Summary
Sharp cut-off pentode, used as an RF and audio amplifier, autodyne frequency changer and anode-bend detector in radios. 2.5 volt directly heated cathode.
Physical Description
Shouldered glass bulb with top cap and American style 6 pin base, mounted on display block.
More Information
-
Collection Names
-
Collecting Areas
-
Acquisition Information
Donation from Arthur J. Veall Pty Ltd, 15 Feb 1943
-
Manufacturer
Champion Radio Works, Danvers, Massachusetts, United States of America, 1933-1940
-
Inscriptions
Bulb: 57/MADE IN U.S.A. Base: Champion On display block: Brief description of the valve
-
Brand Names
-
Classification
-
Category
-
Discipline
-
Type of item
-
Overall Dimensions
123 mm (Length), 38 mm (Outside Diameter)
Not including display block.
-
Keywords