Tube-number record
CK6872
0 archive entries
CK6872 is a tube type in the TubeDatabase archive (class: Reliable Subminiature Pentode). Recorded specifications: brand Raytheon, construction Pentode, base Flat Press, socket Flexible / flying leads, maximum plate voltage 165 V, and maximum plate dissipation 1 W. The archive does not yet hold a photographed example of this type.
BrandRaytheon
ClassReliable Subminiature Pentode
BaseFlexible / flying leads
Filament6.3 V @ 200 mA
Construction
Primary TypePentode
EnvelopeGlass T-3
Base MaterialFlat Press
Sections1
Filament / Heater
Heater NotesOperation time approximately 20 seconds
Absolute Maximum Ratings
Plate Voltage165 V
Plate Dissipation1 W
Grid 2 Voltage155 V
Cathode Current16.5 mA
H-C Voltage200 V
Audio Performance
Key Features
- Semi-remote-cutoff
- VHF region operation
- Automatic Gain Control (AGC) applicable
- Long life
- High temperature service
- Mechanical shock and vibration resistant
- Separate terminal connection for Grid #3
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Normal Operation | 120 V | 4100 | 340000 | — | 7.75 mA |
Application Notes
A separate terminal connection is provided for Grid #3, which under self-bias conditions can be connected directly to ground permitting the cathode by-pass capacitor to be omitted for lower grid loading.
0 results