Tube-number record
1AM4/1T4-SF
0 archive entries
1AM4/1T4-SF is a tube type in the TubeDatabase archive (class: RF Remote Cutoff Pentode). Recorded specifications: brand RETMA, construction Pentode, socket Miniature 7-pin (B7G), and maximum plate voltage 90 V. The archive does not yet hold a photographed example of this type.
BrandRETMA
ClassRF Remote Cutoff Pentode
BaseMiniature 7-pin (B7G)
Construction
Primary TypePentode
EnvelopeT-5 1/2
SectionsSingle
Filament / Heater
MaterialCoated
Absolute Maximum Ratings
Plate Voltage90 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 90 V | 900 | 500000 | — | 3.5 mA |
Application Notes
RF Remote Cutoff Pentode designed for portable receiver applications.
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