Suggested Operating Conditions and Parameters

Class A Power amplifier of single tube (A-F)

Plate voltage
750
1000
1250
V
Grid voltage
-46
-61
-80
V
Load resistance
8.8
7.6
9.2
kohms
Plate current
34
53
60
mA
Signal voltage (pk)
41
56
75
V
Plate resistance
4.4
3.8
3.6
kohms
Output power
5.6
12
19.7
W

Class B Power amplifier of push-pull (A-F)

Plate voltage
1000
1250
V
Grid voltage
-72
-95
V
Load resistance
6.9
9
kohms
Plate current(0 single)
20
20
mA
Plate current(max single)
320
320
mA
Signal Voltage(pk)
380
410
V
Output power
200
260
W
Class B Power amplifier of single tube (modulate coefficient shall be 1) (R-F)

Plate voltage
1000
1250
V
Grid voltage
-72
-95
V
Plate current
130
106
mA
Signal Voltage(pk)
125
125
V
Output power
40
42
W
Grid current(approx)
5
1
mA
Grid power(input)(approx)
10
7.5
W

 

Class C power amplifier of single tube (max modulate coefficient shall be 1)

Plate voltage
750
1000
V
Grid voltage
-200
-260
V
Plate current
150
150
mA
Signal Voltage(pk)
350
410
V
Output power
65
100
W
Grid current (approx)
35
35
mA
Grid power (input)(approx)
12
14
W

Limiting Operation Conditions for Safe Nor simultaneous ratings

Class ClassA(A-F) A push-pull Class B(A-F) Class B(R-F) Class C
Max plate voltage 1250 1250 1250 1000 V
Max plate dissipation 75 100 100 67 W
Max plate current (max sig. Per tube) 175 150 175 mA
Max Grid current 50 mA
Max plate dissipation(in) 175 W
Max Grid voltage -400 V