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ID = 47974
Brand: Tesla; Praha, Bratislava etc.
Tube type:  Transistor   Power/Output 
Identical to GC520K = GC520
Similar Tubes
Normally replaceable-slightly different:

Base Wires
Description NPN germanium transistor intended as driver / AF low power amplifier / switch.

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
7 x 15 x 7 mm / 0.28 x 0.59 x 0.28 inch
Weight 2 g / 0.07 oz
Information source

to1_k_tvt73_23.gif GC520K: TVT 73
Günther Stabe † 19.8.20

GC520K: electronica 129
Egon Strampe

Usage in Models 1= 1970 ; 1= 1971 ; 1= 1972 ; 1= 1974?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):4

Collection of



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