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

 Vatea

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

HX406†

RF or detector triode

4.0*

0.06

150

4.0

-

-

4.0

8.35

2.00

B4

1

1930

L406

Output triode

4.0*

0.06

-

-

B4

1

LX414

Output triode

4.0*

0.14

-

-

B4

1

1930

PX4200

Output triode

4.0*

2.00

550

45.0

-

-

36.0

2.5

4.00

7.0

5.9

B4

1

RX406†

Triode

4.0*

0.06

150

1.1

-

-

2.9

24.0

1.05

B4

1

1930

UX406†

Detector or AF triode

4.0*

0.06

150

3.5

-

-

9.0

5.0

1.80

B4

1

1930