The Meteorological Magazine

The Meteorological Magazine

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The two main American radic-sondes in use at the present time operate on carrier frequencies of 400 and 1, 685 Mc./sec. Audio-frequency modulation is controlled by varying the grid resistor of a blocking oscillator and lies within the range 3-200 c. ... can be in the form of a rotating single-turn helix (German, Indian ), flat spiral (Canadian), or radius arm (French and Swiss). ... Manual aerial control enables matching of elevation and azimuth signals on a cathode-ray tube, the appropriateanbsp;...

Title:The Meteorological Magazine
Publisher: - 1955

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