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

 Aneloy

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

AP235

Bi-grid tetrode

2.0*

0.35

B4+st

28

1927

AP406

Bi-grid tetrode

4.0*

0.06

B4+st

28

1927

AP412HF

RF or RC bi-grid tetrode

4.0*

0.12

20-100

4-25

60.0

0.45

B4+st

28

1927

AP412LF

AF bi-grid tetrode

4.0*

0.12

20-50

10-15

11.0

0.68

B4+st

28

1927

AP412P

Output bi-grid tetrode

4.0*

0.12

40-100

10-20

4.9

1.10

B4+st

28

1927

AP412 RC

RCC bi-grid tetrode

4.0*

0.12

60

120.0

0.31

B4+st

28

1927

AP412 SG

RF bi-grid tetrode

4.0*

0.12

30-120

4-25

500.0

0.20

B4+st

28

1927

AP412U

Detector bi-grid tetrode

4.0*

0.12

B4+st

28

1927

AP425P

Output bi-grid tetrode

4.0*

0.25

40-100

10-25

2.4

1.24

B4+st

28

1927

B.E. (4V)

GP bi-grid tetrode

3.5*

0.55

50-100

B4+st

28

1927

B.E. (6V)

GP bi-grid tetrode

6.0*

0.50

B4+st 5-pin

28

1927

D.E.

GP bi-grid tetrode

4.0*

0.34

B4+st 5-pin

28

1927

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

D.E.06

GP bi-grid tetrode

4.0*

0.06

B4+st 5-pin

28

1927

D.E.4

GP bi-grid tetrode

4.0*

0.56

B4+st 5-pin

28

1927

D.E.34

GP bi-grid tetrode

4.0*

0.34

B4+st 5-pin

28

1927

H.F.

RF bi-grid tetrode

2.0*

0.34

20-30

B4+st

28

1927

H.F. & DET

RF or RC bi-grid tetrode

3.5*

0.06

20-25

B4+st

28

1927

L.F.

AF bi-grid tetrode

2.0*

0.34

20-40

B4+st

28

1927

L.S.680

Output bi-grid tetrode

6.0*

0.80

200

1.0

3.00

B4+st

28

1929