Gm=1.2 at Va=200, Amplification factor 200. (Radio-Expres 1930). To avoid the Philips patent of the penthode, Tungsram and Radio-Record made tetrode's with a penthode characteristic, This is neither a screen grid tetrode, nor a penthode. See base diagram. Also made with B4 base with sidecontact.
Dimensions (l x h x p) incl.pins/tip
45 x 114 x 34 mm / 1.77 x 4.49 x 1.34 inch
Poids
40 g / 1.41 oz
Bibliographie
Taschenbuch zum Röhren-Codex 1948/49
Radio-Expres, Netherlands
- - Manufacturers Literature
M1004: Tabu Röhren-Codex, 1948
Anonyme 15 Collectionneur
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