Summary
Two Output triodes. Manufacturer: RCA Radiotron Co., Harrison, NJ, USA.
Triode 1: primarily intended for use in early AC mains operated equipment. Originally released as UX-171-A, abbreviated to 71A circa 1932. 5.0 volt directly heated cathode.
Triode 2: originally numbered UX171A. The first small power tube marketed by RCA. 5 V directly heated cathode.
Physical Description
Shouldered glass bulb with American style 4 pin (UX) Bakelite base.. Shouldered bulb with 4 pin UX style base. Both mounted on display block.
More Information
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Acquisition Information
Donation from Mr S. A. Pick, 26 Nov 1945
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Manufacturer
RCA Radiotron Co., Harrison, New Jersey, United States of America, 1935
Manufacturer: -
Inscriptions
Bulb: 71A Base: RCA(logo) / Cunningham / Radiotron / F5 Bulb: 71A/U.S.A. Base: (RCA logo)/Cunningham/Radiotron Display block: Brief Description
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Classification
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Type of item
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Overall Dimensions
114 mm (Length), 44 mm (Outside Diameter)
Each valve (not including display block)
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