Antique radios, Old Time Radios

4101D

ID = 28977

Country:

Great Britain (UK)

Brand:	Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:	Triode, vacuum Power/Output

Identical to

4101D = VT31_GPO = CV1638 = SY4101D = 208A = 101DW = 208A_Wecoltd = 101D_Wecoltd = R208-A

Similar Tubes

Normally replaceable-slightly different:

101D ; 101DW_Wecoltd ; 4101DL

Heater different:

4019A

Base	UV-Base (4 Pins+Bayonet, USA 1914 WE)
Filament	Vf 4 Volts / If 1 Ampere / Direct
Description	Tyne, p 369 quotes the filament current as 0.25A. Used principally for telephony amplification by British Post Office.
Tube prices	3 Tube prices (visible for members only)
Information source	Saga of the Vacuum Tube, Tyne page 367-369

4101D: collection EP
Eduard Pavlik

4101D: ARRL Handbook 1972
Michael Schlör

4101D: own collection
Peter den Boer

from Just Qvigstad

Collection of Eduard Pavlik (SK)

Collection of Alexander Hofer (A)

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