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ID = 46500
Brand: Tesla; Praha, Bratislava etc.
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Pentagrid-Converter (Heptode)   Frequency converter 
Identical to EP203 = 1H33

Base Miniatur-7-Pin-Base B7G, USA 1940
Filament Vf 1.4 Volts / If 0.025 Ampere / Direct / Battery =
Description Ua 90V, Ug3 -0.5V, Ug2+4 67.5V, Ug1 -0.5V, Ia 3.2 mA, Ig2+4 4 mA, Sg1/g2+g4 > 0.45 mA/V, Ri > 250 kOhm 
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7at_res_10.png EP203
Emilio Ciardiello

Just Qvigstad

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