iii, 42 pages, 2 unnumbered folded leaves of plates : illustrations ; 24 cm
OCLC
ocn694569435
"30 November 1950"--T.p. verso.
"Radiosonde AN/AMT-2A is a balloon-carried meteorological instrument which is used to transmit automatically to a ground meteorological station information relating to the pressure, temperature, and humidity in the upper air ... The radiosonde transmits an f-m (frequency modulated) signal."--Introd.
Includes 2 folded plates containing illustrations.
Includes bibliographical references (pages 41-42).