Specialized - Cathode Ray vacuum tubes

CathodeRay

Seven-inch P1 cathode-ray instrument tube for oscillographic or measurement display, with manufacturer-specified focusing, deflection, accelerating-voltage, and phosphor characteristics.

Base

Not recorded

Socket

B14A

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch P1 cathode-ray instrument tube for oscillographic or measurement display, with manufacturer-specified focusing, deflection, accelerating-voltage, and phosphor characteristics.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

CathodeRay

Seven-inch diagonal square-face five-beam CRT with electrostatic focusing and deflection. Each independently controlled beam scans a separate screen area, enabling simultaneous multi-channel instrument or waveform presentation.

Base

Not recorded

Socket

B12A

Heater

6.3 V

Sections

5

CathodeRay

Five-and-a-half-inch square-faced CRT with electrostatic focusing and deflection, post acceleration, low pattern distortion, high sensitivity, and high brightness for precision instrument display.

Base

Not recorded

Socket

Not recorded

Heater

2 V

Sections

1

CathodeRay

Seven-inch flat-faced dual-beam CRT with electrostatic focusing and deflection, post acceleration, aluminized P7 long-persistence screen, and suitability for radar and oscillographic applications.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

CathodeRay

Seven-inch rectangular single-gun CRT with electrostatic focusing and deflection and post acceleration. Its electron optics provide high brightness, small spot size, and reduced edge defocusing for instrument display.

Base

Not recorded

Socket

B12A

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch cathode-ray display tube with magnetic focusing, magnetic deflection, P1 phosphor, and approximately 55-degree maximum deflection. General Electric documentation supports general instrument-display service.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

CathodeRay

Seven-inch CRT with magnetic focusing and deflection and a P2 blue-green/green long-persistence screen. Sylvania documentation provides electrical ratings, capacitances, and operating conditions for persistent instrument display.

Base

Not recorded

Socket

IO

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch magnetic-focus and magnetic-deflection CRT primarily designed for radar indicators, using a P7 long-persistence phosphor to retain echoes visibly between successive sweeps.

Base

Not recorded

Socket

IO

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch direct-view radar CRT with magnetic focusing and deflection, designed as a replacement for the 7BP7. Its P7-type long-persistence screen supports persistent radar indication.

Base

Not recorded

Socket

DUODECAL11

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch magnetic-focus and magnetic-deflection CRT with a high-resolution gun and long-persistence screen, intended for radar and oscilloscope applications requiring a lingering, sharply defined trace.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch direct-view cathode-ray display tube with electrostatic focusing and magnetic deflection. Sylvania publishes heater, capacitance, electrode-rating, operating-condition, and mechanical data for general indicator and display service.

Base

Not recorded

Socket

OCTALCRT8

Heater

6.5 V

Sections

1

CathodeRay

Seven-inch diagonal square-face five-beam CRT with electrostatic focusing and deflection plus post acceleration. Its multiple beams support simultaneous multi-channel oscillographic or instrument presentation.

Base

Not recorded

Socket

PENTAQUINTAL25

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch flat-face five-beam CRT with electrostatic focusing and deflection and linear post acceleration. The multi-beam construction supports simultaneous instrument traces with enhanced final-beam acceleration.

Base

Not recorded

Socket

PENTAQUINTAL25

Heater

6.3 V

Sections

1

CathodeRay

The 7CP1 is a seven-inch oscillograph cathode-ray tube employing electrostatic focusing and magnetic deflection. Its green P1 phosphor screen provides medium persistence for electrical waveform observation. The indirectly heated electron gun operates from a 6.3-volt supply and supports laboratory measurement applications.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

The 7CP18 is a seven-inch oscillograph cathode-ray tube intended for electronic waveform observation. It employs electrostatic focusing and magnetic deflection with a white-fluorescing P18 screen of medium persistence. Its indirectly heated cathode and large viewing area suit instrumentation applications.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch kinescope for television display with electrostatic focusing, magnetic deflection, and P4 picture screen. RCA documentation gives anode capability around 8 kV for direct-view receiver service.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch electrostatic-focus, magnetic-deflection CRT with a high-resolution gun and long-persistence P7 screen, intended for oscillographic applications where displayed traces must remain visible after excitation.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch direct-view television CRT with electrostatic focusing, magnetic deflection, external conductive coating, and a double-field ion trap. Its anode operates to approximately 8 kV.

Base

Not recorded

Socket

OCTALCRT8

Heater

6.3 V

Sections

1

CathodeRay

The 7GP4 is a seven-inch cathode-ray kinescope designed for electronic picture display. Its electrostatic focusing and deflection systems control the electron beam without magnetic scanning coils. The white P4 phosphor screen and indirectly heated cathode support direct-view image presentation.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

The 7HP4 is a cathode-ray picture tube designed for electronic image-display applications. Its electron gun controls beam current and directs electrons toward a phosphor screen. The tube uses an indirectly heated cathode and requires appropriate focusing, deflection, and accelerating supplies.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

The 7JP1 is a seven-inch oscillograph cathode-ray tube equipped with electrostatic focusing and deflection. Its green P1 phosphor screen provides medium persistence for viewing electrical waveforms. The electron gun and deflection electrodes enable precise beam positioning in laboratory oscilloscopes.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch direct-view television picture tube with electrostatic focusing and electrostatic deflection and a P4 white screen. Manufacturer documentation gives anode capability to approximately 6 kV.

Base

Not recorded

Socket

B12D

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch direct-view CRT with electrostatic focusing and deflection, clear faceplate, and a P7 long-persistence screen. Sylvania documentation gives anode capability around 2.8 kV for persistent display.

Base

Not recorded

Socket

DIHEPTAL12

Heater

6.3 V

Sections

1

CathodeRay

Cathode-ray display tube documented in a bilingual Russian source. The available extracted material does not establish a sufficiently specific application, focusing method, or screen behavior for a narrower functional classification.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch CRT with electromagnetic deflection, electrostatic zero-focus-voltage operation, and P1 phosphor. Published anode capability reaches approximately 18 kV for bright specialized instrument display.

Base

8EQ

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch direct-view radar indicator CRT with magnetic focusing and deflection and a P14 purple/orange medium-long-persistence screen. Sylvania specifies anode capability to approximately 8.8 kV.

Base

Not recorded

Socket

DUODECAL5

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch magnetic-focus and magnetic-deflection CRT primarily intended for radar indication, using a P7 long-persistence phosphor. Manufacturer sources give high-voltage operation to approximately 8 kV.

Base

65-57

Socket

DUODECAL5

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch projection kinescope with electrostatic focusing, magnetic deflection, P4 screen, and forced-air cooling. RCA specifies extremely high accelerating voltage and includes explicit X-ray radiation precautions for projection operation.

Base

Not recorded

Socket

DUODECAL11

Heater

6.3 V

Sections

1

CathodeRay

The 7QP4 is a seven-inch monitor kinescope using magnetic focusing and magnetic deflection. Its white P4 phosphor screen provides short-persistence images suitable for television monitoring. The electron gun requires an external ion-trap magnet, while an indirectly heated cathode supplies beam emission.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Small Tesla cathode-ray display tube for compact oscillographs and continuous monitoring of complex electrical waveforms, using electrostatic focusing and asymmetric electrostatic deflection at approximately 1 kV.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

The 7SP7 is a seven-inch cathode-ray tube designed for long-persistence oscillographic displays. Its magnetically focused and deflected electron beam produces a small, bright spot on a cascade P7 phosphor screen. Blue fluorescence and greenish-yellow afterglow permit observation of intermittent signals.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch cathode-ray radar display tube documented by Cintel. Its datasheet specifies focusing and deflection systems, phosphor and afterglow behavior, capacitances, and operating ratings for radar indication.

Base

Not recorded

Socket

IO

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch cathode-ray radar display tube documented by Cintel. Published information covers its focusing and deflection systems, phosphor afterglow, capacitances, and operating conditions for radar presentation.

Base

Not recorded

Socket

IO

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch monitor kinescope with electrostatic focusing, magnetic deflection, and a P4 screen. RCA documentation provides accelerating-electrode, control, capacitance, and deflection data with anode capability around 12 kV.

Base

J1-21

Socket

DUODECAL11

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch direct-view CRT with magnetic focusing and deflection and a high-resolution P25 orange long-persistence screen. Sylvania specifies anode capability to approximately 13.2 kV.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch magnetic-focus and magnetic-deflection CRT with a relatively large useful scan and P7 long-persistence phosphor. Multiple manufacturer sources support radar and persistent instrument-display applications.

Base

Not recorded

Socket

IO

Heater

6.3 V

Sections

1

CathodeRay

High-resolution-gun version of the seven-inch P7 long-persistence CRT with magnetic focusing and deflection. Its improved electron gun supports sharper persistent radar and instrument traces.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch direct-view CRT with magnetic focusing and magnetic deflection. No manufacturer artifact is attached in this pass, so the more specific application and screen characteristics are not inferred.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch oscillograph CRT with electrostatic focusing and deflection and a P1 screen. Its direct-view beam system is designed for waveform and instrumentation display.

Base

612-37

Socket

DUODECAL11

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch oscillograph CRT electrically equivalent to the 7VP1 but fitted with a P31 screen. Electrostatic focusing and deflection provide precise waveform presentation for instrumentation.

Base

612-37

Socket

DUODECAL11

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch projection kinescope with electrostatic focusing, magnetic deflection, P4 screen, forced-air cooling, and extremely high accelerating voltage. Designed for projected television images, it carries explicit X-radiation precautions.

Base

Not recorded

Socket

DUODECAL11

Heater

6.3 V

Sections

1

CathodeRay

Seven-inch five-gun oscilloscope CRT with electrostatic focusing and deflection. Each independently controllable gun scans the full screen, with electrostatic shielding minimizing interaction between simultaneous traces.

Base

Not recorded

Socket

B12A

Heater

6.3 V

Sections

5

CathodeRay

Seven-inch multi-beam oscilloscope CRT with independently controllable beams, electrostatic focusing and deflection, and post-acceleration for bright simultaneous waveform presentation.

Base

Not recorded

Socket

PENTAQUINTAL25

Heater

6.3 V

Sections

1

CathodeRay

Rectangular high-resolution flying-spot-scanner CRT with low-voltage electrostatic focusing and 90-degree magnetic deflection. Its fine scanning light spot is intended for optical image conversion and television scanning systems.

Base

B12A

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Rectangular television studio-monitor CRT with low-voltage electrostatic focusing and 90-degree magnetic deflection, designed for professional television monitoring rather than domestic receiver service.

Base

B12A

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Eight-inch diagonal rectangular television monitor CRT with magnetic focusing, 90-degree magnetic deflection, and a metal-backed screen for professional direct-view monitoring.

Base

B12A

Socket

Not recorded

Heater

6.3 V

Sections

1

CathodeRay

Military electronic-storage cathode-ray display tube with separate writing and flood guns. Designed for stored-image presentation, it retains electronically written information for persistent military display use.

Base

Not recorded

Socket

B14

Heater

Not recorded

Sections

1