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

 Beriton

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

H.F.2 (red line)

RF or detector triode

2.0*

0.10

30-90

-

-

29.0

0.45

B4

1

1927

H.F.4 (red line)

RF or detector triode

4.0*

0.10

30-90

-

-

11.0

1.20

B4

1

1927

H.F.6 (red line)

RF or detector triode

6.0*

0.10

30-90

-

-

20.0

0.70

B4

1

1927

L.F.2 (white line)

AF triode

2.0*

0.10

30-100

-

-

1.5-4.5

15.0

0.50

B4

1

1927

L.F.4 (white line)

AF triode

4.0*

0.10

30-100

-

-

1.5-4.5

6.25

1.20

B4

1

1927

L.F.6 (white line)

AF triode

6.0*

0.10

60-100

-

-

1.5-4.5

10.0

0.85

B4

1

1927

Power 2 (gn line)

Output triode

2.0*

0.25

60-100

-

-

4.5-9.0

7.0

0.70

B4

1

1927

Power 4 (gn line)

Output triode

4.0*

0.15

60-100

-

-

4.5-13.5

5.0

1.00

B4

1

1927

Power 6 (gn line)

Output triode

6.0*

0.10

30-90

-

-

4.5-13.5

5.0

1.00

B4

1

1927

R.C.2

RCC triode

2.0*

0.10

60-120

-

-

1.5-3.0

120.0

0.25

B4

1

1927

R.C.4

RCC triode

4.0*

0.10

60-120

-

-

1.5-3.0

80.0

0.50

B4

1

1927

R.C.6

RCC triode

6.0*

0.10

100-150

-

-

1.5-9.5

80.0

0.50

B4

1

1927

Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others