments, Power Supplies — Modulator," General Radio Experimenter, July,

1951.

i Eduard Kar plus, "V-H-F and TT-H-F I'nit Oscillators," General Radio Experimenter, Mav,

1950.

"New T'nit Instruments, Power Supplies — Modulator," General Radio Experimenter, July,

1951.

Booths 92-93 General Radio Co.

Booths 92-93 General Radio Co.

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