Summary
This valve combined a low-mu triode with a remote cut-off pentode which could be used in a number of ways including as a tuned radio frequency amplifier followed by a triode detector or as a frequency changer with the triode as the local oscillator and the pentode as the mixer. 6.3 volt indirectly heated cathode.
Physical Description
Shouldered glass bulb with top cap and American small 7 pin base. White getter indicates that the vacuum has been lost. Mounted on display block with a sectioned example of the same type of valve.
More Information
-
Collection Names
-
Collecting Areas
-
Acquisition Information
Donation from J. C. Liddy, 05 Jul 1948
-
Manufacturer
Hygrade - Sylvania Corporation., Emporium, Pennsylvania, United States of America, 1939-1947
-
Inscriptions
Bulb: 6F7 Base: Hygrade/MADE IN U.S.A. Display block: Brief Description
-
Brand Names
-
Classification
-
Category
-
Discipline
-
Type of item
-
Overall Dimensions
115 mm (Length), 38 mm (Outside Diameter)
Not including display block.
-
Keywords