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

 Britannia

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

206d (White line)

Detector triode

2.0*

0.06

-

-

25.0

0.43

B4

1

1926

206h (Red line)

RF triode

2.0*

0.06

-

-

35.0

0.40

B4

1

1926

206l (Green line)

AF triode

2.0*

0.06

-

-

18.0

0.44

B4

1

1926

206rc (Blue line)

RCC triode

2.0*

0.06

-

-

120.0

0.33

B4

1

1926

215d (White line)

Detector triode

2.0*

0.15

-

-

30.0

0.50

B4

1

1926

215h (Red line)

RF triode

2.0*

0.15

-

-

40.0

0.50

B4

1

1926

215l (Green line)

AF triode

2.0*

0.15

-

-

12.0

0.50

B4

1

1926

406d (White line)

Detector triode

4.0*

0.06

-

-

19.0

0.50

B4

1

1926

406h (Red line)

RF triode

4.0*

0.06

-

-

23.0

0.65

B4

1

1926

406l (Green line)

AF triode

4.0*

0.06

-

-

11.0

0.55

B4

1

1926

406RC (Blue line)

RCC triode

4.0*

0.06

-

-

120.0

0.33

B4

1

1926

2P (Gold line)

Output triode

2.0*

0.20

-

-

6.0

0.82

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

4P (Gold line)

Output triode

4.0*

0.15

-

-

4.0

1.00

B4

1

1926

6P (Gold line)

Output triode

6.0*

0.20

-

-

3.0

1.00

B4

1

1926