MIL-PRF-1/1385K
TABLE I. Testing and inspection - Continued.
Inspection
Method
Type
Conditions
Symbol
Limits
Unit
MIL-STD-1311
Min
Max
Conformance inspection,
part 2
Cgp
---
0.06
pF
Direct-interelectrode
Cin
16.0
18.5
pF
1331
Both
capacitance
Cout
4.2
5.2
pF
µA dc
Heater-cathode leakage
Ehk = +150 V dc;
1336
Both
Ihk
---
+150
Ehk = -150 V dc 10/
Ihk
---
-150
µA dc
RF useful output power
7580W Class C amplifier;
2214
Po
225
---
W
F = 470 to 500 MHz;
Eb = 2,000 V dc;
Ec1 = -90 V dc;
Ec2 = 250 to 300 V dc;
Ic1 = 25 mA dc (max);
Eg1/Ib = 250 mA dc;
Ef = 5.5 V ac 11/
Conformance inspection,
part 3
7580W Group C; AB1 amplifier;
Life test (2)
---
Po
250
---
W
Eb = 2,000 V dc;
(useful)
(initial)
Ec2 = 400 V dc;
Ec1/Ibo = 75 mA dc;
Eg1/Ib = 250 mA dc;
RL = 4,000 ± 100 ohms;
anode tank Q = 10 to 15;
F = 2 MHz (min),
10 MHz (max);
t = 500 hours 7/
Life-test (2) end points:
---
Linear amplifier power
7/
2204
3rd IM
-22
---
dB
output and distortion
5th IM
-27
---
dB
ĆIb
Life test (2)
7/
---
7580W
---
40
mA dc
225
---
W
Po
(useful)
---
7580W RF useful output power;
---
---
---
---
Life test (1)
t = 500 hours 4/
Life-test (1) end points:
---
Ćik
Pulse emission
Ef = 6.0 V ac
2212
---
100
ma
µA dc
Heater-cathode
Ehk = +150 V dc
1336
---
150
Ihk
µA dc
leakage
Ehk = -150 V dc
---
150
Ihk
1266
µA dc
Primary grid emission
---
-250
Isg1
(control)
1266
---
-250
µA dc
Isg2
Primary grid emission
(screen)
See footnotes at end of table.
3
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