MIL-PRF-1/1427G
TABLE I. Testing and inspection.
Inspection
Method
Notes
Conditions
Acceptance Symbol
Limits
Unit
MIL-STD-
Level
11/
Min
Max
1311
Conformance inspection,
part 1
A ac
78
73
If
0.65
---
1301
Filament current
Electrode voltage (grid)
1261
---
0.65
Ec1
-95
-127
V dc
Total grid current
1266
10/
0.65
Ic1
---
-20
µA dc
Electrode current (screen)
1256
---
0.65
Ic2
---
+15
mA dc
0.65
Isg1
---
-35
1266
---
Ic1 = 825 mA dc;
Primary grid emission
µA dc
t = 15;
(control)
Ef = 8.25 V ac;
anode and screen-
grid floating
0.65
Isg2
---
-100
Primary grid emission
1266
---
Ec1 = 0; t = 15;
µA dc
(screen)
Ic2 = 625 mA dc;
Ef = 8.25 V ac;
anode floating
0.65
is
53
---
a
Peak emission
1231
---
eb = ec1 = ec2
= 2.5 kv
Conformance inspection,
part 2
Cin
7/
108.0 122.0
1331
pF
Direct-interelectrode
Cout
pF
capacitance
18.0 23.0
---
Cgp
pF
(grounded cathode)
---
1.0
Cin
pF
58.0
48.0
1331
---
Direct-interelectrode
Cout
pF
24.0
19.0
capacitance
---
Cpk
pF
.16
---
(grounded grid)
egk
---
0
v
Current division
1372
---
Eb = Ec2 = 1,500 V dc;
ic2
---
1.25
a
(method B, short pulse)
Ec1 = -600 V dc;
---
egk/ib = 11a;
tp = 2 µs (min);
prr = 30 (min)
Ic1
mA dc
80
---
RF useful output power
2214
3/ 8/
F = 2 to 30 MHz;
Ic2
mA dc
375
---
Eb = 6.0 to 6.6 kV dc;
---
Po
kW
---
7.0
Ib = 2.0 A dc (max)
(useful)
Air:
SK-300: 165 cfm(max)
SK-300A: 190 cfm(max)
See footnotes at end of table.
2
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