General Information

Serial #

5102

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

CARDBOARD CASING/ SYNTHETIC & METAL WORKING PARTS/CORD/ FABRIC STRAP/ HAIR HUMIDITY ELEMENT

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

22.0 cm

Width

11.0 cm

Height

22.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Meteorology

Category

Upper air pressure, temperature & humidity measurement

Sub-Category

N/A

Manufacturer

AKA

Unknown

Country

United States of America

State/Province

Unknown

City

Unknown

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

SINCE THE 1940'S, AMERICAN MADE AUDIO-MODULATED RADIOSONDES HAVE BEEN USED IN CANADIAN UPPER AIR OBSERVATIONS.

Function

DEVICE LIFTED BY BALLOON INTO UPPER ATMOSPHERE TO READ TEMPERATURE, HUMIDITY, & AIR PRESSURE & TRANSMIT DATA TO EARTH. WIND SPEED & DIRECTION CAN BE DETERMINED BY TRACKING RADIOSONDE.

Technical

IN AUDIO-MODULATED RADIOSONDES, SIGNALS CREATED BY THE METEOROLOGICAL SENSORS ARE CONVERTED INTO ELECTRICAL SIGNALS WHICH ARE THEN MODULATED & TRANSMITTED AS AUDIO FREQUENCY SIGNALS. THEAMERICAN FORM WAS DEVELOPED IN 1937 & 910074 HAS THE DOUBLE ANEROID BAROMETER, HAIR HYGROMETER, & ELECTROLYTIC TEMPERATURE SENSOR USUAL IN THIS EARLY VERSION.

Area Notes

Unknown

Details

Markings

BLUE PRINTING ON SIDES READING 'RADIOSONDE ML-141-A/ SERIAL NO. 5102 ORDER NO. 8347-WF-43/ THIS INSTRUMENT IS THE PROPERTY OF/ THE UNITED STATES ARMY/ IN THE INTEREST OF THE WAR EFFORT/ THE FINDER IS REQUESTED TO RETURN/ TO LOCAL POSTMASTER. NO REWARD PAID FOR ITS RETURN' WITH SPACES FOR FINDER'S NAME & ADDRESS ON ONE SIDE & ON OTHER SIDE ADDRESS FOR RETURN TO 'SIGNAL SUPPLY OFFICER/ DAYTON SIGNAL DEPOT/ 429 North Main Street/ DAYTON OHIO' FOR 'War Department/ Signal Corps U.S. Army/ Official Business'/ ON INSIDE FLAP IS LABELREADING 'SERIAL NO./ 5102', STAMPED 'MAY 21 1943' & 'SC5234A'/ HANDWRITTEN '6297' IN SEVERAL PLACES INSIDE CASING/ RED STAMPED '6297' ON CASING

Missing

From CA of 10/19/1993 by Tony Missio: Undetermined

Finish

WHITE CARDBOARD, NOW DISCOLOURED TO OFFWHITE/ ONCE WHITE CORD & STRAP, NOW SOILED TO BROWN/ MULTICOLOURED SYNTHETIC

Decoration

N/A