Tube-number record
7270
0 archive entries
7270 is a tube type in the TubeDatabase archive (class: Beam Power Tube). Recorded specifications: brand RCA, year 1960, construction Beam tetrode / beam power, base Septar, socket Special / none, maximum plate voltage 1350 V, and maximum plate dissipation 80 W. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassBeam Power Tube
BaseSpecial / none
Filament6.3 V @ 3400 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeT16
Base MaterialSeptar
SectionsSingle
Filament / Heater
Heater NotesUnipotential Cathode
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| AF Power Amplifier & Modulator - Class AB1 (ICAS) | 1250 V | — | — | 8 | 370 mA |
| Linear RF Power Amplifier - Single-Tone Modulation (ICAS) | 1250 V | — | — | — | 185 mA |
| RF Power Amplifier Class C Telegraphy (ICAS) | 1250 V | — | — |
Application Notes
Forced-air cooling is required from a small fan to prevent exceeding maximum bulb temperature of 250 C.
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