Antique radios, Old Time Radios
TV-7
| Base |
UV-Base (4 Pins+Bayonet, USA 1914 WE)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 0.72 Ampere / Direct / Battery = |
| Description |
This tube is a high vacuum Detector and Amplifier type.
Information from Hiroyuki Kato san:
Tokyo Radio's TV-7 tube was advertised in a magazine in 1924.
It received the type certificate from the Ministry of Communication in 1925.
1926 issue of the Radio Yearbook lists the TV-7 as a detector/amplifier and the specifications are as below.
Plate Voltage: 80V
Filament Voltage: 4.5V (Another source says 4.0V)
Filament Current: ~0.7A
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Dimensions (WHD)
incl. pins / tip |
45 x 123 x mm / 1.77 x 4.84 x inch |
| Weight |
48 g / 1.69 oz |
| Information source |
-- Collector info (Sammler) Dawn of Tube Production in Japan - Ohtsuka.
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TV-7: Fin Stewart
Fin Stewart
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Just Qvigstad
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