Antique radios, Old Time Radios
4-400B
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| Tube type: |
Transmitting Tetrode, air cooled VHF |
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| Identical to |
4-400B
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| Similar
Tubes |
Other shape (e.g. bulb type):
4-400A
; 4-400C
Normally replaceable-slightly different:
6775
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| Base |
Giant 5 pin (ESEC B5F)
Top contact with a cap.
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 5 Volts / If 14.5 Ampere / Direct |
Dimensions (WHD)
incl. pins / tip |
84 x 145 x mm / 3.31 x 5.71 x inch |
| Weight |
236 g / 8.32 oz |
| Information source |
Tube Lore (II) p.110
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4-400B: ARRL Handbook 1972
Anonymous 10 Collector
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Just Qvigstad
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Collection of
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