Radio Valve Data: 1915-1960

Keith R Thrower OBE, The Valve Museum, April, 2022.

Post-1925 amplifying valves, frequency changers
and signal diodes

Type

Description

Filament

Anode

Auxillary Grid

Grid

r_a

g_m/g_o

R_L

P_o

R_k

Base ^{(1)Pin-out details for non-exhibits can be found with the base details.}

Year

Volts

Amps

Volts

mA

Volts

mA

-V

kΩ

mA/V

kΩ

Watts

Ω

Type

Ref

 Voltron

 Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless

202 (Red Star)

RF or detector triode

1.8-2.0*

0.20

30-100

-

-

32.0

0.44

B4

1

1926

202 (Green Star)

General-purpose triode

1.8-2.0*

0.20

30-100

-

-

15.0

0.47

B4

1

1926

210HF

Triode

1.8-2.0*

0.10

-

-

B4

1

L.C.2 (Red Star)

RF or detector triode

1.8-2.0*

0.06

-

-

40.0

0.35

B4

1

1926

L.C.2 (Green Star)

General-purpose triode

1.8-2.0*

0.06

30-80

-

-

14.0

0.36

B4

1

1926

L.S.2 (Power)

AF or output triode

1.5-2.0*

0.35

60-120

-

-

9.0

0.56

B4

1

1926

L.C.4 (Red Star)

RF or detector triode

4.0*

0.06

30-100

-

-

40.0

0.40

B4

1

L.C.4 (Green Star)

General-purpose triode

3.5-4.0*

0.06

30-100

-

-

0-6

14.0

0.50

B4

1

P.4 (Power)

Output triode

3.0-4.0*

0.35

60-120

-

-

0-6

14.0

0.36

B4

1

P.6 (Power)

Output triode

5.0-6.0*

0.25

60-120

-

-

0-6

6.4

0.86

B4

1