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

 Amplion

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

AMG.2/25 Cosmos DE11

General-purpose triode

2.0*

0.25

120

-

-

1.6-6

18.0

0.50

B4

1

1926

AMG.6/9 Cosmos DE55

General-purpose triode

6.0*

0.09

120

-

-

1.5-6

18.0

0.50

B4

1

1926

AML.2/30 Cosmos SP18/RR

Output triode

2.0*

0.30

120

-

-

1.5-9

7.5

0.93

B4

1

1926

AML.6/25 Cosmos SP55/R

Output triode

6.0*

0.25

120

-

-

1.5-9

3.5

1.70

B4

1

1926

AMR.2/9 Cosmos SP18/B

RF or RCC triode

2.0*

0.09

120

-

-

0-1.5

70.0

0.50

B4

1

1926

AMR.6/9 Cosmos SP55/B

RF or detector triode

6.0*

0.09

120

-

-

1.5-6

55.0

0.64

B4

1

1926

AMS.6/100

Output triode

6.0*

0.10

350

-

-

3-18

B4

1

1926