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Tube Database (7,341 tube types · 1,270 archive entries)

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6647 vacuum tube outline illustration

Tube-number record

6647

0 archive entries

6647 is a tube type in the TubeDatabase archive (class: Dual TR Tube). Recorded specifications: brand Bomac Laboratories, Inc., construction Gas Switching Tube, socket Waveguide, and maximum plate dissipation 100 W. The archive does not yet hold a photographed example of this type.

BrandBomac Laboratories, Inc.
ClassDual TR Tube
BaseWaveguide
Filament115 V @ — mA

Construction

Primary TypeGas Switching Tube
EnvelopeIntegral Cavity
SectionsDual

Filament / Heater

Heater NotesHeater Wattage: 25 W; 380-1000 cps; includes thermostat control

Absolute Maximum Ratings

Plate Dissipation100 W

Application Notes

Designed to operate with suitable short-slot hybrid junctions to provide a balanced duplexer using RG-52/U size waveguide.

Datasheets

Datasheet: 6647.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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    Cathode Current0.2 mA

    Audio Performance

    Key Features
    • Broad-band
    • Gas switching
    • Fixed tuned gaps
    • Two heaters and thermostat permanently attached
    • Balanced duplexer operation