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Accession Number:
AD1155979
Title:
Report on Ultra-Violet Signalling Equipment, Tests of January 1938
Report Date:
1938-08-12
Abstract:
Ultra-violet transmitters were made of the General Electric Company Type H-3 high pressure, high intensity, mercury lamp screened by an ultra-violet filter of Corning "Violet Ultra" black glass. The transmitted radiation was almost entirely the mercury 366 uu ultra-violet line. The ultra-violet receivers were fluorescent telescopes. Tests of the equipment at night between a destroyer and a submarine showed that the range with the ultra-violet telescope was about 4800 yards and with ordinary binoculars about 3200 yards. It was concluded that the ratio of the ultra-violet telescope range to binocular range was too small to give desired security and therefore that the equipment was not suitable for Service application.
Document Type:
Conference:
Journal:
Pages:
9
File Size:
2.18MB
Contracts:
Grants:
Distribution Statement:
Approved For Public Release
