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VT115 pentode

Size This valve measures 130x55mm overall

This valve was made for the GPO (General Post Office, who dealt with telecommunications at that time).

Heater voltage 4V
Heater current 1A
Max anode voltage 250V
Max screen voltage 250V
Max anode dissipation 8W
Mutual conductance (Va=250, Vg2=200, Vg1=-5) 2.4mA/V


Pin Function
1 n/c
2 Control grid
3 Screen grid
4 Heater
5 Heater
6 Cathode + suppressor grid
7 Anode

Donated by Bryan Lonsdale

This file was last modified 14:44:53, Tuesday September 02, 2014

  FOR SALE: Note that any valve which is not CV marked is now for sale. Contact me via email - see the home page.