Illustrated note on National Bureau of Standards air launched weather station transmitter which automatically reports temperature, barometric pressure, and humidity; operating in 5-Mc region, 5-watt battery operated transmitter has reliable range of over 100 mi, and operates at 3-hr intervals for more than 15 days; device is carried aloft in bomb rack of aircraft and is dropped by parachute. (see also Flight v 60 n 2218 July 27 1951 p 112)
NBS grasshopper
FM-TV
FM-TV ; 11 , n 7
1951
Article (Journal)
English
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Engineering Index Backfile | 1962
Engineering Index Backfile | 1951
Emerald Group Publishing | 1962
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