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

 Graham Farish

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

AC/DX

Detector triode

4.0

1.00

200

5.0

-

-

3.0

10.0

3.5

B5

1

1936

AC/HG

RF tetrode

4.0

1.00

200

4.5

80

0.5

1.5

800.0

3.50

B5+tc

2

1936

AC/HP

RF pentode

4.0

1.00

200

3.0

100

1.0

1.5

850.0

3.20

B7+tc

5

1936

AC/LP

AF triode

4.0

1.00

200

18.0

-

-

14.0

2.35

4.25

B5

1

1936

AC/PP

Output pentode

4.0

2.00

250

32.0

250

4.3

5.5

6.0

3.2

B7

24

1936

AC/PT

Output pentode

4.0

1.00

250

32.0

250

4.3

10.0

7.5

3.4

B7

24

1936

AC/SG

RF tetrode

4.0

1.00

200

2.4

80

0.3

1.5

225.0

3.30

B5+tc

2

1936

AC/VG

VM RF tetrode

4.0

1.00

200

5.0

80

0.7

0

400.0

3.00

B5+tc

2

1936

AC/VP

VM RF pentode

4.0

1.00

200

6.0

100

2.0

0

1M

3.00

B7+tc

5

1936

AC/VS

VM RF tetrode

4.0

1.00

200

14.6

80

1.6

0

450.0

3.30

B5+tc

2

1936

DX2

Detector triode

2.0*

0.10

150

3.5

-

-

3.0

12.0

1.40

B4

1

1935

HP2

RF pentode

2.0*

0.15

150

1.5

70

0.3

0

500.0

1.20

B7+tc

5

1935

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

LF2

AF triode

2.0*

0.10

150

2.5

-

-

6.0

7.5

1.60

B4

1

1935

LP2

Output triode

2.0*

0.15

150

8.0

-

-

12.0

3.6

2.20

10.0

0.15

B4

1

1935

MP2

Output triode

2.0*

0.20

150

12.5

-

-

12.0

2.3

3.00

5.0

0.25

B4

1

1935

PP2

Output pentode

2.0*

0.20

150

18.0

150

4.0

9.0

7.6

0.75

B5

6

1935

PT2

Output pentode

2.0*

0.20

150

10.0

150

1.8

4.5

12.0

0.5

B5

6

1935

QP2

Double output pentode

2.0*

0.40

150

8.0

150

1.2

18.0

14.5

1.4

B7

11

1935

SG2

RF tetrode

2.0*

0.15

150

2.0

80

0.75

0

250.0

1.00

B4+tc

2

1935

SGW2

RF tetrode

2.0*

0.20

150

2.25

80

0.6

0

330.0

1.50

B4+tc

2

1935

SX2

RF tetrode

2.0*

0.20

150

2.25

80

0.6

0

330.0

1.50

B4+tc

2

1935

VP2

VM RF pentode

2.0*

0.10

150

3.75

70

0.75

0

400.0

1.25

B7+tc

4

1935

VS2

VM RF tetrode

2.0*

0.10

150

6.0

75

1.5

0

110.0

1.00

B4+tc

2

1935

XP2

Output triode

2.0*

0.30

150

17.5

-

-

15.0

1850Ω

3.50

4.0

0.45

B4

A

1935

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

Rectifiers

Type

Class

Cathode

Va

DC Ia

PIV

DC Vo

Base

Year

Type

Volts

Amps

Max RMS

mA

Volts

Volts

Type

Ref

Year

 Graham Farish

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

UU60/250 (Hivac)

FW

IH

4.0

1.25

300

75

B4

14

1936

UU120/350 (Hivac)

FW

IH

4.0

2.50

350

120

B4

14

1936