Virtual Valve Museum

Virtual Valve Museum

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CV39 Heil tube

Size This valve measures 130x38mm overall and has an octal base.


Heater voltage 6.3V
Heater current 310mA
Average working conditions
Wavelength of operation 12.5cm
Resonator voltage 255V
Anode voltage 290V
Grid voltage 0V
Minimum power output 450mW
Maximum power output 15W

Inside view
This internal view shows the heater and cathode on the right and the anode on the left.

Pin Function
1 n/c
2 Heater
3 Anode
4 n/c
5 Resonator
6 Grid
7 Heater
8 Cathode
TC Output line
Top quarter view Bottom quarter view