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ID = 67394
Tube type:  Solid State Tube Replacement   RF/IF-Stage 
Identical to TR1018
Similar Tubes
Multiple differences or of other kind:
  408A ; 6AK5
First Source (s)
Feb.1973 : - - Manufacturers Literature

Base Miniatur-7-Pin-Base B7G, USA 1940
Was used by Radio/TV-reception etc.
Filament Solid State

"Fetron", solid state replacement for 408A or 6AK5 tubes manufactured by Teledyne.

The "Fetron family" was designed for replace vacuum tubes in telephone communications equipments (carrier, multiplexer, demultiplexer etc.) or lab equipments (for example
HP 400 VTVM conversion kit, Tektronix CA plugin conversion kit).

A "Fetron" is not a universal replacement for vacuum tubesand must be configured differently for certain applications.
For example, the "Fetron" configuration will generally be different for a pentode amplifier and an oscillator.

The "Fetron" is composed of one or more high voltage JFETs, a protective fuse, and R/C networks for tailoring to the required circuit
performance parameters.

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
x 27 x 14 mm / x 1.06 x 0.55 inch
Information source
TR1018: H.Weigl
Helmut Weigl

More ...
TR1018: Manufacturers data
Patrice Zeissloff

TR1018: Manufacturers data
Patrice Zeissloff

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