Tube-number record
6889
1 archive entry
6889 is a tube type in the TubeDatabase archive (class: Receiving Tubes). Recorded specifications: brand Bendix, construction Beam tetrode / beam power, base Glass filled Mica, socket Octal, maximum plate voltage 3000 V, and maximum plate dissipation 30 W. The archive holds 1 photographed example of this type.
BrandBendix
ClassReceiving Tubes
BaseOctal
Filament6.3 V @ 1.2 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeNonex Glass T-11
Base MaterialGlass filled Mica
Sections1
Filament / Heater
MaterialPure Tungsten
Warm-up Time45s
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 250 V | 5400 | — | — | 74 mA |
Application Notes
Designed for aircraft, military and industrial applications where high levels of vibration and shock are encountered. Avoid designs where the tube is subjected to all maximum ratings simultaneously.