Antique radios, Old Time Radios
PV4_Ediswan
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Country:
Great Britain (UK)
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| Identical to |
PV4_Ediswan
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| Similar
Tubes |
Normally replaceable-slightly different:
A409
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| First Source
(s) |
1926 : History of the British Radio Valve to 1940 p. 158
Aug.1930 : Philips Bulletin R1164, p. 30
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