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CV1103 tuning indicator

Size This valve measures 103x38mm overall and has an octal base


Heater voltage 6.3V
Heater current 300mA
Max anode voltage 250V
Max target voltage 250V
Approx target current (Vg=0) 4.5mA
Approx triode current (Va=250, through 1M ohm) 0.24mA
Triode grid voltage for 0 degree shadow angle (Va=250) -22V


The valve is designed to work satisfactorily with a heater voltage between 5.7 and 7.5 volts.

Pin Function
1 n/c
2 Heater
3 Anode
4 Target
5 Control grid
6 no pin
7 Heater
8 Cathode



Top quarter view