Antique radios, Old Time Radios
TT21
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Country:
Great Britain (UK)
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| Identical to |
TT21
= 7623
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| Similar
Tubes |
Heater different:
TT22
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| Base |
Octal (Int.Octal, IO) K8A, USA 1935
Top contact with a cap.
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| Filament |
Vf 6.3 Volts / If 1.6 Ampere / Indirect / Specified voltage AC/DC |
| Description |
Designed for use as RF amplifiers with full power rating up to 30MHz. Also useful as audio amplifiers and pulse modulators.
Pa <37.5W for commercial service or <45W for intermittent or amateur service.
Va<1250, Ik<230mA.
Typical Output Powers:
RF: 80W SSB class AB1;
for Audio in push-pull: 100 W (Push-Pull 43% tap,Ultra-Linear Connected).
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Dimensions (WHD)
incl. pins / tip |
52 x 131 x 52 mm / 2.05 x 5.16 x 2.05 inch |
TT21: Radio Communication Handbook
Antonio Rabitti
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TT21: GEC data sheet
Bruce Taylor
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Just Qvigstad
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3
Collection of
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