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76- First year: 1933
- Base: UY-Base, 5 Pins (U
- Filament: Vf 6.3 Volts / If:
- Identical to: = 276 = UY76 = UY-
- Tube type: Triode, vacuum U
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77- First year: 1933
- Base: 6-Pin-Base U6A, ol
- Filament: Vf 6.3 Volts / If:
- Identical to: = UZ-77 = 77E = A6
- Tube type: Vacuum Pentode U
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78- First year: 1933
- Base: 6-Pin-Base U6A, ol
- Filament: Vf 6.3 Volts / If:
- Identical to: = 78E = UZ-78 = U
- Tube type: Vacuum Pentode R
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79- First year: 1933
- Base: 6-Pin-Base U6A, ol
- Filament: Vf 6.3 Volts / If
- Identical to: 79 = PH79 = CV2545
- Tube type: Double Triode Po
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80- First year: 1927
- Base: UX-Base (4 Pins (2
- Filament: Vf 5 Volts / If: 2
- Identical to: 80 = R80_USA = C-2
- Tube type: Full-Wave Vacuum R
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82- First year: 1932
- Base: UX-Base (4 Pins (2
- Filament: Vf 2.5 Volts / If
- Identical to: 82 = 282 = PH282 =
- Tube type: Full-Wave Mercury-
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84- First year: 1933
- Base: UY-Base, 5 Pins (U
- Filament: Vf 6.3 Volts / If:
- Identical to: = 84/6Z4 = P864 =
- Tube type: Full-Wave Vacuum R
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85- First year: 1932
- Base: 6-Pin-Base U6A, ol
- Filament: Vf 6.3 Volts / If
- Identical to: 85 = PH85 = 285 =
- Tube type: Double Diode-Triod
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89- First year: 1932
- Base: 6-Pin-Base U6A, ol
- Filament: Vf 6.3 Volts / If
- Identical to: 89 = PH89 = VT-89
- Tube type: Vacuum Pentode P
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A225- First year: 1926
- Base: Europe 4-Pin (A, 4
- Filament: Vf 2 Volts / If: 0
- Identical to: = RE052
- Tube type: Triode, vacuum
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