Tuning Indicator ·Triode-TuningIndicator
Magic-eye electron-ray tuning indicator using a fluorescent target and signal-controlled shadow for visual receiver tuning.
Magic-eye tuning indicator with 250 V target/anode supply and approximately -22 V grid voltage for zero shadow.
International Octal
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.
2 physical sections, each with unique specifications.
Section 1
No fixed ratings are recorded for this section.
Published ratings and characteristics promoted from the supplied Brimar source.
Section 2
No fixed ratings are recorded for this section.
Internal control/amplifier triode section; added during tuning-indicator physical-section reconciliation.
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.
Heater Voltage
6.3 V
Heater Current
300 mA
Anode Supply Voltage
250 V
Target Voltage
250 V
GridVoltageForZeroShadow
-22 V