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Manufacturing
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Function
- Ballast
- Barretter
- Beam power amplifier
- Diode
- Diode pentode
- Diode tetrode
- Diode triode
- Diode triode pentode
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- Double diode pentode
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- Half-wave rectifier
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- Pentode
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- Quadruple diode
- Relay
- Tetrode
- Thermal delay switch
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- Triode heptode
- Triode hexode
- Triode pentode
- Triode tetrode
- Triode twin pentode
- Triple diode
- Triple diode triode
- Triple triode
- Tuning indicator
- Twin diode twin triode
- Twin pentode
- Voltage regulator
- Type
12SH7 / VT-288 JAN CRC
Top of the line octal based pentode tubes manufactured for US military by world renowned RCA. These metal tubes are printed in white JAN 12SH7 VT-288 MADE IN U.S.A. with old style RCA logo, and coded K6E or H5E. Brown military boxes are printed U.S. ARMY U.S. NAVY MFGD. BY RADIO CORPORATION OF AMERICA, different contract numbers and 1940's dates. Some boxes are also printed LINK RADIO CORP. N.Y.C. or ADMIRAL CORP. CONT. 62370, and stamped in German GEPRUFT.
Data sheet
- Base
- 8 pin Octal
- Boite type
- 3/1
- Emplacement
- 19+7
- Quide
- 2892
- Fonction
- Pentode
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