Vacuum tube
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1994.0269.001
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- OBJECT TYPE
- LOW POWER AMPLIFIER
- DATE
- 1927
- ARTIFACT NUMBER
- 1994.0269.001
- MANUFACTURER
- Cunningham, E.J. Inc.
- MODEL
- CX350
- LOCATION
- New York, New York, United States of America
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- TUBE: GLASS; SYNTHETIC; METAL/ CARTON: CARDSTOCK
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 15.0 cm
- Width
- 6.0 cm
- Height
- N/A
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Vacuum Tubes
- Category
- Telephone
- Sub-Category
- N/A
Manufacturer
- AKA
- Cunningham
- Country
- United States of America
- State/Province
- New York
- City
- New York
Context
- Country
- North America
- State/Province
- Unknown
- Period
- 1930'S
- Canada
-
Unknown - Function
-
USED AS A POWER AMPLIFIER, AUDIO, FOR USE AS A MODULATION/AMPLIFIER IN LOW POWER RADIOTELEPHONE TRANSMITTERS. - Technical
-
TYPE SAMPLE OF EARLY TUBE. IT IS EQUIVALENT TO THE UX250 - CUNNINGHAM USED 300 SERIES TO IDENTIFY THEIR TUBES - Area Notes
-
Unknown
Details
- Markings
- TUBE: ON BULB TOP: 'C [LOGO]'/ HOT BRANDED IN BASE: 'C [LOGO]/ CUNNINGHAM/ CX 350'/ PRINTING ON CARTON INCUDES: 'TYPE/ CX-350/ CUNNINGHAM/ AMPLIFIER/ TUBE/ Cunningham/ REG. U.S. PAT.OFF./ RADIO TUBES/ Since 1915/ Standard for All Sets/ TYPE CX-350/ POWER/ AMPLIFIER/ FIL. VOLTS 7.5/ FIL. AMP. 1.25/ PLATE VOLTS 450/ (MAXIMUM)/ E.J. Cunningham/ INC./ NEW YORK CHICAGO/ SAN FRANCISCO/ NOTICE [excl.point]/ LICENSED/ ONLY TO/ EXTENT/ INDICATED/ ON THE/ ENCLOSED/ INSTRUCTION/ SHEET/ MANUFACTURED/ AND SOLD UNDER/ RIGHTS, PATENTS/ AND INVENTIONS/ OWNED AND/OR/ CONTROLLED BY/ RADIO/ CORPORATION/ OF AMERICA'
- Missing
- N/A
- Finish
- TUBE: UNCOLOURED GLASS; BLACK SHELL/ CARTON: BLUE, ORANGE & WHITE
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Cunningham, E.J. Inc., Vacuum tube, after 1927, Artifact no. 1994.0269, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1994.0269.001/
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