Specialized - Cathode Ray ·CathodeRay
RFT direct-view television picture tube with electromagnetic focusing and electromagnetic deflection. Its high-voltage screen system is intended for monochrome receiver presentation; larger variants include an ion-trap magnet.
A cathode-ray picture tube for direct viewing in television receivers, with a whitish 180 × 240 mm screen, electromagnetic focusing and deflection, and an ion-trap magnet.
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
Cathode-ray electron-gun/display system with ion-trap magnet, electromagnetic focusing and deflection.
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.
Anode operating voltage
10 kV
Screen-grid operating voltage
450 V
Cathode current
30 µA
Ion-trap magnetic field
60 G
Anode minimum voltage
8 kV
Cathode peak current maximum
100 µA
Heater-cathode voltage maximum
125 V
Screen loading maximum
5 mW/cm²
Cutoff voltage
-35 to -90 V
Warm-up time
1 min