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ID = 21800
Brand: Werk für Fernmeldewesen (OSW, HF, WF) Berlin, VEB, RFT (Ostd.)
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to OSW2600 = 6AC7k = 2600_OSW = HF2600
Similar Tubes
Other shape (e.g. bulb type):
Other class quality (otherwise equal):
  6AC7 ; OSW2190
First Source (s)
1949 : -- Collector info (Sammler)

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 6.3 Volts / If 0.45 Ampere / Indirect / Specified voltage AC/DC
Description Low microphonic 
Text in other languages (may differ)

2190_6ac7_1.gif OSW2600: OSW-Datenblatt 2.50
Wolfgang Eckardt

More ...

Just Qvigstad
OSW2600: Werk für Fernmeldewesen Schöneweide
Egon Strampe

Usage in Models 1= 1948?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of

Collection of a member from D


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