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ATS25 beam tetrode

Size This valve measures 145x50mm overall and has a 5 pin base.

The prototype of this valve is the 807. The CV sheet (CV1374 is equivalent) is marked as obsolete in 1946.

Heater voltage 6.3V
Heater current 900mA
Max anode voltage 600V
Max screen voltage 300V
Max anode dissipation 25W
Max screen dissipation 3.5W
Mutual conductance (At Va=200, Vg2=250, Ia=83mA, Vg1=-12.5) 7.1mA/V
Max signal DC 120mA
Cae 8.2pF
Cge 12.5pF
Cag 0.2pF


Pin Function
1 Heater
2 Screen grid
3 Control grid
4 Cathode and beam plates
5 Heater
TC Anode

This file was last modified 13:29:06, Sunday September 11, 2016