Antique radios, Old Time Radios
PJ-7
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Country:
United States of America (USA)
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| Identical to |
PJ-7
= GL-5742
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| Similar
Tubes |
Normally replaceable-slightly different:
5742
Other base:
PJ-2
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
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| Was used by |
Industrial |
| Filament |
Vf 4.5 Volts / If 1.1 Ampere / Direct |
| Description |
10W anode dissipation; thoriated tungsten filament; mu 30. Capable of operation as class A, B or C amplifier up to 6MHz. Was introduced in the early 1920s for railroad signaling use, i.e. inductive transmission of signal indications into the locomotive cab. It is described as Pliotron. UX base. Voltage Amplifier.
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| Information source |
- - Manufacturers Literature GE Vacuum Tube Designations 12/10/1930
Tube Lore (I)
Tube Lore (II)
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Just Qvigstad
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