AMRAD type D-1 medium wave coupler
Date1921
Inventory NumberRS0751
ClassificationCoupler
Maker
American Radio and Research Corporation
1915 - 1928
User
Cruft Laboratory, Harvard University
founded 1914
Place of OriginMedford Hillside, 57, MA, United States
Dimensionsbox: 15 x 15 x 21 cm, 2 lb. (5 7/8 x 5 7/8 x 8 1/4 in., 0.9 kg)
DescriptionMedum Wave Coupler #2333 in original packing box. AMRAD, (American Radio and Research Corp) Medford Hillside, 57, Mass. - New York District Office, 21 Park Row. Chicago District Office, 608 S. Dearborn St. (General Radio-Cruft)
In Collection(s)
Signedplated on front panel, top center: AMRAD / COUPLER MED. WAVE TYPE D-1. / American Radio and Research Corporation / New York, N.Y. Medford HIllside, Mass.
Historical AttributesCruft
American Radio and Research Corporation
Date: 1921
Object number: RS0750
American Radio and Research Corporation
Date: 1921
Object number: RS0757
American Radio and Research Corporation
Accessories: 4 screws.
Object number: RS0753
American Radio and Research Corporation
Date: circa 1922
Object number: RS0755
American Radio and Research Corporation
Date: circa 1921
Object number: 1998-1-0884
American Radio and Research Corporation
Date: circa 1922
Object number: RS0745
American Radio and Research Corporation
Date: 1921
Object number: RS0746
American Radio and Research Corporation
Date: 1922
Object number: RS0754
American Radio and Research Corporation
Date: 1921
Object number: RS0752
American Radio and Research Corporation
Date: 1922
Object number: RS0756
Date: late 19th-early 20th Century
Object number: RS0168
Date: 1910-1940
Accessories: Diagram
Object number: RS0515