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

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6685 vacuum tube outline illustration

Tube-number record

6685

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6685 is a tube type in the TubeDatabase archive (class: Dual TR Tube). Recorded specifications: brand Bomac Laboratories, Inc., construction Other / special, socket Waveguide, and maximum plate dissipation 10 W. The archive does not yet hold a photographed example of this type.

BrandBomac Laboratories, Inc.
ClassDual TR Tube
BaseWaveguide

Construction

Primary TypeOther / special
EnvelopeIntegral cavity
SectionsDual

Filament / Heater

Absolute Maximum Ratings

Plate Dissipation10 W

Audio Performance

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Ignitor————0.1 mA

Application Notes

Designed to operate with suitable short-slot hybrid junctions to provide a balanced duplexer using RG 96/U size waveguide.

Datasheets

Datasheet: 6685.pdf

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

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    Key Features
    • Broad-band
    • Fixed tuned gaps
    • Balanced duplexer application