Antique radios, Old Time Radios
S28A
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| Tube type: |
Triode, vacuum UHF |
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| Identical to |
S28A
= CV88
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| Predecessor Tubes |
S25A
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| Filament |
Vf 6.3 Volts / If 0.4 Ampere / Half indirect |
| Description |
UHF disk sealed triode, capable of operation up to 1GHz. Improved variant of S25A, was approved as CV88.
1941.
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
-- Original prospect or advert Callick, Metres to Microwaves
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