Specialized - Cathode Ray ·CathodeRay
European rectangular monochrome television picture tube with electrostatic focusing, magnetic deflection, and an aluminized or metal-backed screen. Manufacturer documentation supports direct-view receiver service with wide-angle deflection and compact cabinet geometry.
Rectangular TV picture tube without ion trap, electrostatic focus and 90-degree magnetic deflection.
Miniature 7-contact
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
No fixed ratings are recorded for this section.
Applicable promoted fields mapped semantically from the printed ratings; device-specific electrical limits and operating conditions are preserved densely in TUBE_SECTION_PARAMETER.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Application
Television picture display
Focusing method
Electrostatic
Deflection method
Magnetic
Deflection angle
90 deg
Faceplate light transmission
60 %
Screen persistence
Medium
Screen diagonal
262.5 mm
Screen width
228 mm
Screen height
171 mm
Screen construction
Metal-backed grey glass
Ion trap
Not required
Data set 02
Published operating points and test conditions from this source.
Heater Voltage
11 V
Heater Current
68 mA
Anode Voltage
11600 V
Anode Voltage Maximum
12000 V
Screen Grid Voltage Minimum
180 V
Screen Grid Voltage Maximum
450 V
Typical Screen Grid Voltage
250 V
Negative Grid 3 Voltage Maximum
-100 V
Cathode Voltage Maximum
100 V
Deflection Angle Diagonal
90 degree
Data set 03
Published operating points and test conditions from this source.
A28
-13 W
Published value
28 cm
i approx.
75 mA
cluding tube mount for battery-operated Ugagsa @
13 kV
Uga @ 0...350
0 to 350 V
Uk cutortr @ 45
32 to 58 V
s 9 U
9395 a
s 9 U9395a max @ @ (2)
14 kV
U93r-lfia min @ @
10 kV
Uga max
450 V
g k (-Ug4) max
100 V
Published value
450 V
Ugi_min
180 V
Uk max
100 V
Electron Gun Tetrode with Einzel- Ukpmax ®
380 V
Base Special Miniature P iiak
10 mW/cm
Focusing Method Electrostatic U=k pmax
13 V
Deflection Angles Diagonal 90° Zifk max @
0.1 MQ
Neck Diameter
20 mm
Face Shape Spherical Ck approx.
5 pF
Material Filter-Glass Cg3g5aim approx.
700 pF
(Light Transmission Cqg3a
5 a
(Light Transmission Cqg3a5a/m’ approx. (2)
150 pF
Published value
57 %
Minimum Useful 228 x
171 mm
Dimensions Diagonal
262.5 mm
Overall Length 245 £
5 mm
Weight
20 kg
A28
-13 W