TECHNICAL DESCRIPTION AND SERVICE INSTRUCTION FOR AIR LAUNCHED BALLISTIC RADIOSONDE K 55 - E.
GRAW (JOSEF) MESSGERAETE G M B H NURENBERG (WEST GERMANY)
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Radiosonde K 55 is an instrument used for meteorological measuring of the free atmosphere. An airplane flying in 50,000 feet altitude with high speed 500 kn launches a radiosonde every 110 miles approx. The radiosonde descends very fastly thus reaching the sea level before the next one is released. During the descent the radiosonde measures the meteorological values barometric pressure, relative humidity and atmospheric temperature same are transmitted as Morse code impulse values. These Morse code signals are received in the airplane and taken up by a wire record. After launching all radiosondes the airplane returns to the airfield ground station there the wire records are plaid off and evaluated. For quicker evaluation of the measurements the Morse code signals of the radiosonde may also be transmitted to the ground station by a high-powered relay transmitter. Author