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

 Monotone

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

HF

RF or detector triode

2.0*

-

-

B4

1

1928

LF

AF triode

2.0*

-

-

B4

1

1928

Power

Output triode

2.0*

-

-

B4

1

1928

RCC

RCC triode

2.0*

-

-

B4

1

1928

HF

RF or detector triode

4.0*

-

-

B4

1

1928

LF

AF triode

4.0*

-

-

B4

1

1928

Power

Output triode

4.0*

-

-

B4

1

1928

RCC

RCC triode

4.0*

-

-

B4

1

1928

HF

RF or detector triode

6.0*

-

-

B4

1

1928

LF

AF triode

6.0*

-

-

B4

1

1928

Power

Output triode

6.0*

0.10

120

-

-

7.5-12

4.75

1.05

B4

1

1928

RCC

RCC triode

6.0*

-

-

B4

1

1928

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