Microphone

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Ingenium, 1970.0034.001
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OBJECT TYPE
N/A
DATE
1950
ARTIFACT NUMBER
1970.0034.001
MANUFACTURER
B.B.C. Marconi
MODEL
L
LOCATION
Toronto, Ontario, Canada

More Information


General Information

Serial #
411434
Part Number
1
Total Parts
2
AKA
N/A
Patents
N/A
General Description
BRASS UPPER CASING & HANDLE; ALUMINUM RIBBON SUSPENDED IN MAGNETIC FIELD; PLASTIC COVERED MICROPHONE CORD

Dimensions

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

Length
38.0 cm
Width
29.4 cm
Height
16.0 cm
Thickness
N/A
Weight
N/A
Diameter
N/A
Volume
N/A

Lexicon

Group
Communications
Category
Radio
Sub-Category
N/A

Manufacturer

AKA
Marconi
Country
Canada
State/Province
Ontario
City
Toronto

Context

Country
Canada
State/Province
Unknown
Period
C.1950-1969
Canada
NONE
Function
TO PICK UP SOUND, VOICE & MUSIC AND CONVERT TO COMPLEX ALTERNATING CURRENT. THE ALTERNATING CURRENT WOULD BE EQUALISED AND AMPLIFIED TO MODULATE A BROADCAST TRANSMITTER.
Technical
THIS MICROPHONE ILLUSTRATES A VERY COMPLEX DESIGN FOR A SIMPLE CLOSE-TALKING MICROPHONE. IT IS INTENDED FOR ON-THE-SPOT NEWS REPORTING AND/OR INTERVIEWS. THE MICROPHONE UNIT IS SUPPORTED ON DAMPED SPRINGS TOABSORB VIBRATION AND PREVENT DAMAGE TO THE RIBBON. THE RIBBON IS POSITIONED BEHIND THE MAGNET STRUCTURE TO PREVENT EFFECTS OF DIRECT AIR PRESSURE THE EQUALISING UNIT (.2) CORRECTS FOR LOW FREQUENCY EMPHASIS WHEN A RIBBON MICROPHONE IS USED FOR CLOSE-TALKING.
Area Notes
Unknown

Details

Markings
'B.B.C.-MARCONI/ TYPE L/ PATT NO. 506668' INCISED IN HANDLE; 'INST. NO. 411434' INCISED IN OPPOSING SIDE/ 'CANNON ELECT DEV-CO LA CAL' INCISED IN CONNECTOR CASING; 'CANNON/ 2' INCISED ON PLUG
Missing
NONE
Finish
ANTIQUE BRASS ENAMEL FINISH
Decoration
N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

B.B.C. Marconi, Microphone, circa 1950, Artifact no. 1970.0034, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/1970.0034.001/

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