Antique radios, Old Time Radios
PT7
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Country:
Great Britain (UK)
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| Identical to |
PT7
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| Base |
British-7-Pin, old (M7A)
Top contact with a cap.
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 2 Volts / Direct |
| Description |
This tube is a small 3 watt transmitting type designed for use as the oscillator or qamplifier in portable transmitters.
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Dimensions (WHD)
incl. pins / tip |
x 125 x 42 mm / x 4.92 x 1.65 inch |
| Weight |
53 g / 1.87 oz |
| Information source |
The Saga of Marconi Osram Valve p. 172
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Just Qvigstad
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| Data Compliance |
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