Dim € Inches € Millimeters

-

A
B
C
D
E
F

 Min

2.83
0.67
0.394
0.787
-
1.968

 Max

3.76
0.75
-
0.866
3.740
2.155

 Min

84.8
17
10
29
-
66.6

 Max

85.6
19
-
31
109
68.6

Typical Operation, Grid Driven, Single Tone

Frequency

Power output
DC plate voltage
DC screen voltage
Bias voltage1
Zero­signal plate current
DC plate current
DC screen current
DC grid current
Driving voltage
Driving power2
CW plate input power

 144

1500
2450
330
­52
500
1080
25
0
515
30
2646

 75

1600
2400
350
­53
500
1100
20
0
50
25
2640

 75 MHz

1500 W
2400 V
350 V
­70 V
200 mA
870 mA
48 mA
0 mA
88 V
77 W
2068 V

Intermodulation distortion:3

3rd order
5th order
Efficiency
Cathode resistance		 ­365
­585
57
0		 ­36
­58
61
0		 ­30 dB
­34 dB
72 %
24 ohms

Notes:
1. Approximate value, adjust to specified zero-signal plate current.
2. The driving power is determined by the 50-ohm resistive input circuit.
3. Intermodulation distortion measured by two-tone method referenced to one of two equal tones at 500 kHz.
4. Author¹s parameters.
5. Presumed, not measured (see text).