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CV2009 grounded-grid triode

Size This valve measures 55x21mm overall and has 8 tags including one connected to the central spigot.

This valve is a modified CV417. Note that the valve has the original CV417 markings painted out but retains the 6AQ4 markings - which is no longer valid (except electrically) due to the modifications to the base.

Heater voltage 6.3V
Heater current 0.3A
Max operating anode voltage 275V
Max anode voltage (Ia=0) 550V
Max anode dissipation 3W
Max mean cathode current 17mA
Mutual conductance 8.5mA/V
Amplification factor 100
Min grid voltage to ensure cut-off slope of 100µA/V -8V
Max heater-cathode voltage 150V
Max grid-cathode voltage 100V
Max operating frequency 250MHz


Lead Function
1 Grid
2 Cathode
3 Heater
4 Heater
5 Cathode
6 Grid
7 Anode