MIL-PRF-1/1640E
TABLE I. Testing and inspection - Continued.
Method
Limits
Inspection
MIL-STD-1311
Notes
Test
Conditions
Symbol
Min
Max
Unit
Conformance
inspection, part 3
Life test
---
29/
---
Group D or S;
---
1,500
---
Cycles
VSWR = 1.5 (min),
1,250
---
Hours
cycled through λg
every 15 minutes
(approximately)
Life-test end points:
---
Power output
4250
---
2
Po
160
---
W
Mechanical tuning
4223
---
1
Upper limit
F
9,600
---
MHz
range
Lower limit
F
---
8,500
MHz
RF bandwidth
4308
1, 2
BW
---
2.5/tpc
MHz
17/
Minor lobe ratio
4308
1, 2
---
6
---
dB
---
Stability
4315
14/
1, 2
MP
---
0.5
%
Tuning characteristics
---
6/ 28/
2
F
---
15
MHz
T(body) = -55°C and
Operating torque
4223
6/
2
---
---
60
Inch-
150°C (max)
or force
ounce
T(body) = -55°C and
Mechanical tuning
4223
6/
2
150°C (max)
range
F
9,600
---
MHz
Upper limit
F
---
8,500
MHz
Lower limit
Variable-frequency
---
6/ 10/
2
ib = 27.5a; F3
---
---
---
---
vibration (1)
(operating)
ĆF
Frequency variations
---
6/ 24/
2
F2
---
1.0
MHz
6/ 11/
Stability
4315
2
F2
----
0.5
%
MP
Variable-frequency
---
6/ 9/ 26/
2
ib = 27.5a; F3
---
---
---
---
vibration (2)
(operating)
Fixed-frequency
---
6/ 26/
2
ib = 27.5a; F3;
---
---
---
---
vibration (operating)
F = 50; 10G;
t = 60 seconds;
3 planes
ĆF
Frequency change
4302
6/ 15/
2
F3
---
18
MHz
(warmup)
Tuning characteristics
---
6/ 28/
2
F
---
15
MHz
Mechanical tuning
4223
6/ 12/
---
No voltages applied
---
500
---
Cycles
fatigue
See footnotes at top of next page.
4
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