WE type CW938A radio transmitter-receiver
Date: circa 1918
Inventory Number: RS0207
Classification: Radio Transmitter-Receiver
Subject:
Maker: Western Electric Company (1881 - 1995)
User: Cruft Laboratory, Harvard University (founded 1914)
Cultural Region:
Place of Origin:
Dimensions:
46.5 x 62 x 16 cm (18 5/16 x 24 7/16 x 6 5/16 in.)
Description:
A Western Electric type CW938A (1918) transmitter-receiver with metal front and bakelite knobs as well as brass and glass fixtures.
In Collection(s)
Signedplate on front panel, right side top: TRANSMITTER RECEIVER / MADE BY / WESTERN ELECTRIC CO., INC. / TYPE CW 938 A
Inscribedplate on front panel, right side middle: TYPE CW 936 A / SHORT RANGE RADIO TELEPHONE SET FOR 30 VOLTS DC SUPPLY / CONSISTING OF / TRANSMITTER RECEIVER CW 938 A TRANS VACUUM TUBES CW 1162 / AMPLIFIER CW 926 B (OR CW 931) / DYNAMOTOR SYSTEM CW 927A REC. VACUUM TUBES CW 933 / SWITCHBOARD CW 928 ANTENNA SWITCH CW 969 / LOUDSPEAKING TELEPHONE CW 929 EXTENSION BOX CW 1052A / HAND SET CW 930 PUSH BUTTON CW 1054 / TELEPHONE TRANS CW 1053 HEAD SET CW 834 / RANGE 254 M TO 600 M / SERIAL NO. 2009 REQ. NO. 1216_IS NSA CONT NO 35316 DATE 1918
plate on front panel, right side bottom: PATENTED IN USA / DEC. 2 1902 FEN 16 1908 / RE: AUG 4 1903 JUNE 6 1911 / REl AUG 25 1903 MAR 2 1915 2 PATS / AUG 16 1904 4 PATS JULY 14 1914 / OCT 31 1905 2 PATS FEB 18 1916 / FEB 27 1906 OCT 17 1916 2 PATS / APR 17 1906 2 PATS MAR 6 1917 / MAY 8 1906 JULY 17 3 1917 / JULY 31 1906 RE: OCT 23 1917 / NOV 13 1906 / PATENTS APPLIED FOR
on face of meter on right: WESTINGHOUSE / MILLI AMPERES / NAVY TYPE * CAY 1436
on face of meter in middle: WESTINGHOUSE / RADIO-FREQUENCY / AMPERES / NAVY TYPE * CAY 1434
on face of meter on left: WESTINGHOUSE / AMPERES / NAVY TYPE * CAY 1435
plate on front panel, right side bottom: PATENTED IN USA / DEC. 2 1902 FEN 16 1908 / RE: AUG 4 1903 JUNE 6 1911 / REl AUG 25 1903 MAR 2 1915 2 PATS / AUG 16 1904 4 PATS JULY 14 1914 / OCT 31 1905 2 PATS FEB 18 1916 / FEB 27 1906 OCT 17 1916 2 PATS / APR 17 1906 2 PATS MAR 6 1917 / MAY 8 1906 JULY 17 3 1917 / JULY 31 1906 RE: OCT 23 1917 / NOV 13 1906 / PATENTS APPLIED FOR
on face of meter on right: WESTINGHOUSE / MILLI AMPERES / NAVY TYPE * CAY 1436
on face of meter in middle: WESTINGHOUSE / RADIO-FREQUENCY / AMPERES / NAVY TYPE * CAY 1434
on face of meter on left: WESTINGHOUSE / AMPERES / NAVY TYPE * CAY 1435
FunctionPossible function: The first satisfactory vacuum tube transmitter used in the Navy was the Western Electric Co. CW 938, a component of the CW 936 short range radio telephone equipment.
http://earlyradiohistory.us/1963hwm.htm
http://earlyradiohistory.us/1963hwm.htm