MIL-PRF-1/1648C(NAVY)
TABLE I. Testing and inspection.
Sampling
Inspection
Limits
Inspection
Method
Notes
Conditions
plan
level
Symbol
Unit
or code
Min
Max
Conformance inspection,
part 1
Heater current
1301
---
0.65
II
If
9
11
A ac
Electrode voltage (grid)
1261
---
0.65
II
Ec1
-48
-62
V dc
Electrode current
1256
---
0.65
II
Ic2
0
-10
mA dc
(screen)
0.65
II
Isg1
---
-10
Primary grid emission
1266
9/
Ec1/Pg1 = 1.0 W;
A dc
(control)
p = g2 = k = 0 V dc;
Eavg (reverse)
= 25 V; t = 60
0.65
II
Isg2
---
-25
Primary grid emission
1266
9/
Ec2/Pg2 = 12 W;
A dc
(screen)
p = g1 = k = 0 V dc;
Eavg (reverse)
= 50 V; t = 60
0.65
II
Iz
---
10
Ion current
---
3/
Eb = -67.5 V dc;
A dc
Ec2 = 300 V dc;
Ec1/Ic2 = 20 mA dc
W
Linear amplifier power
2204
7/
Class AB amplifier;
---
1,000
---
---
Po
dB
---
output and distortion
Eb = 2,900 V dc;
-35
3rd IM
dB
---
-40
5th IM
Ec2 = 225 V dc;
Ec1/Ibo = 300 mA dc;
Eg1/Ib = 700 mA dc;
R = 2,200 100
ohms; Rg = 1,000
ohms (max); anode
loaded tank; Q = 10 to
15
Conformance inspection,
part 2
pF
0.03
1331
---
---
Direct-interelectrode
Cgp
pF
88.0
75.0
capacitance (grounded
Cin
---
---
pF
12.8
10.8
Cout
cathode connection)
Current division
1372
---
Eb = 500 V dc;
---
egk
20
v
Ec2 = 325 V dc;
ic1
---
mA
50
---
---
Ec1 = -200 V dc;
ic2
---
mA
300
egk/ib = 3.0 a
See footnotes at end of table.
2