Tube-number record
INDICATOR TUBE
0 archive entries
INDICATOR TUBE is a tube type in the TubeDatabase archive (class: Indicator Tube). Recorded specifications: year 1969, construction Other / special, and socket CRT / special base. The archive does not yet hold a photographed example of this type.
ClassIndicator Tube
BaseCRT / special base
Construction
Primary TypeOther / special
EnvelopeGlass
Filament / Heater
Absolute Maximum Ratings
Audio Performance
Key Features
- No filter coating
- Blue absorbing filter recommended
- Circular polarized amber filter recommended
Application Notes
The type ZM1023 is electrically identical with type ZM1021 but has no filter coating. The use of a separate blue absorbing e.g. circular polarized amber filter is recommended.
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