Other (weirdo tubes) vacuum tubes

Other

Type 12 appears in the supplied source, but the matching electrical entry is not reproduced clearly enough to establish construction or function without guessing.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

Type 3A6 appears in the supplied receiving-tube handbook, but its row is not legible enough to establish a reliable construction or application.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

Type 5610 remains functionally unresolved from the available approved source material; no narrower classification is assigned without readable application evidence.

Base

Not recorded

Socket

B7G

Heater

6.3 V

Sections

1

Other

Type 8346 remains functionally unresolved from the available approved source material; no narrower classification is assigned without readable application evidence.

Base

Not recorded

Socket

B12A

Heater

Not recorded

Sections

1

Other

ASG657 remains a special-purpose device whose available source does not support a more specific functional classification without inference.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Other

B40M1 remains functionally unresolved from the available approved source material and is conservatively retained as an unspecified special-purpose device.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

CEM75 is documented as a special-purpose electron tube, but the available source does not expose enough application detail for a narrower evidence-based classification.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

CH1027-family Curpistor constant-current regulator rated at approximately 10^-10 ampere, intended to maintain an extremely small controlled current.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

CH1027-family Curpistor constant-current regulator for specialized precision electronic circuits, with its specific current value defined by the type suffix.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

CH1027-family Curpistor constant-current regulator for precision low-current service, providing a defined current largely independent of applied voltage.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

CH1027-family Curpistor constant-current regulator intended for specialized precision circuits requiring a stable predetermined current.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

Raytheon subminiature special-purpose tube whose construction and application columns are blank or damaged in the available handbook source.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

Raytheon subminiature special-purpose tube whose target handbook row is not legible enough to establish a reliable functional classification.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

CK5697 remains functionally unresolved from the available approved source material; no narrower classification is assigned without explicit application evidence.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

CVS1 is documented as a special-purpose electron tube, but the available source does not provide enough clear application detail for a narrower classification.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

CY2253 is documented as a special-purpose electronic tube, but the available evidence does not support a narrower functional assignment without inference.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Diode-Heptode

Battery diode-heptode with space-charge grid designed for audio-frequency amplification and detection in low-consumption portable receiving equipment.

Base

Not recorded

Socket

Not recorded

Heater

1.4 V

Sections

2

Other

RCA DR2000 Numatron segmented incandescent numeric display, nominal 4.5 V and 24 mA per segment; non-electron-beam display device.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

Philips E448 remains functionally unresolved from the available datasheet summary; a narrower classification is not assigned without explicit application evidence.

Base

Not recorded

Socket

B5

Heater

4 V

Sections

1

Other

One-shot evaporation ion pump incorporating a Bayard-Alpert gauge and zirconium getter filament, providing both vacuum pumping and independent pressure measurement.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

Microwave tube represented primarily by a mechanical-drawing sheet; the supplied scan does not provide legible electrical performance data for a narrower functional classification.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

General Electric special-purpose industrial vacuum device whose available source does not support a more specific functional assignment without guessing.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

Indirectly heated rectifier for power-supply service. Its 20 V low-current heater suits series strings, while available manufacturer data do not support a narrower specialization.

Base

Not recorded

Socket

Not recorded

Heater

20 V

Sections

1

TuningIndicator

Compact selective digital indicator with green display and a 24 V, 125 mA heater, intended for discrete visual information display rather than receiver tuning.

Base

Not recorded

Socket

Not recorded

Heater

24 V

Sections

1

TuningIndicator

Compact selective digital indicator with orange display and a 24 V, 125 mA heater, intended for discrete visual information display rather than receiver tuning.

Base

Not recorded

Socket

Not recorded

Heater

24 V

Sections

1

Other

Philips cross-reference designation for microwave tube 4C35; available source establishes microwave service but not enough detail here for a narrower functional category.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

PL6574 is documented as a special-purpose electronic tube, but the available source summary does not establish a narrower function reliably.

Base

OCTAL

Socket

IO

Heater

6.3 V

Sections

1

Other

S132IV is documented as a special-purpose electronic tube; available source material does not support a more specific classification without inference.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Other

Single-stage electrostatically focused ultraviolet image-converter tube that transforms ultraviolet images into bright visible images for scientific and astrophysical applications.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

Single-stage electrostatically focused visible and near-infrared image intensifier with fast electronic gating for night-vision and synchronized optical-imaging applications.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

Rugged three-stage electrostatically focused image intensifier with automatic brightness control, fiber-optic windows, and integral high-voltage supply for military night vision.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

Bendix Chronotron thermal time-delay resistance device, using controlled heating and resistance change to provide a predetermined electrical timing delay.

Base

Not recorded

Socket

B7G

Heater

Not recorded

Sections

1

Pentode-Tetrode

Tetrode-output pentode combination designed for detector and audio-output service, integrating radio signal detection with loudspeaker-driving power amplification.

Base

Not recorded

Socket

B8G

Heater

45 V

Sections

2

Other

VGIA1 is documented as a special-purpose electron tube, but the available source does not expose enough functional detail for a narrower evidence-based classification.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Other

Evacuated vibrating-membrane capacitor used as a DC-to-AC converter in electrometers, dosimeters, pH meters, and other very-high-input-resistance instruments. Its membrane resonates around 5.3–6.3 kHz, enabling modulation of extremely small DC measurement signals.

Base

Magnoval, gold plated pins

Socket

B9E

Heater

Not recorded

Sections

1