INVESTIGATION OF 1551B SPIKE NOISE.
Interim rept. no. 1,
HARRY DIAMOND LABS WASHINGTON D C
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Tests were made to determine the dependence of the occurrence of noise in the 1551B tube on physical shock. The tube was exposed to 3000-g shock produced by air gun firings into a lead target. Controlled tests did not indicate any tendency for noise to occur subsequent to firing. Noise pulses from an undetermined source were occasionally observed, however. Several different types of noise train were observed, and spectral analysis disclosed that their frequency components appeared to lie below 2000cps. Author