Antique radios, Old Time Radios
Transmitting-Tetrode
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Country:
Netherlands
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| Identical to |
Transmitting-Tetrode
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| Base |
Edison big E27 = 27 mm
Base on each end.
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| Was used by |
Transmittertube (Radio) |
| Filament |
Direct |
| Description |
This experimental tube is used in the Heussen broadcast station PCUU, which operated from april 1922 until september 1924. This tube is likely used during experiments in 1922 to find out how far one could be received with only 2,5 Watts of plate dissipation.
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Dimensions (WHD)
incl. pins / tip |
29 x 149 x 29 mm / 1.14 x 5.87 x 1.14 inch |
| Weight |
102 g / 3.60 oz |
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Just Qvigstad
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Collection of
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