Antique radios, Old Time Radios
4F1-TR
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Country:
Italy
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| Identical to |
4F1-TR
= 7D21
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| Filament |
Vf 6.3 Volts / If 30 Ampere / Direct |
| Description |
Forced air cooled transmitting tetrode, capable of 1200W anode dissipation. Thoriated tungsten cathode. Can be used full ratings up to 110MHz.
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| Weight |
1700 g / 59.97 oz |
| Information source |
- - Manufacturers Literature
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4F1-TR: Manufacturer's Literature
Emilio Ciardiello
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