6F6G Tungsol used/good 1940”s

34ma

Gm=2530

Test settings:

Vplate=285V

Vscreen=285V

Vgrid=-20V

Good Ma range = 32-38ma

Good Gm range = 2400-2600

Recommended for

– Sparton Nocturne 1186 from 1936
– Fire Stone Sir Chef S-7404-3 1939
– Montgomery-Ward Airline Model 62-226
– Supratek Cortese
– Victoria
– WE 106 preamp clone

– Wards Airline Radio