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

 Frelat

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

207 G

General-purpose triode

2.0*

0.07

-

-

B4

1

1928

207 RH

RF or RCC triode

2.0*

0.07

-

-

B4

1

1928

210 NP

Output triode

2.0*

0.10

-

-

B4

1

1928

407 G

General-purpose triode

4.0*

0.10

-

-

B4

1

1928

407 NP

Output triode

4.0*

0.07

-

-

B4

1

1928

407 RH

RF or RCC triode

4.0*

0.07

-

-

B4

1

1928

A.V.L.

General-purpose triode

3.8-4.0*

0.50

20-100

-

-

B4

1

1926

D.E.

General-purpose triode

1.8-2.0*

0.06

30-100

-

-

B4

1

1926

D.E.P.

Output triode

3.5-50*

0.12

60-250

-

-

B4

1

1926

D.K.P.

Output triode

1.8-2.0*

0.40

30-100

-

-

B4

1

1926

H

Detector triode

3.8-4.0*

0.50

20-30

-

-

B4

1

1926

K

Detector triode

1.8-2.0*

0.30

20-100

-

-

B4

1

1926

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

L

Detector or AF triode

3.0-4.0*

0.25

20-100

-

-

B4

1

1926

P

Output triode

3.8-4.0*

0.50

100-200

-

-

B4

1

1926