Skip to main content

Specialized - Cathode Ray ·CathodeRay

90LO1A

Nine-inch radar cathode-ray tube with electrostatic focusing, magnetic deflection, and long orange afterglow. The persistent screen retains radar traces and echoes between successive sweeps.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
IO
Base pins
-
Nominal heater
4 V / 1 A

Description

Electrostatically focused, magnetically deflected 9-inch radar cathode-ray tube with long orange afterglow.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
IO
Base pins
-
Nominal heater voltage
4 V
Nominal heater current
1 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Cathode Ray

X-ray radiationInterelectrode capacitances
Max plate voltage
10000 V

Published ratings and characteristics promoted from the approved datasheet.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

196X Cintel

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Anode 1 to all other electrodes capacitance

    15 pF

    Published datasheet value