▼ Menu

Radio Valve Data: 1915-1960

Keith R Thrower OBE, The Valve Museum, April, 2022.
    
Extras ▼

PDF

 

Help information: Abbreviations - Explanations - Notes.

 

Triode Receiver Valves (pre-1926)*

Type or
Trademark
Filament
Anode
Grid
ra
gm
μ
Year
Base
Notes
and applications
(1)The letters indicate the three types of filaments found on these valves. B = bright emitter, D = dull emitter, O = oxide-coated.
Volts
Amps
Volts
-Volts
mA/V
 
(2)The year shown is when it is believed the type was first issued. This date is accurate for most types but cannot be guaranteed for them all.
(3)Pin-out details for non-exhibits can be found with the base details.
  This table lists valves that were manufactured in the UK or which were claimed to be of UK manufacture. In practice several of the smaller companies imported their valves from abroad.

Ediswan

A.R.
B
4.0
0.75
30-80
36.0
0.17
6.0
1922
B4
General purpose
A.R. (green line)
B
4.0
0.75
30-80
15.0
0.40
6.0
1925
B4
Detector/AF amp.
A.R. (red line)
B
4.0
0.75
30-80
30.0
0.33
10.0
1925
B4
RF amplifier
A.R.06
D
2.8-3.0
0.07
30-80
1.5
30.0
0.36
11.0
1923
B4
General purpose
A.R.06 (gn. line)
D
2.5-3.0
0.06
20-100
4.0
14.0
0.35
5.0
1924
B4
Detector/AF amp.
A.R.06 (red line)
D
2.5-3.0
0.06
20-100
1.5
35.0
0.29
10.0
1924
B4
RF amplifier
A.R.D.E.
D
1.8-2.0
0.30
20-50
1.0
27.0
0.30
9.0
1923
B4
General purpose
A.R.D.E. (gn. line)
D
1.8-2.0
0.30
20-100
4.0
15.0
0.35
5.0
1924
B4
Detector/AF amp.
A.R.D.E. (red line)
D
1.8-2.0
0.30
20-100
1.5
40.0
0.25
10.0
1924
B4
RF amplifier
E.S.1
B
4.0
0.75
20-100
25.0
0.30
7.5
1919Ω
B4
Similar to R
E.S.2
B
4.0
0.75
15-60
1920
B4
Both designed by
E.S.4
B
4.0
0.75
30-80
1920
B4
Scott-Taggart
P.V.1
B
6.0
1.50
300-600
20.0
0.55
11.0
1924
B4
Output
P.V.2
B
6.0
1.50
200-400
11.0
0.41
4.5
1924
B4
Output
P.V.3
B
4.0
0.70
70-110
25.0
0.20
5.0
1924
B4
Output
P.V.5 D.E.
D
5.0
0.25
50-150
4.0
6.0
1.00
6.0
1924
B4
Output
P.V.6 D.E.
D
1.8-2.0
0.50
60-120
6.0
10.0
0.60
6.0
1925
B4
Output
P.V.8 D.E.
D
3.0
0.12
60-120
7.0
10.5
0.58
6.0
1925
B4
Output

Post-1925 amplifying valves, frequency changers
and signal diodes

Type
Description
Filament
Anode
Auxillary Grid
Grid
ra
gm/go
RL
Po
Rk
Base (1)Pin-out details for non-exhibits can be found with the base details.
Year
 
 
Volts
Amps
Volts
mA
Volts
mA
-V
mA/V
Watts
Ω
Type
Ref
 

 Ediswan

 Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
5E.225
Output pentode
2.0*
0.25
150
6.0
120
-
7.5
1.00
B4+st
21
1928
5E.255
Output pentode
2.0
0.20
150
9.5
150
-
4.5
74.0
2.5
15.0
0.60
B5
6
5E.415
Output pentode
4.0*
0.25
300
20.0
200
4.5
25.0
1.05
1.70
15.0
2.75
B4+st
B5
21
6
1928
B.T.S.215
See BTH type B.S.215
2.0*
0.15
-
-
B4
1
1927
D.R.2
Detector or AF triode
2.0*
0.10
40-80
-
-
27.0
0.30
B4
1
1926
E.S.60
Output triode
6.0*
4.00
500
80.0
-
-
110.0
1.2
4.00
L4
1
E.S.75
Output triode
10.0*
4.20
1000
75.0
-
-
150.0
2.1
2.40
15.0
B4F
2
1930
E.S.75H
Output triode
10.0*
4.20
1000
75.0
-
-
150.0
3.2
3.40
15.0
B4F
2
E.S.100
Output triode
6.0*
3.00
1000
-
-
1.75
7.0
30.0
L4
1
1936
E.S.220
Detector triode & AF triode
2.0*
0.20
60-90
120-150
-
-
280.0
50.0
0.14
0.20
6-pin
1927
G.P.2
General-purpose triode
2.0*
0.10
60-120
-
-
2.0
16.5
0.60
B4
1
1926
G.P.4
General-purpose triode
4.0*
0.15
60-120
-
-
1-2
22.0
0.55
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
H.F.210
RF or detector triode
2.0*
0.10
120
-
-
25.0
0.80
B4
1
1928
H.F.410
RF or detector triode
4.0*
0.10
120
-
-
22.0
1.10
B4
1
1928
H.F.607
RF or detector triode
6.0*
0.07
120
-
-
B4
1
1928
H.F.610
RF or detector triode
6.0*
0.10
120
-
-
21.0
1.20
B4
1
1928
L.F.210
AF triode
2.0*
0.10
120
-
-
13.0
1.00
B4
1
1928
L.F.410
AF triode
4.0*
0.10
120
-
-
10.5
1.20
B4
1
1928
L.F.410A
AF or output triode
4.0*
0.10
120
-
-
4.5
2.00
B4
1
1928
L.F.610
AF triode
6.0*
0.10
120
-
-
0.0
1.50
B4
1
1928
MI.41
RF triode
4.0
1.00
-
-
9.0
1.75
B4+2tt
22
1928
MI.41 HF
RF triode
4.0
1.00
-
-
9.0
1.75
B4+2tt
22
1928
MI.41 LF
AF triode
4.0
1.00
-
-
B4+2tt
22
1928
MI.41 RC
RCC triode
4.0
1.00
-
-
50.0
0.90
B4+2tt
22
1928
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
P.V.2 (DE)
Output triode
2.0*
0.15
80-120
-
-
4.5
9.0
0.66
B4
1
1926
P.V.2 (Oxide)
Output triode
2.0*
0.15
60-140
-
-
6-12
6.0
0.70
B4
1
1928
P.V.4 D.E.
Output triode
4.0*
0.35
60-120
-
-
3-10
9.5
0.65
B4
1
1926
P.V.215
Output triode
2.0*
0.15
120
-
-
6.6
1.20
B4
1
1928
P.V.225
Output triode
2.0*
0.25
120
-
-
2.7
1.10
B4
1
1928
P.V.410
Output triode
4.0*
0.10
120
-
-
5.5
1.00
B4
1
1928
P.V.425
Output triode
4.0*
0.25
120
-
-
2.0
1.50
B4
1
1928
P.V.610
Output triode
6.0*
0.10
90
-
-
4.2
1.20
B4
1
1928
P.V.625
Output triode
6.0*
0.25
150
-
-
3.0
1.00
B4
1
1928
P.V.625A
Output triode
6.0*
0.25
200
-
-
1.1
3.60
B4
1
1928
P.V.625X
Output triode
6.0*
0.25
200
20.0
-
-
15.0
2.0
3.50
B4
1
1928
R.C.2
RCC triode
2.0*
0.10
120
-
-
150.0
0.20
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
R.C.210
RCC triode
2.0*
0.10
120
-
-
67.0
0.60
B4
1
1928
R.C.410
RCC triode
4.0*
0.10
120
-
-
61.0
0.65
B4
1
1927
R.C.610
RCC triode
6.0*
0.10
120
-
-
50.0
0.80
B4
1
1927
S.G.215
RF tetrode
2.0*
0.15
150
75-120
140.0
1.00
B4+tc
2
1928
S.G.410
RF tetrode
4.0*
0.15
150
115.0
1.20
B4+tc
2
1928
S.G.610
RF tetrode
6.0*
0.15
150
100.0
1.40
B4+tc
2
1928
V1505†
Output triode
Class AB1 PP
14.0*
6.50

2000

360.0
- 
- 

125.0
7.50

10.0

 300
USL4b
-

† See British Radio Valves. The Classic Years: 1926-1946, p. 19.

† Later supplied by GEC (push-pull data from 1957 GEC Circuit Supplement).

Rectifiers

Type
Class
Cathode
Va
DC Ia
PIV
DC Vo
Base
Year
 
 
Type
Volts
Amps
Max RMS
mA
Volts
Volts
Type
Ref
Year

 Ediswan

 Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
C.R.1
HW
DH
6.0
2.00
5000
B4
4
1932
C.R.2
HW
DH
4.0
0.40
250
30
B4
4
U.222 (Eliminator)
FW
DH
2.0
2.20
125
30
B4
5
1928
U235 (Batt. Charger)
FW
1928
U600
FW
DH
2.0
8.0
6000
30

Thyratrons

Type
Heater
Anode
Control
fmax
Gas
Base
Year
 
Volts
Amps
Pk Volts
Pk mA
Ratio
KHz
 
Type
Ref
Year

 Ediswan

 Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
HE/AC.1
4.0
1.20
150
150
20
Helium
B5
1
1935
MR/AC.1
4.0
1.20
150
150
20
Mercury
B5
A
1932

Use browser back button to return.
rvd-011