MIL-PRF-1/1701C
22/
The receiver arm of the duplexer shall be terminated with type 1N78 crystal diodes mounted in a suitable holder and terminated in a
dc ground return of 100 ± 10 ohms. At the beginning of the life test, the crystal noise figure (NF) shall meet the minimum
requirements for the type 1N78 crystal under the standard, specified conditions. The initial crystal noise figure shall be recorded.
Dimensions
NOTES
Ltr
Inches
Millimeters
1. Exposed length of shutter post terminals (2) shall be
Min
Max
Min
Max
.090 inch (2.29 mm) minimum and shall be free of potting
Qualification inspection
and paint.
B
1.735
1.765
44.07
44.83
2. Outside surfaces, except mounting surfaces of flanges,
D
1.297
1.327
32.94
33.71
are to be painted using a gloss black epoxy enamel paint.
F
.035
.065
0.89
1.65
3. Markings to be stamped with white ink at locations shown
P
.090
---
2.29
---
in accordance with the requirements of MIL-STD-130.
4. Exhaust tube, tuning screws, and other elements not to
Conformance inspection, part 1
extend beyond flange outlines, except where shown.
E
No. 6-32 UNC-2B tap through 8 holes
5. Surface shall be insulated to withstand 50 V dc minimum
H
.350
---
8.89
---
when applied.
J
---
1.250
---
31.75
6. Shutters shall be sealed.
K
---
.125
---
3.18
L
.803
.805
20.40
20.45
N
---
.500
---
12.70
Conformance inspection, part 2
A
1.490
1.510
37.85
38.35
C
.951
.961
24.16
24.41
Reference dimensions
G
---
1.812
---
46.02
M
---
.093
---
2.36
FIGURE 5. Outline drawing of electron tube type DOD-004.
9